M35 Mix Design Calculator 2026 | IS 10262:2019 Concrete Mix Design — 35 MPa

📅 IS 10262:2019 · IS 456:2000 · 2026

M35 Concrete Mix Design Calculator

Complete IS 10262:2019 step-by-step mix design for M35 grade concrete (fck = 35 MPa) — Target mean strength, w/c ratio, water content, cement, aggregate proportions, batch quantities & IS 456 compliance

✅ IS 10262:2019 Compliant ✅ IS 456:2000 Durability Check 🔢 OPC 53 / 43 Grade 🌿 Carbon Footprint

Stipulation of Data

IS 10262:2019 Cl. 4 — Define all design requirements before calculation begins

Grade (fixed M35)

Cement Type & Grade

IS 456 Exposure Class

Workability — Target Slump (mm)

Maximum Aggregate Size (mm)

Aggregate Type

FA Grading Zone (IS 383)

Superplasticiser Used?

Standard Deviation Source

Actual σ (MPa)

From ≥30 cube results (IS 456 Cl. 15.1.1)

Fly Ash Addition (% of cement, 0 if none)

Added separately; k = 0.25 per IS 10262 Cl. 5.7

Air Content (%)

Typically 1.0–2.0% for non-AEA mixes

Aggregate Properties (from IS 2386 lab tests)

Cement SG

Coarse Agg SG (Gsb)

Fine Agg SG (Gsb)

CA Dry-Rodded Bulk Density (kg/m³)

SCM SG (if FA/GGBS/SF added)

FA≈2.20; GGBS≈2.90; SF≈2.20

✅ M35 Mix Design Complete — IS 10262:2019

All quantities per cubic metre (m³) of concrete · SSD basis ·

Cement

—

kg/m³

Water (Batch)

—

L/m³

Fine Aggregate

—

kg/m³

Coarse Aggregate

—

kg/m³

SCM / Fly Ash

—

kg/m³

w/c Adopted

—

dimensionless

Target Mean Str.

—

MPa (fcr)

Unit Weight

—

kg/m³

2 Target Mean Strength (TMS)

IS 10262:2019 Cl. 5.3.2 — fcr = fck + 1.65 × S

—

fck

MPa

Std Deviation σ

—

MPa

Margin (1.65×σ)

—

MPa

TMS (fcr)

—

MPa

Expected 7d

—

MPa (~72%)

Expected 3d

—

MPa (~55%)

3 Water-Cement Ratio Selection

IS 10262:2019 Cl. 5.6 — Adopt lower of strength-derived and IS 456 Table 5 durability limit

—

Strength-Derived w/c

—

IS 10262 Fig. 1

IS 456 Max w/c

—

Table 5

Design w/c (Adopted)

—

governs

Governing

—

4 Water Content

IS 10262:2019 Table 2 — Design water content by slump and maximum aggregate size

—

Base Water (Table 2)

—

L/m³

SP Reduction

—

L/m³

Design Water W

—

L/m³

5 Cement Content

IS 10262:2019 Cl. 5.5 — C = W / (w/c) · Check IS 456 Table 5 min and max 450 kg/m³

—

Cement Content C

—

kg/m³

SCM / Fly Ash

—

kg/m³

Effective w/c

—

(k=0.25 FA)

IS 456 Min

—

kg/m³

IS 456 Max

450

kg/m³

6 Aggregate Proportioning

IS 10262:2019 Table 3 — jc by zone, then FA by absolute volume balance

—

jc (CA fraction)

—

m³/m³

Coarse Aggregate

—

kg/m³

Fine Aggregate

—

kg/m³

Volume Balance

—

m³ (≈1.000)

Unit Weight

—

kg/m³

FA / Total Agg

—

7 Mix Proportions Summary

All quantities per m³ of concrete (SSD basis) · Batch quantities require moisture correction

Material	Quantity (kg/m³ or L/m³)	Volume (m³/m³)	Ratio (relative to Cement)	IS Standard

📋 IS 456:2000 Durability Compliance Summary

8 Trial Mix Quantities

IS 10262:2019 Cl. 9 — Minimum 3 trial mixes at design w/c and ±10% variation

—

Trial	w/c	Cement (kg)	Water (L)	FA (kg)	CA (kg)	Purpose

Trial Mix Volume (IS 10262 Cl. 9): Conduct each trial on minimum 30 litres (0.030 m³) of fresh concrete. Cast minimum 3 × 150 mm cubes per trial. Cure under standard conditions (IS 516). Accept if TMS = — MPa is achieved at 28 days with slump within design range. Reject and redesign if 28d mean < 0.9 × TMS.

9 Embodied Carbon Estimate

ICE Database v3.0 (2023) emission factors — indicative embodied carbon per m³

CO₂ from Cement

—

kgCO₂/m³

CO₂ from SCMs

—

kgCO₂/m³

CO₂ from Aggregates

—

kgCO₂/m³

Total CO₂

—

kgCO₂/m³

Carbon Class

—

📄

M35 Grade Reference Data

Quick-reference specifications and typical values for M35 concrete — IS 456:2000, IS 10262:2019

        🔎 M35 Grade — Key Facts (IS 456:2000)
        Characteristic Cube Strength: fck = 35 MPa at 28 days (150 mm cube, IS 516)
IS 456 Classification: Standard Concrete — minimum for Very Severe exposure (IS 456 Table 5)
Target Mean Strength (IS 10262): fcr = 35 + 1.65 × 5.0 = 43.25 MPa (assumed σ = 5.0 MPa)
Max w/c: 0.45 (Very Severe exposure per IS 456 Table 5)
Min Cement: 340 kg/m³ (Very Severe exposure per IS 456 Table 5)
EN 206 Equivalent: C28/35 (cylinder/cube notation)
ACI f'c Equivalent: ≈ 28 MPa (cylinder) = 4060 psi
Min Cover (slab): 50 mm (Very Severe, IS 456 Table 16)
Mix Type: Design Mix mandatory (IS 456 Cl. 9.1 — M30 and above)
Superplasticiser: Strongly recommended — without SP, cement approaches IS 456 maximum of 450 kg/m³

    

Typical M35 Application: High-rise columns and core walls, prestressed concrete beams (IS 1343 min M35 post-tensioned), bridges over inland waterways, parking structures with de-icing exposure, precast structural elements, retaining walls in moderately aggressive soils, industrial floors for medium-heavy duty service.