混凝土配合比試驗(yàn)記錄表2

續(xù)表,,,,,,,,,,,,,,,,,,,,

3.確定基準(zhǔn)配合比水泥：砂：碎石：水：外加劑=,,,,,,,1：2.00：2.99：0.49,,,,,,,,,,,,,

(三)檢驗(yàn)強(qiáng)度、測定試驗(yàn)室配合比,,,,,,,,,,,,,,,,,,,,

1、根據(jù)基準(zhǔn)水灰比分別增減0.05（高強(qiáng)砼差值可適當(dāng)縮?。┥啊⑹昧勘３植蛔?，試拌調(diào)整其工作性。,,,,,,,,,,,,,,,,,,,,

水灰比,次數(shù),水,水泥,砂子,碎石,,,外加劑,摻合物,鋼纖維,品質(zhì)鑒定,,,,,,,,,

,,,,,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、測定混凝土容重：,,,,,,,,,,,,,,,,,,,,

水灰比,筒+砼重(kg),,筒重(kg),,砼重(kg),,筒體積(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、檢驗(yàn)強(qiáng)度,,,,,,,,,,,,,,,,,,,,

不同水灰比的混凝土強(qiáng)度值,,,,,,,,,,,,,,,,,,38.2,,

組別,水灰比,灰水比,制件日期,,試驗(yàn)日期,,數(shù)量,,"28d抗壓強(qiáng)度值fcu,28(Mpa)",,,,,,,,,,,

A,0.44,2.27,2008.9.1,,2008.9.29,,一組,,50.2,,,,,,,,,,,

B,0.49,2.04,2008.9.1,,2008.9.29,,一組,,47.6,,,,,,2.27,50.2,1.8568,38.2,1.86,185

C,0.54,1.85,2008.9.1,,2008.9.29,,一組,,37.9,,,,,,2.04,47.6,,,,344.1

"4、混凝土28d抗壓強(qiáng)度(fc,28)與灰水比(C/W)關(guān)系：",,,,,,,,,,,,,,,1.85,37.9,,,0.537634409,

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

"由圖可知，相應(yīng)砼配制強(qiáng)度fcu,o=",,,,,38.2,,Mpa時(shí)的灰水比C/W=,,,1.86,，即水灰比W/C=,,0.54,,,,,,,

5、確定試驗(yàn)室配合比：,,,,,,,,,,,,,,,,,,,,

材料,按強(qiáng)度修正試驗(yàn)結(jié)果,,,,,,按實(shí)測容重表觀密度修正,,,,,,,,,,,,,

,計(jì)算式,,,用量(kg)①,,,①×(實(shí)測容重÷理論容重)Kg,,,,,,,,,,,,,

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

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

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

水,Mwo=Mwo,,,185,,,185,,,,,,,,,,,,,

添加劑,,,,,,,,,,,,,,,,,,,,

試驗(yàn)室配合比水泥：砂：石：水:外加劑,,,,,1：2.00：2.99：0.49,,,,