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来源:百度知道 编辑:UC知道 时间:2024/05/18 00:41:36
The result showes that with the increase of gypsum powder and glass fiber, the contraction rate of UPR reduced during the test; The contraction rate of UPR increased when the quantity of acetone was relatively small.The contraction rate declined when the quantity was bigger than 15%. The addition of acetone can improve UPR compressive strength. When the quantity of acetone reached at 20 ml,the compressive strength was 63856.42 KN / ㎡; The addition of gypsum powder can improve the compressive strength of UPR when the quantity was small,it is to say that the compressive strength reaches its max 55032.37 KN / ㎡ when the quantity of gypsum powder is 10g. But with the increase of gypsum powder(when >10g)the compressive strength would be reduced; With the addition of glass fiber, the compressive strength of UPR would be increased as a result, when the quantity of glass fiber reaches 20%, the compressive strength would reach its max 58391.58 KN / ㎡.