C25喷射砼PHB设计:ï£ÇÖ¡$Íä@9bbs.3c3t.comk åÒçÜÑC
1、水泥:42.5ï£ÇÖ¡$Íä@9bbs.3c3t.comk åÒçÜÑC
2、碎石:5~10、ï£ÇÖ¡$Íä@9bbs.3c3t.comk åÒçÜÑC
3、砂:中砂ï£ÇÖ¡$Íä@9bbs.3c3t.comk åÒçÜÑC
4、外加剂:速凝剂ï£ÇÖ¡$Íä@9bbs.3c3t.comk åÒçÜÑC
PHB设计:ï£ÇÖ¡$Íä@9bbs.3c3t.comk åÒçÜÑC
1、fcu,o=fcu,k+1.645=25+1.645×5=33.2MPaï£ÇÖ¡$Íä@9bbs.3c3t.comk åÒçÜÑC
2、W/C=0.45ï£ÇÖ¡$Íä@9bbs.3c3t.comk åÒçÜÑC
3、用水量:200kgï£ÇÖ¡$Íä@9bbs.3c3t.comk åÒçÜÑC
4、水泥:C=200/0.45=444kgï£ÇÖ¡$Íä@9bbs.3c3t.comk åÒçÜÑC
5、砂率:50%ï£ÇÖ¡$Íä@9bbs.3c3t.comk åÒçÜÑC
6、砂石用量:假定容重为2200kg/m3ï£ÇÖ¡$Íä@9bbs.3c3t.comk åÒçÜÑC
砂:S=(2200-444-200) ×50%=778kgï£ÇÖ¡$Íä@9bbs.3c3t.comk åÒçÜÑC
石:C=2200-444-200-778=778kgï£ÇÖ¡$Íä@9bbs.3c3t.comk åÒçÜÑC
C∶W∶C∶S=ï£ÇÖ¡$Íä@9bbs.3c3t.comk åÒçÜÑC
444∶220∶778∶778ï£ÇÖ¡$Íä@9bbs.3c3t.comk åÒçÜÑC