GATE CE 2025 Set 2 — Question 13

MCQ+1 / -0.33EasyConcrete ConstituentsConstruction MaterialsStructural Engineering

Structural Engineering → Construction Materials → Concrete Constituents

Last updated 5 September 2026

Question

Consider the following statements (P) and (Q) : (P) : Fly ash and ground granulated blast furnace slag can be used as mineral admixtures in concrete. (Q) : As per IS 456:2000, the minimum moist curing period becomes higher when a mineral admixture is added to concrete. Identify the CORRECT option from choices given below.

Correct answer (A) Both (P) and (Q) are TRUE. Solution Statement (P) is TRUE: Fly ash and Ground Granulated Blast Furnace Slag (GGBS) are widely recognized and used as mineral admixtures in concrete to improve durability and workability. Statement (Q) is TRUE: According to IS 456:2000, Clause 13.5.1, the minimum curing period for concrete where mineral admixtures or blended cements are used is at least 10 days (compared to 7 days for Ordinary Portland Cement in normal weather conditions). Thus, the curing period is higher when mineral admixtures are added. Therefore, both statements are true. Turn this into a strength. Explore AI-powered practice and doubt support with Success Tracker.

Review answer and solution without JavaScript

Interactive answer checking needs JavaScript. The published solution is available below.

Correct answer (A) Both (P) and (Q) are TRUE. Solution Statement (P) is TRUE: Fly ash and Ground Granulated Blast Furnace Slag (GGBS) are widely recognized and used as mineral admixtures in concrete to improve durability and workability. Statement (Q) is TRUE: According to IS 456:2000, Clause 13.5.1, the minimum curing period for concrete where mineral admixtures or blended cements are used is at least 10 days (compared to 7 days for Ordinary Portland Cement in normal weather conditions). Thus, the curing period is higher when mineral admixtures are added. Therefore, both statements are true.

Continue learning with Success Tracker

Use Success Tracker to ask about the reasoning, then try another GATE CE question to check your understanding.

AI-powered practice· Unlimited practice on eligible plans

PYQs with solutions: Attempt available previous-year questions, then compare your reasoning with the worked solution. Coverage varies by stream.
Practice that adapts: Choose a topic, work on weaker areas and bookmark questions to revisit. Your attempts feed your progress tracking.
AI doubt support: Ask follow-up questions about a step or concept while practising, instead of stopping at the final answer.

Unlimited practice is available on eligible plans. Free practice and AI usage have limits; check the current plan allowances before choosing.

This page stays readable without an account. AI responses can be wrong; check them against the solution and source material.