Construction Material Testing

Concrete Mix Design (M10 to M75)

Optimised concrete mix proportioning for every grade from M10 to M75 per IS 10262:2019

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IS 10262:2019 IS 456:2000 IS 516:1959

How is concrete mix design done (IS 10262)?

Concrete mix design proportions cement, water, fine and coarse aggregate to achieve a target strength and workability at minimum cost. It follows IS 10262:2019 together with the durability requirements of IS 456, and is confirmed by trial mixes and 28-day cube strength. NKMPV prepares concrete mix designs (M10–M60+) as a NABL-accredited laboratory.

Concrete mix design is the process of determining the optimum proportions of cement, water, coarse aggregate, fine aggregate, and admixtures to produce concrete of a specified grade, workability, and durability. In India, mix design is carried out as per IS 10262:2019 and verified through trial batch testing and 28-day cube compressive strength.

What Is Concrete Mix Design (IS 10262:2019)?

Reviewed by NKMPV Technical Editorial Team, NABL Assessor, IS/IRC-Code Certified Engineers  ·  Last reviewed:

Concrete mix design translates structural design requirements into a practical recipe that can be batched at a ready-mix plant or site mixer. The process begins with the target mean strength — calculated by adding a margin (1.65 times the standard deviation) to the characteristic strength — and works backward through water-cement ratio selection, cement content, aggregate proportioning, and workability adjustment to arrive at batch weights per cubic metre. A properly designed mix balances strength, durability, workability, and economy. Under-designed concrete risks structural failure; over-designed mixes waste cement and increase cost. IS 456:2000 mandates that all concrete of grade M20 and above shall be designed using the mix design procedure rather than nominal proportions. For government infrastructure projects, NHAI and state PWD contracts require NABL-accredited mix design reports before any concreting is permitted. NKMPV performs concrete mix design for grades ranging from M10 (lean concrete for levelling courses) through M75 (high-performance concrete for pre-stressed elements). Every mix design includes laboratory trial batches with cube casting and compressive strength testing at 7 and 28 days. We test the constituent materials — cement and aggregates — as part of the mix design process to ensure the proportions are based on actual material properties, not assumed values. The laboratory serves RMC plants, infrastructure projects, and consulting engineers across Punjab, Haryana, and Himachal Pradesh.

Mix Design Parameters & Target Values

The following parameters define the concrete mix design output. Target values depend on the specified concrete grade, exposure condition, and workability requirement. Representative values for common grades are shown below.

Parameter Value / Range Unit Standard
Target Mean Strength (M20) 26.6 MPa (fck + 1.65 x s) MPa IS 456:2000 Table 11
Target Mean Strength (M30) 38.25 MPa MPa IS 456:2000 Table 11
Target Mean Strength (M40) 48.25 MPa MPa IS 456:2000 Table 11
Water-Cement Ratio (Maximum) 0.50 (Moderate exposure), 0.45 (Severe), 0.40 (Very Severe) IS 456:2000 Table 5
Minimum Cement Content 300 kg/m³ (Moderate), 320 kg/m³ (Severe), 340 kg/m³ (Very Severe) kg/m³ IS 456:2000 Table 5
Maximum Cement Content 450 kg/m³ kg/m³ IS 456:2000 Cl. 8.2.4.2
Workability (Slump) 25-50 mm (low), 50-100 mm (medium), 100-150 mm (high) mm IS 456:2000 Table 7
Coarse-to-Fine Aggregate Ratio Determined from IS 10262:2019 Table 3 based on MSA and Zone of sand IS 10262:2019 Cl. 4.4
Maximum Size of Aggregate (MSA) 10 mm, 20 mm, or 40 mm (project-specific) mm IS 456:2000 Cl. 8.2.4.4
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Applicable Indian Standards

IS 10262:2019

Concrete Mix Proportioning — Guidelines

IS 456:2000

Plain and Reinforced Concrete — Code of Practice

IS 516:1959

Methods of Tests for Strength of Concrete

IS 1199:1959

Methods of Sampling and Analysis of Concrete

IS 383:2016

Coarse and Fine Aggregate for Concrete — Specification

IS 9103:1999

Concrete Admixtures — Specification

Equipment Used

Compression Testing Machine (CTM)

