C25喷射砼PHB设计：¬*ÉÀÔçbbs.3c3t.comÌòðr¨Âå2-y
1、水泥：42.5¬*ÉÀÔçbbs.3c3t.comÌòðr¨Âå2-y
2、碎石：5~10、¬*ÉÀÔçbbs.3c3t.comÌòðr¨Âå2-y
3、砂：中砂¬*ÉÀÔçbbs.3c3t.comÌòðr¨Âå2-y
4、外加剂：速凝剂¬*ÉÀÔçbbs.3c3t.comÌòðr¨Âå2-y
PHB设计：¬*ÉÀÔçbbs.3c3t.comÌòðr¨Âå2-y
1、fcu,o＝fcu,k＋1.645＝25＋1.645×5＝33.2MPa¬*ÉÀÔçbbs.3c3t.comÌòðr¨Âå2-y
2、W/C＝0.45¬*ÉÀÔçbbs.3c3t.comÌòðr¨Âå2-y
3、用水量：200kg¬*ÉÀÔçbbs.3c3t.comÌòðr¨Âå2-y
4、水泥：C＝200/0.45＝444kg¬*ÉÀÔçbbs.3c3t.comÌòðr¨Âå2-y
5、砂率：50%¬*ÉÀÔçbbs.3c3t.comÌòðr¨Âå2-y
6、砂石用量：假定容重为2200kg/m3¬*ÉÀÔçbbs.3c3t.comÌòðr¨Âå2-y
砂：S＝(2200－444－200) ×50%＝778kg¬*ÉÀÔçbbs.3c3t.comÌòðr¨Âå2-y
石：C＝2200－444－200－778＝778kg¬*ÉÀÔçbbs.3c3t.comÌòðr¨Âå2-y
C∶W∶C∶S＝¬*ÉÀÔçbbs.3c3t.comÌòðr¨Âå2-y
444∶220∶778∶778¬*ÉÀÔçbbs.3c3t.comÌòðr¨Âå2-y
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