粉煤灰和矿粉双掺对水泥基材料固化氯离子能力的研究
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摘要
以单掺和复掺矿物掺合料(粉煤灰、矿粉)的方式,研究水泥基材料对氯离子的固化特性。结果表明:单掺情况下,反应前期掺矿粉水泥基材料氯离子固化率高于掺粉煤灰;反应后期则相反,表明粉煤灰固化氯离子效果优于矿粉。复掺情况下,反应前期氯离子固化率随着F/S(粉煤灰/矿粉)比例的减小而增大;反应后期随着F/S(粉煤灰/矿粉)比例的增大而增大,表明随着粉煤灰掺入比例的增大,氯离子固化率变大。比较单掺和复掺的氯离子固化率可知,复掺固化率与单掺粉煤灰相近,并高于单掺矿粉。但是,就反应前期来看,复掺时的固化率高于任何一种单掺形式,表明,复掺对胶凝材料反应前期的氯离子固化率提升较快。
The chloride binding capability of slag-fly ash mixed cement based materials is studied. The experimental results showed that the chloride binding capability of the cement based materials mixed with fly ash is lower than which mixed with slag at first,and higher than it later. In experiment of slag-fly ash mixed cement based materials,the chloride binding capability is becoming higher when the F / S( Fly ash /Slag) ratio is low at first,and then come down. Compared the mixed cement based materials with the single cement based materials,the chloride binding capability of the mixed materials is the same as the material mixed with fly ash single,and higher than which mixed with slag. But the chloride binding capability of the mixed materials is higher than any single cement based materials in the early stage of hydration process,it is also associated with the high ratio of aluminum in fly ash.
The chloride binding capability of slag-fly ash mixed cement based materials is studied. The experimental results showed that the chloride binding capability of the cement based materials mixed with fly ash is lower than which mixed with slag at first,and higher than it later. In experiment of slag-fly ash mixed cement based materials,the chloride binding capability is becoming higher when the F / S( Fly ash /Slag) ratio is low at first,and then come down. Compared the mixed cement based materials with the single cement based materials,the chloride binding capability of the mixed materials is the same as the material mixed with fly ash single,and higher than which mixed with slag. But the chloride binding capability of the mixed materials is higher than any single cement based materials in the early stage of hydration process,it is also associated with the high ratio of aluminum in fly ash.
引文
[1]胡红梅,马保国.矿物功能材料的氯离子结合能力[J].建筑材料学报,2004,7(4):406-410.
[2]罗睿,蔡跃波,王昌义.磨细矿渣净浆和砂浆结合外渗氯离子的性能[J].建筑材料学报,2001,4(2):148-153.
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[5]曹青,谭克锋,袁伟.矿物掺合料对水泥基材料氯离子固化能力影响的研究[J].四川建筑科学研究,2009,35(3):189-192.
[6]高祥彪,钱春香,钱桂枫,等.复掺粉煤灰与矿渣微粉对高强混凝土力学性能的影响[J].21世纪建筑材料,2010,2(2):10-13.
[7]陈正,杨绿峰,王焱,等.复合外掺料高性能混凝土的氯离子扩散性能[J].广西大学学报,2010,35(6):908-913.
[8]陈琳,潘如意,沈晓冬,等.粉煤灰-矿渣-水泥复合胶凝材料强度和水化性能[J].建筑材料学报,2010,13(6):380-384.
[9]Ipavec A.Chloride binding into hydrated blended cements:The influence of limestone and alkalinity[J].Cement and Concrete Research,2013,48(0):74-85.
[10]Berndt M L.Properties of sustainable concrete containing fly ash,slag and recycled concrete aggregate[J].Construction and Building Materials,2009,23(7):2606-2613.
[11]王晓刚,史才军,何富强,等.氯离子结合及其对水泥基材料微观结构的影响[J].硅酸盐学报,2013,41(2):187-198.
[12]罗睿,蔡跃波,王昌义,等.磨细矿渣抗氯离子侵蚀性能的机理研究[J].土木工程学报,2002,35(6):100-104.
[13]崔素萍,郭红霞,王子明,等.纳米无定形C-S-H凝胶颗粒及其结构表征[J].硅酸盐通报,2012,31(3):531-534.
[14]谢燕,吴笑梅,樊粤明,等.内掺氯离子对钢筋锈蚀的影响及不同材料对氯离子的固化[J].华南理工大学学报(自然科学版),2009,37(8):132-139.