AIMIL AIM-302-E

2000 kN capacity with digital load indicator and pace rate control as per IS 516

Calibrated

Concrete Cube Moulds (150 mm)

Standard IS pattern (cast iron)

150 mm x 150 mm x 150 mm three-gang moulds, set of 24 for simultaneous trial batches

Calibrated

Laboratory Concrete Mixer

Controls tilting drum mixer

40-litre capacity, suitable for trial batch volumes of 25-35 litres per IS 10262 requirements

Calibrated

Slump Cone Apparatus

Standard IS slump cone (300 mm height)

Truncated cone with tamping rod, base plate, and measuring scale per IS 1199

Calibrated

Weighing Balance (Material Batching)

AIMIL platform balance

50 kg capacity, least count 1 g for cement and water; 100 kg capacity, least count 5 g for aggregates

Calibrated

Curing Tank

AIMIL thermostatically controlled

Maintains 27 ± 2°C, accommodates 200+ cubes simultaneously with continuous water circulation and temperature logging

Calibrated

Sieve Analysis Equipment

EIE sieve shaker with IS sieves

Full IS 383 sieve set (80 mm to 150 micron) for coarse and fine aggregate grading analysis

Calibrated

Mix Design Process

1

Material Collection & Testing

Days 1-3

Representative samples of cement (5 kg), coarse aggregate (30 kg, all size fractions), fine aggregate (20 kg), water, and admixture (if specified) are collected from the actual project sources. The cement is tested for compressive strength, specific gravity, and consistency per IS 4031. Aggregates are tested for sieve analysis (IS 2386 Part 1), specific gravity, water absorption, and moisture content per IS 2386 Part 3. The fineness modulus of sand and the grading zone are determined. These material properties are the foundation of the mix design calculation.

2

Mix Proportioning Calculation

Day 3 (2-3 hours)

The target mean strength is calculated from the characteristic strength (fck) by adding a current standard deviation margin per IS 456 Table 11. The water-cement ratio is selected from the IS 10262:2019 strength-versus-W/C relationship curve, then checked against the maximum permissible W/C for the specified exposure condition per IS 456 Table 5. Water content is estimated from IS 10262 Table 2 based on the maximum size of aggregate and desired slump. Cement content is derived from the W/C ratio. The aggregate volumes are calculated using the absolute volume method, with the coarse-to-fine ratio selected from IS 10262 Table 3. Admixture dosage (if used) is determined per manufacturer data and IS 9103.

3

Trial Batch Mixing

Day 4 (2-3 hours)

A laboratory trial batch of approximately 30 litres is prepared using the calculated proportions. Materials are weighed to ± 0.5% accuracy and mixed in the laboratory drum mixer for a minimum of 2 minutes. The fresh concrete is tested for slump using the slump cone apparatus per IS 1199. If the slump is outside the specified range, water content or admixture dosage is adjusted and a second trial is performed. The air content and fresh density are also recorded.

4

Cube Casting & Curing

Day 4 (casting), Day 5 (demoulding)

From each accepted trial batch, a minimum of 9 cubes (150 mm) are cast — three for 7-day testing and six for 28-day testing (three primary + three reserve). The cubes are compacted using a vibrating table or tamping rod as per IS 516, covered with wet hessian, and stored at 27 ± 2°C for 24 hours. After demoulding, cubes are transferred to the curing tank maintained at 27 ± 2°C. Each cube is marked with the mix reference, date of casting, and test age.

5

Compressive Strength Testing at 7 Days

Day 11

At 7 days after casting, three cubes are removed from the curing tank, surface-dried, weighed, and tested in the compression testing machine at a loading rate of 14 N/mm² per minute as per IS 516. The 7-day strength provides an early indicator of whether the mix proportions will achieve the 28-day target. Typically, 7-day strength is 65-75% of 28-day strength for OPC mixes. If 7-day results are significantly below expectation, the mix is revised and a fresh trial batch is prepared.

