A.孔隙率 B.孔隙比 C.空隙率 D.孔隙度
A.0.25~0.60% B.0.25~0.8% C.0.5~0.8% D.0.35~0.6%
A.fcu,k=25Mpa B.fcu,k ≤30Mpa C.fcu,k <28Mpa D.fcu,k <30Mpa