C25喷射砼PHB设计:f¢·[ŪN¾·bbs.3c3t.coms£"wmN_
1、水泥:42.5f¢·[ŪN¾·bbs.3c3t.coms£"wmN_
2、碎石:5~10、f¢·[ŪN¾·bbs.3c3t.coms£"wmN_
3、砂:中砂f¢·[ŪN¾·bbs.3c3t.coms£"wmN_
4、外加剂:速凝剂f¢·[ŪN¾·bbs.3c3t.coms£"wmN_
PHB设计:f¢·[ŪN¾·bbs.3c3t.coms£"wmN_
1、fcu,o=fcu,k+1.645=25+1.645×5=33.2MPaf¢·[ŪN¾·bbs.3c3t.coms£"wmN_
2、W/C=0.45f¢·[ŪN¾·bbs.3c3t.coms£"wmN_
3、用水量:200kgf¢·[ŪN¾·bbs.3c3t.coms£"wmN_
4、水泥:C=200/0.45=444kgf¢·[ŪN¾·bbs.3c3t.coms£"wmN_
5、砂率:50%f¢·[ŪN¾·bbs.3c3t.coms£"wmN_
6、砂石用量:假定容重为2200kg/m3f¢·[ŪN¾·bbs.3c3t.coms£"wmN_
砂:S=(2200-444-200) ×50%=778kgf¢·[ŪN¾·bbs.3c3t.coms£"wmN_
石:C=2200-444-200-778=778kgf¢·[ŪN¾·bbs.3c3t.coms£"wmN_
C∶W∶C∶S=f¢·[ŪN¾·bbs.3c3t.coms£"wmN_
444∶220∶778∶778f¢·[ŪN¾·bbs.3c3t.coms£"wmN_