基于正交试验的活性粉末混凝土强度及流动性研究
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摘要
通过正交试验的方法系统的研究了水胶比、砂胶比、减水剂掺量、粉煤灰掺量、硅灰掺量及钢纤维掺量等参数对活性粉末混凝土(RPC)流动性及不同龄期和养护制度下抗压强度的影响,分析各组分材料掺量的贡献率,得到既定配制材料的最佳掺量和最优配比。基于鲍罗米公式对试验数据进行分析,修正拟合得到了RPC强度计算公式及流动度经验公式,并将计算值与实验值进行对比,两者吻合度较好。
The effects of water-binder radio,sand-binder radio,water reducing agent,fly ash,silica fume and steel fiber on the fluidity of reactive powder concrete (RPC) and the compressive strength under different age and curing regime are systematicallystudied by orthogonal test. The contribution rate of each component is analyzed,the optimum amount of admixture and optimal matching of the prepared materials are obtained. The test datas are analyzed based on the Bowromi formula,the strength formula and the empirical formula of fluidity of RPC are obtained by the modified fitting. The calculated values are compared with the experimental values. Both of them are in good agreement.
The effects of water-binder radio,sand-binder radio,water reducing agent,fly ash,silica fume and steel fiber on the fluidity of reactive powder concrete (RPC) and the compressive strength under different age and curing regime are systematicallystudied by orthogonal test. The contribution rate of each component is analyzed,the optimum amount of admixture and optimal matching of the prepared materials are obtained. The test datas are analyzed based on the Bowromi formula,the strength formula and the empirical formula of fluidity of RPC are obtained by the modified fitting. The calculated values are compared with the experimental values. Both of them are in good agreement.
引文
[1]吴炎海,何雁斌.活性粉末混凝土(RPC200)的配制试验研究[J].中国公路学报,2003,16(4):45-50.
[2]Richard P,Cheyrezy M.Composition of reactive power concrete[J].Cement&Concret Research,1995,25(7):1501-1511.
[3]Richard P.Reactive power concrete with high ductility and 200-800 MPa compressive strength[J].Aci Special Publication,1994,114:507-518.
[4]Bonneau O,Laehemi M,Dallaire E,et al.Mechanical properties and durability of two industrial reactive power concretes[J].Aci Materials Journal,1997,94(4):286-290.
[5]Cheyrezy M,Maret V,Frouin L.Microstructural analysis of RPC(reactive power concrete)[J].Cement and Concrete Research,1995,25(7):1491-1495.
[6]Ahmad S,Zubair A,Maslehuddin M.Effect of key mixture parameters on flow and mechanical properties of reactive powder concrete[J].Construction and Building Materials,2015(99):73-81.
[7]何峰,黄政宇.200~300 MPa活性粉末混凝土(RPC)的配制技术研究[J].混凝土与水泥制品,2000(4):3-7.
[8]郑文忠,李莉.活性粉末混凝土配制及其配合比计算方法[J].湖南大学学报(自然科学版),2009,36(2):13-17.
[9]陶毅,张海镇,史庆轩,等.活性粉末混凝土配合比研究综述[J].西安建筑科技大学学报(自然科学版),2016,48(6):839-845.
[10]GB/T 31387-2015,活性粉末混凝土[S].
[11]Larrard F.A survey of Recent Research performed inthe French"LCPC"Networkon High PerformanceConcrete[C].Proceeding of High Strength Concrete,Norway:Lillehammer,1993:20-24.
[12]Bache H H.Densified Cement/Ultrafine Particle BasedMaterials[C].Second International Conf.On Superplasticizersin Concrete,Canada:Ottawa,1981.
[2]Richard P,Cheyrezy M.Composition of reactive power concrete[J].Cement&Concret Research,1995,25(7):1501-1511.
[3]Richard P.Reactive power concrete with high ductility and 200-800 MPa compressive strength[J].Aci Special Publication,1994,114:507-518.
[4]Bonneau O,Laehemi M,Dallaire E,et al.Mechanical properties and durability of two industrial reactive power concretes[J].Aci Materials Journal,1997,94(4):286-290.
[5]Cheyrezy M,Maret V,Frouin L.Microstructural analysis of RPC(reactive power concrete)[J].Cement and Concrete Research,1995,25(7):1491-1495.
[6]Ahmad S,Zubair A,Maslehuddin M.Effect of key mixture parameters on flow and mechanical properties of reactive powder concrete[J].Construction and Building Materials,2015(99):73-81.
[7]何峰,黄政宇.200~300 MPa活性粉末混凝土(RPC)的配制技术研究[J].混凝土与水泥制品,2000(4):3-7.
[8]郑文忠,李莉.活性粉末混凝土配制及其配合比计算方法[J].湖南大学学报(自然科学版),2009,36(2):13-17.
[9]陶毅,张海镇,史庆轩,等.活性粉末混凝土配合比研究综述[J].西安建筑科技大学学报(自然科学版),2016,48(6):839-845.
[10]GB/T 31387-2015,活性粉末混凝土[S].
[11]Larrard F.A survey of Recent Research performed inthe French"LCPC"Networkon High PerformanceConcrete[C].Proceeding of High Strength Concrete,Norway:Lillehammer,1993:20-24.
[12]Bache H H.Densified Cement/Ultrafine Particle BasedMaterials[C].Second International Conf.On Superplasticizersin Concrete,Canada:Ottawa,1981.