6

Compressive Strength Testing at 28 Days

Day 32

At 28 days, three primary cubes are tested under identical conditions. The average 28-day compressive strength must equal or exceed the target mean strength calculated in Step 2. If the result meets the target, the mix design is validated. If not, the proportions are adjusted (typically by reducing the W/C ratio or increasing cement content) and a second round of trial batches is prepared. For high-performance grades (M50 and above), additional trial iterations with admixture optimisation may be required.

7

Mix Design Report Issuance

Days 33-35

The final mix design report includes the detailed calculation sheet per IS 10262:2019, material test results (cement strength, aggregate grading, specific gravities, water absorption), batch weights per cubic metre, water-cement ratio, trial batch slump records, and 7-day and 28-day cube compressive strength data. The report is issued under NABL accreditation with a unique certificate number. It specifies the exact material sources, so any change in cement brand or aggregate quarry requires a new mix design.

Where This Service Is Used

Concrete mix design is required for every structural concrete application in India where the grade is M20 or above. NHAI highway projects, state PWD bridges, and municipal building works all mandate NABL-accredited mix design reports before concreting begins. RMC plants need mix designs for their entire product range — from M10 lean concrete to M60 high-performance grades. The mix design process depends on accurate material characterisation, which is why NKMPV performs cement testing and aggregate testing as integral parts of every engagement. After the mix is approved, ongoing quality is monitored through concrete cube testing at the project site to confirm that site-batched concrete achieves the designed strength.
RMC plant product development and grade range establishment Highway bridge and flyover structural concrete per NHAI specifications Dam, barrage, and canal lining concrete mix design per CWC norms High-rise residential and commercial building foundation and superstructure concrete Pre-stressed and post-tensioned concrete member mix design (M40-M75) Airport runway rigid pavement concrete design per DGCA requirements Railway bridge and station building concrete per RDSO specifications Mass concrete for piers, abutments, and retaining walls with low heat of hydration requirements

Detailed Information

Concrete Mix Design (M-10 to M-75)

Introduction

Concrete mix design is a vital process in civil engineering that determines the proportions of various components in concrete to achieve desired strength, workability, and durability. It ensures the economic utilization of materials and meets specific structural requirements. This report details the essential parameters and tests conducted for designing concrete mixes ranging from M-10 to M-75 grade. Relevant IS codes, including IS 10262:2019 and IS 456:2000, are referenced throughout. The report delves into gradation, specific gravity, chemical admixtures, water absorption, and moisture content, presenting a comprehensive overview. Concrete mix grades such as M-10 to M-75 cater to different structural needs, from plain concrete in pavements and foundations to high-strength concrete used in skyscrapers and bridges. Each grade has specific design requirements, making the testing and quality control processes critical.

Purpose of Testing

The primary objectives of concrete mix design testing are as follows:
  1. Ensure Optimal Mix Design: Achieve the target strength while maintaining durability and workability, ensuring the mix is fit for the intended purpose.
  2. Material Efficiency: Minimize waste and optimize the use of raw materials to reduce costs and environmental impact.
  3. Compliance with Standards: Ensure the mix design adheres to IS code specifications, guaranteeing uniformity and safety.
  4. Quality Assurance: Validate the physical and chemical properties of constituents to avoid deviations that could compromise the structure.
  5. Enhanced Sustainability: Promote the use of supplementary cementitious materials and recycled aggregates for a more sustainable approach.

Benefits of Testing

Concrete mix design testing offers several benefits:
  1. Improved Structural Performance: Ensures the concrete meets the required load-bearing capacity and other structural parameters.
  2. Enhanced Durability: Increases resistance to environmental factors such as freeze-thaw cycles, chloride attack, and carbonation.
  3. Cost Efficiency: Optimizes material usage, leading to significant cost savings.
  4. Environmental Impact Reduction: Promotes the use of supplementary materials and minimizes resource wastage.
  5. Predictable Behavior: Enables designers and engineers to anticipate how the mix will perform under various conditions, minimizing construction risks.

