- 胡智農1,2,3,楊 黎1,2,3,劉 昊4
2013年第3期
摘要
引用本文
摘??要:利用廢棄混凝土粉磨制作再生微粉作為摻合料應用于水泥混凝土中。研究了再生微粉混凝土的抗凍性及抗碳化性能,同時與粉煤灰及礦粉作為摻合料的混凝土進行性能對比,進一步研究再生微粉與其它摻合料共摻情況下混凝土的耐久性。研究結果表明,控制再生微粉摻量的混凝土抗凍性及抗碳化耐久性能與普通混凝土相當;采用堿性激發劑的再生微粉混凝土、再生微粉與粉煤灰及礦粉雙摻及三摻情況下,混凝土的耐久性更優。Abstract:Cementconcreteismixedbyrecycledmicro-powderwithwasteconcretepowder.Thefreezingresistanceandcarbonationresistanceofrecycledmicro-powderconcreteareresearched,andtheperformancesofconcretewithflyashandslagpowderarecomparedwiththoseofrecycledmicro-powderconcrete.Therefore,thedurabilityofconcreteisfurtherstudiedwhenrecycledmicro-powderismixedwithotheradmixtures.Theresultsindicatethatthefreezingresistanceandcarbonationresistanceofrecycledmicro-powderconcretearesimilarwiththoseofcommonconcretewhencontrollingthedosageofrecycledmicro-powder.Thedurabilityofrecycledmicro-powderconcreteisbetterwhenusingthealkaliactivatoraswellasmixedwithflyashandslagpowder.