C25喷射砼PHB设计:wsm|¿F('kbbs.3c3t.comYÆÐ¤òÇa·5
1、水泥:42.5wsm|¿F('kbbs.3c3t.comYÆÐ¤òÇa·5
2、碎石:5~10、wsm|¿F('kbbs.3c3t.comYÆÐ¤òÇa·5
3、砂:中砂wsm|¿F('kbbs.3c3t.comYÆÐ¤òÇa·5
4、外加剂:速凝剂wsm|¿F('kbbs.3c3t.comYÆÐ¤òÇa·5
PHB设计:wsm|¿F('kbbs.3c3t.comYÆÐ¤òÇa·5
1、fcu,o=fcu,k+1.645=25+1.645×5=33.2MPawsm|¿F('kbbs.3c3t.comYÆÐ¤òÇa·5
2、W/C=0.45wsm|¿F('kbbs.3c3t.comYÆÐ¤òÇa·5
3、用水量:200kgwsm|¿F('kbbs.3c3t.comYÆÐ¤òÇa·5
4、水泥:C=200/0.45=444kgwsm|¿F('kbbs.3c3t.comYÆÐ¤òÇa·5
5、砂率:50%wsm|¿F('kbbs.3c3t.comYÆÐ¤òÇa·5
6、砂石用量:假定容重为2200kg/m3wsm|¿F('kbbs.3c3t.comYÆÐ¤òÇa·5
砂:S=(2200-444-200) ×50%=778kgwsm|¿F('kbbs.3c3t.comYÆÐ¤òÇa·5
石:C=2200-444-200-778=778kgwsm|¿F('kbbs.3c3t.comYÆÐ¤òÇa·5
C∶W∶C∶S=wsm|¿F('kbbs.3c3t.comYÆÐ¤òÇa·5
444∶220∶778∶778wsm|¿F('kbbs.3c3t.comYÆÐ¤òÇa·5