Gradation of Coarse and Fine Aggregates

Description

Gradation determines the particle size distribution of aggregates. Proper gradation ensures a dense and workable mix with minimal voids, directly impacting the strength, workability, and durability of concrete. Fine aggregates primarily consist of sand, while coarse aggregates are larger, such as gravel or crushed stone. Both must meet the standards specified in IS 383:2016.

Test Procedure

  1. Fine Aggregate (IS 383:2016):
  • Conduct sieve analysis using standard sieves (4.75 mm to 150 microns).
  • Categorize the aggregate into zones (Zone I to IV) based on the fineness modulus.
  • Ensure compliance with grading limits specified in IS 383:2016.
  • Completion Time: 1-2 days.
    1. Coarse Aggregate (IS 2386: Part I):
  • Perform sieve analysis to determine the distribution of particle sizes.
  • Confirm adherence to grading requirements for different nominal sizes (e.g., 10 mm, 20 mm).
  • Completion Time: 1-2 days.

Purpose of Testing

  1. Reduce void content in concrete for enhanced strength and workability.
  2. Achieve a well-graded mix for optimal packing density.
  3. Prevent segregation and bleeding during mixing and placement.

Benefits

  • Improved cohesion and reduced water demand.
  • Better compaction, minimizing permeability.
  • Enhanced durability and strength.

Practical Implications

  • For low-grade mixes like M-10, a slightly coarser gradation may suffice, reducing cost.
  • For high-grade mixes like M-75, precise gradation control is crucial to meet stringent performance criteria.

Specific Gravity of Cement

Description

Specific gravity is the ratio of the density of cement to the density of water. It plays a critical role in mix design calculations, influencing the absolute volume of cement in the mix. The typical specific gravity of Ordinary Portland Cement (OPC) is around 3.15, while blended cements may vary.

Test Procedure (IS 4031: Part 11)

Specific gravity tests for cement are critical across all grades of concrete. For lower grades like M-10 and M-15, minor deviations in specific gravity may not drastically affect the mix design, as these grades are generally used in non-structural elements. However, for higher grades such as M-40 to M-75, precise specific gravity values are essential to ensure the correct calculation of mix proportions, particularly the water-cement ratio, which directly impacts strength and durability. This test follows the IS 4031: Part 11 standard and involves the use of a Le Chatelier Flask. The procedure includes:
  1. Partially filling the flask with kerosene, ensuring no air bubbles are trapped.
  2. Recording the initial volume of kerosene.
  3. Adding a known weight of cement (typically 64 grams) into the flask.
  4. Measuring the final volume of the kerosene after cement displacement.
  5. Calculating specific gravity using the formula:
For practical applications, this test can typically be completed within a single working day. Consistent monitoring is recommended, especially for projects requiring high-strength concrete, where variations in specific gravity can alter the structural performance and mix uniformity.

Implications for Different Grades

  • M-10 to M-25: Specific gravity values are used for basic volume calculations but are less critical due to the relatively low performance demands.
  • M-30 to M-75: Accurate specific gravity is pivotal. Any deviations can lead to discrepancies in the mix, particularly in high-performance concrete, where small errors in water-cement ratios significantly affect strength and durability.

Practical Insights

In a recent high-rise project utilizing M-60 grade concrete, inconsistent specific gravity values in cement resulted in over 5% strength reduction during initial trials. Correcting this discrepancy by recalibrating cement-specific gravity ensured the mix met design specifications. This highlights the importance of rigorous adherence to test standards for high-grade concrete.
  1. Use a Le Chatelier Flask filled partially with kerosene.
  2. Measure the initial volume of kerosene.
  3. Add a known weight of cement and measure the new volume.
  4. Calculate specific gravity using:
  • Completion Time: 1 day.

Purpose of Testing

  1. Determine the density of cement to facilitate accurate mix design.
  2. Verify consistency in cement quality across batches.

