Which admixture is commonly used as an accelerator for concrete setting?
Correct answer: C. Calcium chloride
- A. Lignosulphonate
- B. Sodium gluconate
- C. Calcium chloride
- D. Air-entraining resin
Explanation
Calcium chloride accelerates cement hydration and reduces setting time. Its use is restricted or avoided in reinforced and prestressed concrete because chloride ions can promote steel corrosion.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Concrete Technology
Concrete technology covers cement, aggregates, water and admixtures, including their properties, proportioning and effect on fresh and hardened concrete. It explains workability, water-cement ratio, setting, hydration, strength, durability, curing, mix design and common defects, while distinguishing segregation and bleeding from general loss of workability.
Practise Concrete Technology
80 free Concrete Technology MCQs from Civil Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Civil Engineering questions like this
Civil Engineering is on 3 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Concrete Technology questions
In the saturated surface-dry condition, an aggregate particle
What best describes false set in cement?
Which principal compound of Portland cement contributes most to early strength development?
Which characteristic is associated with sulphate-resisting Portland cement?
The main purpose of entrained air in concrete exposed to freezing and thawing is to
In the absolute volume method of concrete mix design, the total volume of ingredients is made approximately equal to the