摘要
研究了丁苯乳液对钢纤维混凝土抗冻性及微观结构的影响。结果表明:丁苯乳液能减少钢纤维混凝土冻融过程中的质量损失,降低相对动弹性模量的下降速度,不仅提高了钢纤维混凝土冻融前的抗折强度,同时对150次冻融循环后的抗折强度损失有较强的抑制作用;丁苯乳液能够改善孔隙结构及钢纤维与基体界面区形貌,避免薄弱面的产生,增强基体与钢纤维的粘结性,从而提高抗冻性。
Effect of styrene-butadiene latex on the frost resistance and microstructure of steel fiber reinforced concrete were studied. The results show that styrene-butadiene latex can reduce the loss of mass and relative dynamic modulus of elasticity,styrene-butadiene latex not only can improve the flexural strength, but also can reduce the loss rate of flexural strength after 150 freeze-thaw cycles. Styrene- butadiene latex can improve the frost resistance by ameliorating the pore structure and interface between steel fiber and matrix, avoiding the weak side and reinforcing the adhesiveness of matrix.
出处
《四川建筑科学研究》
北大核心
2017年第2期103-106,共4页
Sichuan Building Science
基金
黑龙江交通厅重点科技项目(2015WJ011A03)
关键词
丁苯乳液
钢纤维混凝土
抗冻性
微观结构
styrene-butadiene latex
steel fiber reinforced concrete
frost resistance
microstructure