Benefits

  • Precise determination of water-cement ratio.
  • Enhanced control over mix proportions.
  • Improved quality control during construction.

Practical Applications

  • Accurate specific gravity measurements are critical for high-strength concrete (M-40 to M-75), where precise volume calculations are essential.

Specific Gravity of Coarse and Fine Aggregates

Description

This parameter indicates the relative density of aggregates compared to water. It significantly impacts the volume calculations in concrete mix design.

Test Procedure (IS 2386: Part III)

  1. Fine Aggregates:
  • Use the pycnometer method.
  • Determine the mass of dry aggregates, the mass of the aggregates filled with water, and calculate the specific gravity.
  • Completion Time: 1-2 days.
    1. Coarse Aggregates:
  • Use the wire basket method.
  • Immerse aggregates in water, surface dry them, and measure their weights.
  • Completion Time: 1-2 days.
    1. Calculate specific gravity using:

Purpose of Testing

  1. Aid in mix design calculations by understanding the density of aggregates.
  2. Ensure the aggregates meet the required specifications for structural applications.

Benefits

  • Consistency in material properties.
  • Better understanding of aggregate absorption characteristics.
  • Enhanced mix design accuracy.

Case Study

In a project requiring M-60 concrete, deviations in specific gravity led to inconsistencies in workability. After recalibration, the mix achieved uniform properties, demonstrating the importance of precise testing.

Chemical Admixtures

Description

Chemical admixtures are substances added to concrete to alter its properties, such as setting time, workability, and strength, for specific project requirements.

Common Admixtures (IS 9103:1999)

  1. Water Reducers (Plasticizers): Reduce water content without affecting workability.
  2. Superplasticizers: Enhance workability and allow significant water reduction.
  3. Retarders and Accelerators: Control setting time for different environmental conditions.
  4. Air-Entraining Agents: Improve freeze-thaw resistance.

Test Procedure

  1. Evaluate compatibility with cement and aggregates.
  2. Conduct tests for dosage optimization.
  3. Assess the impact on concrete properties like workability, strength, and durability.
  4. Ensure compliance with IS 9103:1999 standards.
  • Completion Time: 3-5 days.

Purpose of Testing

  1. Optimize the performance of concrete for various conditions.
  2. Achieve specific properties, such as high early strength or reduced permeability.
  3. Enhance the durability of concrete structures.

Benefits

  • Improved handling and placement.
  • Enhanced performance in extreme environments.
  • Cost-effective solutions for high-performance concrete.

Application Examples

  • Superplasticizers are widely used in high-rise constructions requiring M-50 and above to achieve pumpable and workable concrete.
  • Air-entraining agents are critical for pavement projects in cold regions.

Water Absorption of Coarse and Fine Aggregates

Description

Water absorption measures the amount of water an aggregate can absorb. This property directly influences the water-cement ratio and overall mix proportions.

Test Procedure (IS 2386: Part III)

  1. Soak the aggregates in water for 24 hours.
  2. Surface dry the aggregates to remove excess water.
  3. Weigh the aggregates and calculate water absorption using:
  • Completion Time: 2-3 days.

Purpose of Testing

  1. Determine adjustments needed for the water content in the mix design.
  2. Ensure uniformity in concrete production by accounting for aggregate absorption.

Benefits

  • Accurate water-cement ratio adjustments.
  • Prevention of over-saturation or under-saturation of the mix.
  • Consistent workability and strength.

Practical Note

High water absorption in aggregates used for M-10 and M-15 mixes can lead to segregation, necessitating additional water corrections. On-site, this correction is typically implemented by conducting real-time water absorption tests using portable drying equipment and weighing scales. The aggregates are soaked in water for a specified duration, followed by surface drying to remove excess moisture. The wet and dry weights are recorded, and adjustments are made to the water content of the concrete mix accordingly. Modern tools such as moisture probes and aggregate heating pans are often used to expedite this process, especially in large-scale construction projects. For example, in a batching plant, moisture meters installed in aggregate bins can continuously monitor the water absorption levels, enabling automatic adjustments to the mix design. This ensures consistency and prevents the mix from becoming overly wet or dry, which is critical for achieving uniformity in strength and workability.

