Q. Super plasticizers reduce water requirement by ___________ %.

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Q. Damp proofing is done with a __________ based mixture.

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Q. Damp proofing __________ the process of water absorption.

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Q. Damp proofing is cheaper in the beginning, but leads to more expensive problems later on.

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Q. Damp proofing cracks along with the foundation.

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Q. Damp proofing __________ resist water well enough.

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Q. DPC _________ effective used in concretes that are in contact with water under pressure.

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Q. Nomenclature of water proofing agent.

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

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Q. Entrapped air normally exists in the form of relatively _________ air voids.

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Q. What is water proofing admixtures?

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Q. Water proofing admixtures are available in powder, paste or liquid and gaesous form.

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Q. Which one is not a chemically active pore filling material?

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Q. Which one is not a chemically inactive pore filling material?

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Q. Chemically active pore fillers __________ the setting of concrete.

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Q. Chemically inactive pore fillers __________ the workability.

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Q. Water repelling materials like soda, potash soaps, etc make the concrete pervious.

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Q. Entrapped air normally exists in the form of relatively __________ air voids.

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Q. What are plasticizers?

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Q. Which one is an anionic surfactants?

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