•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?E@obLL Obbs.3c3t.com]1X§{¯j×
E@obLL Obbs.3c3t.com]1X§{¯j×E@obLL Obbs.3c3t.com]1X§{¯j×答:E@obLL Obbs.3c3t.com]1X§{¯j×
水泥:300(1+5%)=315 kg/m3E@obLL Obbs.3c3t.com]1X§{¯j×
E@obLL Obbs.3c3t.com]1X§{¯j×E@obLL Obbs.3c3t.com]1X§{¯j×
水:E@obLL Obbs.3c3t.com]1X§{¯j×
150 (1+5%)=157.5 kg/m3E@obLL Obbs.3c3t.com]1X§{¯j×
E@obLL Obbs.3c3t.com]1X§{¯j×配合比E@obLL Obbs.3c3t.com]1X§{¯j×
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E@obLL Obbs.3c3t.com]1X§{¯j×E@obLL Obbs.3c3t.com]1X§{¯j×
(1)E@obLL Obbs.3c3t.com]1X§{¯j×
单位用量表达方式:E@obLL Obbs.3c3t.com]1X§{¯j×
E@obLL Obbs.3c3t.com]1X§{¯j×E@obLL Obbs.3c3t.com]1X§{¯j×
水泥∶水∶砂∶石E@obLL Obbs.3c3t.com]1X§{¯j×
E@obLL Obbs.3c3t.com]1X§{¯j×E@obLL Obbs.3c3t.com]1X§{¯j×
315 ∶ 157.5 ∶ 600 ∶ 1200(kg/m3)E@obLL Obbs.3c3t.com]1X§{¯j×
E@obLL Obbs.3c3t.com]1X§{¯j×E@obLL Obbs.3c3t.com]1X§{¯j×
(2)相对用量表达方式E@obLL Obbs.3c3t.com]1X§{¯j×
E@obLL Obbs.3c3t.com]1X§{¯j×E@obLL Obbs.3c3t.com]1X§{¯j×
水泥∶砂∶石,W/C=E@obLL Obbs.3c3t.com]1X§{¯j×
E@obLL Obbs.3c3t.com]1X§{¯j×E@obLL Obbs.3c3t.com]1X§{¯j×
1 ∶ 1.90 ∶ 3.81,W/C=0.50E@obLL Obbs.3c3t.com]1X§{¯j×