Moisture Content of Coarse and Fine Aggregates

Description

Moisture content quantifies the amount of water present in aggregates. It affects the total water requirement of the mix and indirectly impacts workability and strength.

Test Procedure (IS 2386: Part III)

  1. Collect a representative sample of aggregates.
  2. Weigh the sample before drying.
  3. Dry the sample in an oven at 110°C until constant weight is achieved.
  4. Calculate moisture content using:
  • Completion Time: 1-2 days.

Purpose of Testing

  1. Adjust the water content in the mix design for consistent quality.
  2. Account for the effect of moisture on aggregate weight.

Benefits

  • Accurate water adjustments prevent variability in workability and strength.
  • Avoidance of issues like segregation and bleeding.
  • Improved consistency in mix properties.

Implications

  • In high-strength mixes like M-75, even minor moisture content deviations can lead to significant strength loss, emphasizing the importance of real-time monitoring.

Conclusion

The concrete mix design for grades M-10 to M-75 involves meticulous testing and adherence to IS codes to ensure optimal performance, durability, and cost-efficiency. Testing durations vary depending on the property being assessed. Gradation analysis and specific gravity tests typically take 1-2 days each, while water absorption and moisture content tests require 2-3 days. Chemical admixture evaluations, being more comprehensive, can extend up to 3-5 days to account for compatibility and performance assessments. For low-grade concretes like M-10 and M-15, the overall testing process can be completed in approximately 7-10 days, as these require fewer stringent checks. On the other hand, higher grades like M-50 to M-75 demand rigorous quality assurance and precise calibration of mix components, which may extend testing durations to 10-15 days. Through proper testing and precise calculations, the structural integrity and longevity of concrete structures can be significantly enhanced. This systematic approach ensures that every grade of concrete meets its intended performance criteria, whether for simple foundations or complex, high-strength applications in skyscrapers and bridges. By adhering to these practices, modern construction achieves both safety and sustainability. Gradation, specific gravity, admixture compatibility, water absorption, and moisture content tests are essential to achieving the desired properties of concrete. Through proper testing and precise calculations, the structural integrity and longevity of concrete structures can be significantly enhanced, making it possible to meet the demanding requirements of modern construction projects. By tailoring the mix to specific needs, such as high workability for complex structures or high durability for marine environments, engineers can deliver sustainable and cost-effective solutions for diverse construction challenges. Additional innovations, such as the use of nano-materials and advanced admixtures, continue to push the boundaries of performance and sustainability in concrete design.

Why Choose NKMPV for Concrete Mix Design?

Reports from a NABL-Accredited Lab

Our mix design reports carry NABL accreditation under ISO/IEC 17025:2017, meeting the documentation requirements of NHAI, state PWDs, CPWD, railways, and municipal corporations. No additional validation or re-testing needed.

Integrated Material Testing

Unlike labs that design mixes based on assumed material properties, NKMPV tests the actual cement and aggregates from your project sources as part of every mix design. This ensures the proportions are calibrated to real material characteristics, not textbook values.

Full Grade Range Capability

We design mixes from M10 (lean concrete) through M75 (high-performance concrete), including mixes with fly ash, GGBS, silica fume, and chemical admixtures. Our 2000 kN CTM handles the high-strength cube testing that M50+ grades demand.

200+ Cube Curing Capacity

Our thermostatically controlled curing tank accommodates over 200 cubes simultaneously, allowing us to run multiple trial batches and grade variations in parallel — essential for RMC plants establishing their full product range.

Post-Design Support

After delivering the mix design, we remain available for ongoing cube testing, field adjustment guidance, and mix revision if material sources change. We support projects across Punjab, Haryana, and Himachal Pradesh with site visits and sample collection.

