Author: tsquarecivilengineering

Learn the durability requirements used in concrete mix design as per IS 456, including exposure classification, maximum free water-cement ratio, minimum cement content, minimum concrete grade and practical design checks.

Concrete mix design often uses more than one coarse aggregate size. A concrete described as using 20 mm nominal maximum aggregate does not necessarily contain …

Learn how to calculate fineness modulus of fine aggregate from sieve analysis, interpret FM values, compare grading zones and use FM correctly in concrete mix design and quality control.

Learn Fine Aggregate Grading Zones I to IV as per IS 383:2016, including sieve limits and how the grading zone affects fine/coarse aggregate proportioning in IS 10262 concrete mix design.

Learn how to determine fresh concrete density and calculate actual concrete yield, relative yield, under-yield, over-yield and batch correction using IS 1199 test data.

Learn how to select nominal maximum aggregate size in concrete mix design using member thickness, reinforcement spacing, concrete cover, pumping requirements and IS 10262 calculations.

Learn entrapped air in concrete mix design with IS 10262:2019 values, air-volume calculation, effect on aggregate quantity and the difference between entrapped and entrained air.

Learn pumped concrete mix design with aggregate proportioning, pumpability adjustment, workability, superplasticizer, pipeline considerations and practical trial pumping.