The naphthalene compound retarding super plasticizer into super plasticizer( WRA1 ) and early strength-with gas-retarding super plasticizer(WRA2) two types of test system by comparing them with baseline( without super plasticizer) ,and when mixed with FDN paste,mortar,concrete strength and the contraction level.%萘系复合高效减水剂分为缓凝型高效减水剂(WRA1)和早强-引气-缓凝型高效减水剂(WRA2)两种,通过试验系统比较了它们与基准(不掺减水剂)和掺FDN时的净浆、砂浆、混凝土强度和收缩的影响程度.
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