Frequently Asked Questions

Concrete mix design in India is carried out as per IS 10262:2019, titled 'Concrete Mix Proportioning — Guidelines'. This standard was revised in 2019 to include provisions for self-compacting concrete, high-strength concrete up to M75, and mixes with mineral admixtures. The companion code IS 456:2000 specifies the durability requirements (exposure conditions, minimum cement content, maximum W/C ratio) that constrain the mix design. Cube strength testing follows IS 516.
A complete concrete mix design takes 30-35 days because the 28-day cube compressive strength is the final validation criterion. The initial 3-4 days are spent testing materials and calculating proportions. Trial batches are mixed on day 4, 7-day cube results come on day 11, and the governing 28-day strength is available on day 32. The final report is issued by day 35. If the first trial batch fails to meet target strength, an additional 28-day cycle is needed for the revised mix.
For M25 concrete under moderate exposure conditions, the water-cement ratio is typically 0.44-0.48 when using OPC 43 grade cement, as derived from the IS 10262:2019 strength-versus-W/C relationship. However, IS 456 Table 5 limits the maximum W/C to 0.50 for moderate exposure. The exact W/C ratio depends on the actual 28-day compressive strength of the cement being used — stronger cement allows a higher W/C for the same target strength, reducing cement consumption.
A nominal mix uses fixed volume proportions (e.g., 1:1.5:3 for M20) without considering actual material properties, and is permitted only for grades up to M20 per IS 456:2000 Cl. 9.1.1. A design mix (IS 10262) calculates proportions based on the tested properties of the specific cement, aggregates, and water to be used, optimising for target strength, workability, and durability. Design mix is mandatory for M20 and above on all government projects and yields more economical and reliable concrete.
You need to submit approximately 5 kg of cement, 30 kg of each coarse aggregate fraction (e.g., 20 mm and 10 mm), 20 kg of fine aggregate (sand), a sample of the project water, and the admixture brand/type if one will be used. All materials must be from the actual sources that will supply the project. Any change in cement brand, aggregate quarry, or sand source after the mix is approved will require a fresh mix design with the new materials.
Yes. IS 10262:2019 explicitly covers mix design with mineral admixtures including fly ash (IS 3812 Part 1), GGBS (IS 16714), and silica fume (IS 15388). Fly ash can replace 15-35% of cement depending on the exposure condition and grade, while GGBS replacement can go up to 50-70%. NKMPV designs mixes with these supplementary cementitious materials, which reduce heat of hydration, improve long-term durability, and lower the carbon footprint and cost of concrete.

IS 10262:2019 — "Guidelines for Concrete Mix Proportioning" — is the Indian Standard for designing concrete mixes from M10 to M80. The procedure produces the target mean strength (target = characteristic strength + 1.65 × standard deviation), then calculates the water-cement ratio from grade-strength correlation, the water content from slump requirement and aggregate size, and the cement content from w/c and water content. Aggregate proportions are calculated by absolute volume method using specific gravities. Trial mixes are tested to verify workability, density, and 7/28-day strength. The revised 2019 edition allows design of self-compacting concrete (SCC), high-strength concrete (M60+), and fly-ash / slag-blended cement mixes within the same framework. NKMPV delivers full IS 10262 mix designs with three trial-mix verification in 10–14 working days.

Per IS 456:2000 Table 5 minimum cement content for nominal mix exposure conditions: Mild exposure: 300 kg/m³ minimum for M20. Moderate: 300 kg/m³ for M25, 320 kg/m³ for M30. Severe: 320 kg/m³ for M30, 340 kg/m³ for M35. Very severe: 340 kg/m³ for M35, 360 kg/m³ for M40. Extreme: 360 kg/m³ for M40+. Maximum cement content is capped at 450 kg/m³ to prevent shrinkage cracking. Mix design must produce a w/c ratio consistent with both minimum cement and the strength-grade requirement — for high-grade concrete in extreme exposure, this typically means using mineral admixtures (fly ash, GGBS, silica fume) to enhance durability without increasing OPC content beyond 450 kg/m³.

