【单选题】
单位用水量在水灰比和水泥用量不变的情况下,能够反映 ___
A. 水泥浆量与骨料用量之间的比例关系
B. 水泥与骨料用量的比例关系
C. 混凝土外加剂的用量
D. 细骨料和粗骨料用量之间的关系
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答案
A
解析
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混凝土和钢筋可以共同工作,是由于两者具有几乎相等的___
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B. 线膨胀系数
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配1m3混凝土,需水泥300kg,水180kg,现场配制时加水量为150kg,混凝土的实际水灰比为___
A. 0.6
B. 0.55
C. 0.5
D. 无法确定
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分计筛余百分率(%)a1为___
A. 4.5
B. 10.5
C. 20.5
D. 24.5
【单选题】
分计筛余百分率(%)a2为___
A. 4.5
B. 10.5
C. 20.5
D. 24.5
【单选题】
分计筛余百分率(%)a3为___
A. 4.5
B. 10.5
C. 20.5
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【单选题】
分计筛余百分率(%)a4为___
A. 4.5
B. 10.5
C. 20.5
D. 24.5
【单选题】
分计筛余百分率(%)a6为___
A. 14.5
B. 10.5
C. 20.5
D. 24.5
【单选题】
累计筛余百分率(%)A2为___
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【单选题】
累计筛余百分率(%)A3为___
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累计筛余百分率(%)A4为___
A. 15
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累计筛余百分率(%)A5为___
A. 15
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【单选题】
累计筛余百分率(%)A6为___
A. 35.5
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细度模数为___
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该砂为___
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该砼28d的标准立方体抗压强度___
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【单选题】
水泥的实际强度为___
A. 35
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【单选题】
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砂浆中加入其他掺和剂的主要原因是___
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确定W/C___
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计算水泥用量___
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计算细骨料用量___
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【单选题】
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该钢筋的抗拉强度___
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该钢筋的断后伸长率δ5___
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该钢筋的屈强比___
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