可再分散乳胶粉与硅灰改性水泥基透水混凝土性能对比研究
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摘要
采用硅灰和可再分散乳胶粉对透水混凝土进行改性,研究了两者对透水混凝土浆体扩展度、力学性能、透水性能和抗冻性能的影响。结果表明,硅灰会提高浆体的黏度、降低浆体的扩展度,提高透水混凝土的力学性能和抗冻性能,但会降低其透水性能,脆性增大,推荐硅灰掺量为2%～4%;可再分散乳胶粉会改变浆体黏度,调节透水混凝土浆体的工作状态,降低透水混凝土强度,改善透水混凝土的脆性,推荐可再分散乳胶粉的掺量为2%～4%,可以获得较好的综合性能。
The effects of silica fume and redispersible polymer powder on the slurry expansion, mechanical properties,water permeability and freezing resistance of permeable concrete were studied. The experiment results show silica fume can increase the viscosity of the slurry, reduce the expansion of the slurry, improve the mechanical properties and frost resistance of the permeable concrete; but may decrease the permeability and increase the brittleness of the permeable concrete.Recommended content of silica fume for using in permeable concrete is in the range of 2% to 4%. The air-entraining effect and surfactant composition of latex powder can change the viscosity of the slurry and adjust the working state of the permeable concrete, will result in the decrease of the strength of the permeable concrete, but can improve the brittle failure characteristics of the permeable concrete. The recommended amount of latex powder for using in permeable concrete is in the range of 2% to 4%, and the better comprehensive performance can be obtained.
The effects of silica fume and redispersible polymer powder on the slurry expansion, mechanical properties,water permeability and freezing resistance of permeable concrete were studied. The experiment results show silica fume can increase the viscosity of the slurry, reduce the expansion of the slurry, improve the mechanical properties and frost resistance of the permeable concrete; but may decrease the permeability and increase the brittleness of the permeable concrete.Recommended content of silica fume for using in permeable concrete is in the range of 2% to 4%. The air-entraining effect and surfactant composition of latex powder can change the viscosity of the slurry and adjust the working state of the permeable concrete, will result in the decrease of the strength of the permeable concrete, but can improve the brittle failure characteristics of the permeable concrete. The recommended amount of latex powder for using in permeable concrete is in the range of 2% to 4%, and the better comprehensive performance can be obtained.
引文
[1]宋中南,石云兴.透水混凝土及其应用技术[M].北京:中国建筑工业出版社,2011.
[2]陈国华,鲁晓辉,张勇,等.C30透水混凝土配制试验研究[J].混凝土与水泥制品,2018(5):6-9.
[3] Yang J, Jiang G. Experimental study of pervious concrete pavement materials[J]. Cement and Concrete Research,2003,33(3):381-386.
[4] Huang B, Wu H, Shu X, et al. Laboratory evaluation of permeability and strength of polymer-modified pervious concrete[J]. Construction and Building Materials, 2010,24(5):818-823.
[5]姜健,金怡,陈元元.无砂透水混凝土透水新影响因素分析研究[J].混凝土,2008(8):91-92.
[6]程娟,郭向阳.粉煤灰和矿粉对透水混凝土性能的影响[J].建筑砌块与砌块建筑,2007(5):27-30.
[7] Yang J,Jiang G.Experimental study on properties of pervious concrete pavement materials[J].Cement&concrete Research,2003,33(3):381-386.
[8]付放华,朱祥,刘小兵,等.生态型透水混凝土的试验研究[J].混凝土.2012(6):13-16.
[9]徐方,朱婧,陈建平,等.矿物掺合料对聚合物改性多孔水泥混凝土的性能影响研究[J].混凝土,2012(4):41-44.
[10]万炜.透水性生态混凝土的制备及抗冻性研究[D].镇江:江苏大学,2006.
[11]蒋友新.环氧树脂改性透水混凝土的试验研究[J].路基工程,2007(6):9-10.
[12]史林.通用型可再分散乳胶粉对砂浆性能的影响[J].混凝土与水泥制品,2011(10):44-47.
[13] Rafat S. Utilization of silica fume in concrete:Review of hardened properties. Resources, Conservation and Recycling[J],2011,55,923-932.
[14]杨萍,彭振斌.桂芬在混凝土中的应用探讨[J].混凝土,2002(1):11-14.
[15]王培铭,张国防,吴建国.聚合物干粉对水泥砂浆的减水和保水作用[J].新型建筑材料,2003(3):25-28.
[16]张义顺,单玉香,朱伶俐.聚合物对防水干粉砂浆性能的影响[J].混凝土,2007(10):74-76.
[17]赵鑫海,华腾飞,马晓杰,等.可分散乳胶粉对混凝土结构修补砂浆的性能影响研究[J].混凝土,2015(5):121-123.
[2]陈国华,鲁晓辉,张勇,等.C30透水混凝土配制试验研究[J].混凝土与水泥制品,2018(5):6-9.
[3] Yang J, Jiang G. Experimental study of pervious concrete pavement materials[J]. Cement and Concrete Research,2003,33(3):381-386.
[4] Huang B, Wu H, Shu X, et al. Laboratory evaluation of permeability and strength of polymer-modified pervious concrete[J]. Construction and Building Materials, 2010,24(5):818-823.
[5]姜健,金怡,陈元元.无砂透水混凝土透水新影响因素分析研究[J].混凝土,2008(8):91-92.
[6]程娟,郭向阳.粉煤灰和矿粉对透水混凝土性能的影响[J].建筑砌块与砌块建筑,2007(5):27-30.
[7] Yang J,Jiang G.Experimental study on properties of pervious concrete pavement materials[J].Cement&concrete Research,2003,33(3):381-386.
[8]付放华,朱祥,刘小兵,等.生态型透水混凝土的试验研究[J].混凝土.2012(6):13-16.
[9]徐方,朱婧,陈建平,等.矿物掺合料对聚合物改性多孔水泥混凝土的性能影响研究[J].混凝土,2012(4):41-44.
[10]万炜.透水性生态混凝土的制备及抗冻性研究[D].镇江:江苏大学,2006.
[11]蒋友新.环氧树脂改性透水混凝土的试验研究[J].路基工程,2007(6):9-10.
[12]史林.通用型可再分散乳胶粉对砂浆性能的影响[J].混凝土与水泥制品,2011(10):44-47.
[13] Rafat S. Utilization of silica fume in concrete:Review of hardened properties. Resources, Conservation and Recycling[J],2011,55,923-932.
[14]杨萍,彭振斌.桂芬在混凝土中的应用探讨[J].混凝土,2002(1):11-14.
[15]王培铭,张国防,吴建国.聚合物干粉对水泥砂浆的减水和保水作用[J].新型建筑材料,2003(3):25-28.
[16]张义顺,单玉香,朱伶俐.聚合物对防水干粉砂浆性能的影响[J].混凝土,2007(10):74-76.
[17]赵鑫海,华腾飞,马晓杰,等.可分散乳胶粉对混凝土结构修补砂浆的性能影响研究[J].混凝土,2015(5):121-123.