问题
单项选择题
水泥的凝结和硬化与下列哪个因素无关（）
A.水泥的体积和质量
B. 水泥的细度
C. 拌和水量
D. 硬化时间
答案
参考答案：A
解析：
影响水泥凝结和硬化的主要因素有：(1)水泥中C3A(铝酸三钙)的含量越高，石膏等混合材料的含量越少，水泥凝结越快；(2)水泥越细，凝结越快；(3)水灰比越小，凝结时温度越高，凝结越快。
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水泥的凝结和硬化与下列哪个因素无关（）
A.水泥的体积和质量
B. 水泥的细度
C. 拌和水量
D. 硬化时间
参考答案：A
解析：
影响水泥凝结和硬化的主要因素有：(1)水泥中C3A(铝酸三钙)的含量越高，石膏等混合材料的含量越少，水泥凝结越快；(2)水泥越细，凝结越快；(3)水灰比越小，凝结时温度越高，凝结越快。
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