混凝土配合比试验记录表2

续表,,,,,,,,,,,,,,,,,,,,

3.确定基准配合比水泥：砂：碎石：水：外加剂=,,,,,,,1：2.00：2.99：0.49,,,,,,,,,,,,,

(三)检验强度、测定试验室配合比,,,,,,,,,,,,,,,,,,,,

1、根据基准水灰比分别增减0.05（高强砼差值可适当缩小）砂、石用量保持不变，试拌调整其工作性。,,,,,,,,,,,,,,,,,,,,

水灰比,次数,水,水泥,砂子,碎石,,,外加剂,掺合物,钢纤维,品质鉴定,,,,,,,,,

,,,,,1#20%,2#40%,3#40%,,,,坍落度,粘聚性,保水性,,,,,,,

0.44,1,4.625,10.5,18.45,5.535,11.07,11.07,,,,6.5cm,良好,少量,,,420.4545455,737.8181818,1106.727273,185,

,2,4.625,10.5,18.45,5.535,11.07,11.07,,,,6.5cm,良好,少量,,,420,738,1107,185,

0.54,1,4.625,8.575,19.225,5.77,11.53,11.53,,,,5.5cm,良好,少量,,,1,1.757142857,2.635714286,0.44047619,

,2,4.625,8.575,19.225,5.77,11.53,11.53,,,,5.5cm,良好,少量,,,10.500,18.450,27.675,4.625,

2、测定混凝土容重：,,,,,,,,,,,,,,,,,,,,

水灰比,筒+砼重(kg),,筒重(kg),,砼重(kg),,筒体积(m3),,容重(kg/m3),,平均容重(kg/m3),,,,,,5.535,11.07,11.07,

0.44,13.636,,1.15,,12.486,,0.005016,,2489,,2484,,,,,,,27.675,,

,13.582,,1.15,,12.432,,0.005016,,2478,,,,,,,2.27027027,,1.196,,

0.49,13.622,,1.15,,12.472,,0.005016,,2486,,2491,,,,,2.27027027,,0.598,,

,13.672,,1.15,,12.522,,0.005016,,2496,,,,,,,2.043243243,,,2.64,

0.54,13.716,,1.15,,12.566,,0.005016,,2505,,2503,,,,,,,,,

,13.694,,1.15,,12.544,,0.005016,,2501,,,,,,,,,,,

3、检验强度,,,,,,,,,,,,,,,,,,,,

不同水灰比的混凝土强度值,,,,,,,,,,,,,,,,,,38.2,,

组别,水灰比,灰水比,制件日期,,试验日期,,数量,,"28d抗压强度值fcu,28(Mpa)",,,,,,,,,,,

A,0.44,2.27,2008.9.1,,2008.9.29,,一组,,50.2,,,,,,,,,,,

B,0.49,2.04,2008.9.1,,2008.9.29,,一组,,47.6,,,,,,2.27,50.2,1.8568,38.2,1.86,185

C,0.54,1.85,2008.9.1,,2008.9.29,,一组,,37.9,,,,,,2.04,47.6,,,,344.1

"4、混凝土28d抗压强度(fc,28)与灰水比(C/W)关系：",,,,,,,,,,,,,,,1.85,37.9,,,0.537634409,

,,,,,,,,,,,,,,,,,,,,,

"由图可知，相应砼配制强度fcu,o=",,,,,38.2,,Mpa时的灰水比C/W=,,,1.86,，即水灰比W/C=,,0.54,,,,,,,

5、确定试验室配合比：,,,,,,,,,,,,,,,,,,,,

材料,按强度修正试验结果,,,,,,按实测容重表观密度修正,,,,,,,,,,,,,

,计算式,,,用量(kg)①,,,①×(实测容重÷理论容重)Kg,,,,,,,,,,,,,

水泥,Mco=Mwo/W/C,,,378,,,378,,,,,,,,,,,,,

细集料,Mso=(Mcp-Mco-Mwo)*βs,,,755,,,755,,,,,,,,,,,,,

粗集料,Mgo=Mcp-Mso,,,1132,,,1132,,,,,,,,,,,,,

水,Mwo=Mwo,,,185,,,185,,,,,,,,,,,,,

添加剂,,,,,,,,,,,,,,,,,,,,

试验室配合比水泥：砂：石：水:外加剂,,,,,1：2.00：2.99：0.49,,,,