•当初步配合比是300:150:600:1200(kg/m3)时,拌合混凝土进行工作性检验,发现坍落度偏低需增加5%的水泥浆,问调整后的混凝土配合比是多少?
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bbs.3c3t.comUúÐu97U答:
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水泥:300(1+5%)=315 kg/m3
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水:
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150 (1+5%)=157.5 kg/m3
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bbs.3c3t.comUúÐu97U配合比
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(1)
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单位用量表达方式:
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水泥∶水∶砂∶石
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315 ∶ 157.5 ∶ 600 ∶ 1200(kg/m3)
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(2)相对用量表达方式
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水泥∶砂∶石,W/C=
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1 ∶ 1.90 ∶ 3.81,W/C=0.50
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