A complete IS 10262 concrete mix design takes 10–14 working days from receipt of materials. Days 1–3: Receive cement, aggregate, water samples; perform IS 4031 cement tests, IS 2386 aggregate tests (specific gravity, water absorption, sieve analysis, impact value), water analysis (IS 456 Annex B). Days 4–5: Calculate trial-mix proportions per IS 10262 procedure (target strength → w/c → water → cement → aggregates by absolute volume). Day 6: Cast three trial mixes (typical w/c −0.02, design, +0.02) — 9 cubes per trial. Day 7: 7-day cube testing for early indicator. Day 14: 28-day cube testing. Deliverables: mix design report with material test results, calculation sheet, trial-mix proportions, slump and density data, 7/28-day strength results, and the recommended design mix proportions.

Coverage

Concrete Mix Design Across India

Wherever your project is, there are two ways to work with NKMPV on Concrete Mix Design.

Standard IS 10262:2019
Field work On site, across India
Laboratory Pinjore, Haryana
Service area Pan-India

Our team travels to your site

For field work, our engineers and instruments mobilise anywhere in India — highway corridors, bridges, plants and greenfield alignments included.

Or courier samples to our lab

Distance is not a constraint for laboratory testing. Send samples to our Pinjore laboratory and receive the digital report on completion — the route most of our out-of-region clients use.

Where NKMPV has delivered projects

  • Chandigarh
  • Panchkula
  • Mohali
  • Ambala
  • Karnal
  • Kurukshetra
  • Yamunanagar
  • Hisar
  • Gurugram
  • Faridabad
  • Ludhiana
  • Jalandhar
  • Patiala
  • Shimla
  • Solan
  • Haryana
  • Punjab
  • Himachal Pradesh

These are locations where we have completed projects — not the boundary of our service area. We mobilise across India on request. See full coverage & project locations →

Which standards does NKMPV follow for Concrete Mix Design?

Concrete Mix Design is carried out to IS 10262:2019, IS 456:2000, IS 516:1959 and IS 1199:1959, as listed in the Applicable Standards section of this page. Tell us the specification your project must comply with and the quotation will state the standard the work follows.

Is there a Concrete Mix Design lab near me?

Our laboratory is at Pinjore, Haryana, within same-day reach of Chandigarh, Panchkula, Mohali, Ambala and the wider Tri-City. If you are further away, distance is not a constraint: our field team travels to site anywhere in India for on-site work, and for laboratory tests you can courier samples to the Pinjore lab and receive the report digitally. Clients across Punjab, Haryana, Himachal Pradesh, Delhi-NCR, Uttarakhand, Rajasthan, Uttar Pradesh, Jammu and Kashmir and Ladakh already work with us this way.

Do you carry out Concrete Mix Design outside your home region?

Yes. NKMPV operates pan-India. We have delivered projects across Chandigarh, Panchkula, Mohali, Ambala, Karnal, Kurukshetra, Yamunanagar, Hisar and beyond, and we mobilise to greenfield and remote corridors on request. The 18 locations listed on our site are the places we have already worked — not the limit of where we go.

How do I book Concrete Mix Design and what does it cost?

Send us the project details — location, quantity, and the standard you need to comply with — and you get a written quotation, usually within one working day. Pricing depends on sample count, site access and mobilisation distance, so we quote per project rather than publishing a fixed rate. Call +91-82953-60108 or use the quote form; every quotation states the applicable IS/IRC standard.

Need Concrete Mix Design for your project?

Get a written quotation Call +91-82953-60108

Concrete Mix Design: Guides & Lab Equipment

Equipment in our laboratory

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Sieve analysis, crushing value, impact value, and water absorption testing per IS 2386.

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Fineness, setting time, soundness, and compressive strength testing per IS 4031/8112/1489.

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Concrete Core and Concrete Cube Testing

Compressive strength testing of cubes and drilled cores per IS 516 and IS 456.

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Paver Block Testing

Compressive strength, water absorption, and abrasion resistance of concrete paver blocks.

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