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[单选题]
按照《GB50086-2015岩土锚杆与喷射混凝土支护工程技术规范》的规定,参加速凝剂的喷射混凝土与不掺速凝剂混凝土强度值比不应低于()。
A.0.85
B.0.9
C.1
D.1.05
查看答案
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A.0.85
B.0.9
C.1
D.1.05
A.小于1.25mm
B.小于2.0mm
C.小于2.5mm
D.小于5.0mm
A.8000m2/kg
B.10000m2/kg
C.12000m2/kg
D.15000m2/kg
A.不大于12mm
B.不大于15mm
C.不大于20mm
D.D、不大于20mm
A.1d强度不低于5MPa
B.1d强度不低于8MPa
C.3d强度不低于10MPa
D.7d强度不低于15MPa
E.28d强度不低于20MPa
A.600
B.660
C.720
D.780