[15]王绍东,黄镔,王智.水泥组分对混凝土结合氯离子能力的影响[J].硅酸盐学报,2000,28(6):570-574.
[16]于本田,王起才,周立霞,等.矿物掺合料与水胶比对混凝土耐久性的影响研究[J].硅酸盐通报,2012,31(2):391-395.
[17]金祖权,孙伟,赵铁军,等.在不同溶液中混凝土对氯离子的固化程度[J].硅酸盐学报,2009,37(7):1068-1072.
[18]Csizmadia J G.Balázs,Tamás F D.Chloride ion binding capacity of aluminoferrites[J].Cement and Concrete Research,2001,31(4):577-588.
[19]Saikia N,Kato S,Kojima T.Thermogravimetric investigation on the chloride binding behaviour of MK-lime paste[J].Thermochimica Acta,2006,444(1):16-25.
[20]廉慧珍,童良,陈思义.建筑材料物相研究基础[M].北京:清华大学出版社,1996.
[2]罗睿,蔡跃波,王昌义.磨细矿渣净浆和砂浆结合外渗氯离子的性能[J].建筑材料学报,2001,4(2):148-153.
[3]Thomas M D A,Hooton R D,Scott A,et al.The effect of supplementary cementitious materials on chloride binding in hardened cement paste[J].Cement and Concrete Research,2012,42:1-7.
[4]Yuan Q,Shi C J,Geert D S,et al.Chloride binding of cement-based materials subjected to external chloride environment-A review[J].Construction and Building Materials,2009,23:1-3.
[5]曹青,谭克锋,袁伟.矿物掺合料对水泥基材料氯离子固化能力影响的研究[J].四川建筑科学研究,2009,35(3):189-192.
[6]高祥彪,钱春香,钱桂枫,等.复掺粉煤灰与矿渣微粉对高强混凝土力学性能的影响[J].21世纪建筑材料,2010,2(2):10-13.
[7]陈正,杨绿峰,王焱,等.复合外掺料高性能混凝土的氯离子扩散性能[J].广西大学学报,2010,35(6):908-913.
[8]陈琳,潘如意,沈晓冬,等.粉煤灰-矿渣-水泥复合胶凝材料强度和水化性能[J].建筑材料学报,2010,13(6):380-384.
[9]Ipavec A.Chloride binding into hydrated blended cements:The influence of limestone and alkalinity[J].Cement and Concrete Research,2013,48(0):74-85.
[10]Berndt M L.Properties of sustainable concrete containing fly ash,slag and recycled concrete aggregate[J].Construction and Building Materials,2009,23(7):2606-2613.
[11]王晓刚,史才军,何富强,等.氯离子结合及其对水泥基材料微观结构的影响[J].硅酸盐学报,2013,41(2):187-198.
[12]罗睿,蔡跃波,王昌义,等.磨细矿渣抗氯离子侵蚀性能的机理研究[J].土木工程学报,2002,35(6):100-104.
[13]崔素萍,郭红霞,王子明,等.纳米无定形C-S-H凝胶颗粒及其结构表征[J].硅酸盐通报,2012,31(3):531-534.
[14]谢燕,吴笑梅,樊粤明,等.内掺氯离子对钢筋锈蚀的影响及不同材料对氯离子的固化[J].华南理工大学学报(自然科学版),2009,37(8):132-139.
[15]王绍东,黄镔,王智.水泥组分对混凝土结合氯离子能力的影响[J].硅酸盐学报,2000,28(6):570-574.
[16]于本田,王起才,周立霞,等.矿物掺合料与水胶比对混凝土耐久性的影响研究[J].硅酸盐通报,2012,31(2):391-395.
[17]金祖权,孙伟,赵铁军,等.在不同溶液中混凝土对氯离子的固化程度[J].硅酸盐学报,2009,37(7):1068-1072.
[18]Csizmadia J G.Balázs,Tamás F D.Chloride ion binding capacity of aluminoferrites[J].Cement and Concrete Research,2001,31(4):577-588.
[19]Saikia N,Kato S,Kojima T.Thermogravimetric investigation on the chloride binding behaviour of MK-lime paste[J].Thermochimica Acta,2006,444(1):16-25.
[20]廉慧珍,童良,陈思义.建筑材料物相研究基础[M].北京:清华大学出版社,1996.