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Introduction Of Silica Sand

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Introduction Of Silica Sand

To make calcium silicate bricks silica sand is mixed with high calcium lime at a sand–lime ratio of 10 or 20. The mix is then compressed into moulds and autoclaved at about 170 C 340 F for several hours. Some gel similar to the calcium silicate hydrate gel of the type that is formed by cement is formed and this bonds the sand particles together.