环氧树脂对混凝土抗盐冻能力的影响研究
|
摘要
采用快速盐冻法研究环氧树脂对提升混凝土抗盐冻能力的影响规律,以外观变化、质量损失率、相对动弹性模量变化及抗压、抗折强度损失率为检验指标,分别对普通水泥混凝土、环氧树脂涂层混凝土、环氧树脂水泥混凝土进行盐冻试验。结果表明:环氧树脂水泥混凝土的抗盐冻能力最强;综合考虑混凝土的抗盐冻能力与经济因素,环氧树脂掺量为10%时最佳。
The law of salt freezing resistance of concrete under the effect of epoxy resin by quick freeing and thawing test in salt solution. The test indexes include appearance change,quality loss rate,relative dynamic modulus of elasticity change,compressive and flexural strength loss rate. Salt scaling tests were carried out on ordinary cement concrete,epoxy resin coated concrete and epoxy resin cement concrete respectively. The results show that epoxy resin cement concrete has the strongest salt scaling resistance.Considering the salt scaling resistance and economic factors of concrete,the best content of epoxy resin is 10%.
The law of salt freezing resistance of concrete under the effect of epoxy resin by quick freeing and thawing test in salt solution. The test indexes include appearance change,quality loss rate,relative dynamic modulus of elasticity change,compressive and flexural strength loss rate. Salt scaling tests were carried out on ordinary cement concrete,epoxy resin coated concrete and epoxy resin cement concrete respectively. The results show that epoxy resin cement concrete has the strongest salt scaling resistance.Considering the salt scaling resistance and economic factors of concrete,the best content of epoxy resin is 10%.
引文
[1]李隽,高培伟,刘宏伟,等.盐冻对混凝土力学性能影响试验研究[J].混凝土,2014(10):8-11.
[2]孙丛涛,牛获涛.盐冻环境混凝土氯离子扩散性能试验研究[J].硅酸盐通报,2014,33(8):1863-1869.
[3]刘林,刘坤岩.除冰盐对混凝土路面剥蚀破坏机理及预防措施的研究[J].中外公路,2010,30(5):122-126.
[4]万小梅,张同波,赵铁军,等.盐冻环境下混凝土的微结构和氯离子渗透性[J].建筑材料学报,2015,18(4):633-639.
[5]Ii J J V,Scherer G W.A review of salt scaling:I.Phenomenology[J].Cement&Concrete Research,2007,37(7):1007-1021.
[6]杨全兵.混凝土盐冻破坏机理(Ⅰ)--毛细管饱水度和结冰压[J].建筑材料学报,2007(5):522-527.
[7]杨全兵.混凝土盐冻破坏机理(Ⅱ):盐冻饱水度和结冰压[J].建筑材料学报,2012,15(6):741-746.
[8]万小梅,张同波,赵铁军,等.盐冻环境下混凝土的微结构和氯离子渗透性[J].建筑材料学报,2015,18(4):633-639.
[9]王培铭,赵国荣,张国防.聚合物水泥混凝土的微观结构的研究进展[J].硅酸盐学报,2014,42(5):653-660.
[10]孙丛涛,康莉萍,赵霞,等.混凝土涂层的抗渗性能[J].硅酸盐通报,2016,35(5):1378-1384.
[11]Buenfeld N R,Zhang J Z.Chloride diffusion through surface-treated mortar specimens-corrosion and corrosion protection of steel in concrete[J].Cement&Concrete Research,1998,28(28):665-674.
[12]GB/T 50082-2009,普通混凝土长期性能和耐久性能试验方法标准[S].
[2]孙丛涛,牛获涛.盐冻环境混凝土氯离子扩散性能试验研究[J].硅酸盐通报,2014,33(8):1863-1869.
[3]刘林,刘坤岩.除冰盐对混凝土路面剥蚀破坏机理及预防措施的研究[J].中外公路,2010,30(5):122-126.
[4]万小梅,张同波,赵铁军,等.盐冻环境下混凝土的微结构和氯离子渗透性[J].建筑材料学报,2015,18(4):633-639.
[5]Ii J J V,Scherer G W.A review of salt scaling:I.Phenomenology[J].Cement&Concrete Research,2007,37(7):1007-1021.
[6]杨全兵.混凝土盐冻破坏机理(Ⅰ)--毛细管饱水度和结冰压[J].建筑材料学报,2007(5):522-527.
[7]杨全兵.混凝土盐冻破坏机理(Ⅱ):盐冻饱水度和结冰压[J].建筑材料学报,2012,15(6):741-746.
[8]万小梅,张同波,赵铁军,等.盐冻环境下混凝土的微结构和氯离子渗透性[J].建筑材料学报,2015,18(4):633-639.
[9]王培铭,赵国荣,张国防.聚合物水泥混凝土的微观结构的研究进展[J].硅酸盐学报,2014,42(5):653-660.
[10]孙丛涛,康莉萍,赵霞,等.混凝土涂层的抗渗性能[J].硅酸盐通报,2016,35(5):1378-1384.
[11]Buenfeld N R,Zhang J Z.Chloride diffusion through surface-treated mortar specimens-corrosion and corrosion protection of steel in concrete[J].Cement&Concrete Research,1998,28(28):665-674.
[12]GB/T 50082-2009,普通混凝土长期性能和耐久性能试验方法标准[S].