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The addition of the admixture to the mix __________ the surface tension.

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The addition of the admixture to the mix __________ the surface tension.

(a) Lowers

(b) Higher

(c) Don’t affect

(d) No change

The question was asked during an internship interview.

My doubt is from Damp Proofing Admixtures in chapter Admixtures and Construction Chemicals of Concrete Technology

1 Answer

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Best answer
The correct choice is (a) Lowers

Easiest explanation: The addition of the admixture to the mix lowers the surface tension of the water thereby assisting in the formation of bubbles.

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