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一、原材料及其性能采用以下几种原材料，其材性测试结果如下：1．水泥四川江油水泥厂生产的525#（R）水泥，经测试第一批水泥抗压强度为586kg／cm2；第二批水泥抗压强度为578kg／cm2，其它性能均合格．2．砂四川金堂县河砂，表现密度1450kg／m3，相对密度2．60，细度模具MX＝2
First, the following materials are used for raw materials and their properties. The results of their wood properties are as follows: 1. Cement 525#(R) cement produced by Sichuan Jiangyou Cement Plant has been tested for the first batch of cement compressive strength of 586kg/cm2; the second batch of cement has compressive strength of 578kg/cm2, and all other properties are qualified. 2. Sand River in Jintang County, Sichuan Province, with a density of 1450kg/m3, relative density of 2.60, fineness mould MX=2