Concrete Mix Design MCQ with answer and solution

Concept

IS code specifications for concrete mix design

Formula

NONE

Step-by-step solution

1. IS 10262 is the dedicated Indian Standard titled 'Concrete Mix Proportioning — Guidelines'. 2. It details procedures for selecting water-cement ratio, minimum cementitious material content, and aggregate grading proportions. 3. IS 456 provides general structural design requirements, IS 383 specifies aggregates, and IS 800 specifies structural steelwork. 4. Hence, IS 10262 is the standard code used for concrete mix design. Answer: B

Explanation

IS 10262:2019 provides standard guidelines for concrete mix proportioning in India, covering normal, high-strength, and self-compacting concrete. IS 456 provides the general code of practice for plain and reinforced concrete, whereas IS 383 covers aggregates and IS 800 specifies structural steel design. Therefore, IS 10262 is the designated code for concrete mix design.

Why the other options are wrong

A) IS 456 is the code of practice for general structural design and construction of plain and reinforced concrete. C) IS 383 specifies requirements for coarse and fine aggregates. D) IS 800 is the code of practice for general structural steel design.

Shortcut

IS 10262 = Concrete Mix Proportioning; IS 456 = RCC General Code.

Common mistake

Selecting IS 456 because it is the most frequently cited general standard for plain and reinforced concrete.