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Question #94542

Silica sol__________________?

Options:

A) Is applied to the walls of the investment to produce hygroscopic expansion

B) Increase the strength and the setting expansion of the phosphate-bonded investment

C) Acts as a retarder in the silica bonded investments

D) Acts as a refractory in the Silica bonded investments

Answer: Silica sol Increase the strength and the setting expansion of the phosphate-bonded investment.

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