硅酸盐学报Issue(11)：1507-1513,7.DOI:10.7521/j.issn.0454-5648.2013.11.08
水对水泥乳化沥青砂浆动态力学性能的影响
Effect of Water on Dynamic Mechanical Properties of Cement Emulsified Asphalt Mortar
摘要
Abstract
The mortar specimens with a mass ratio of asphalt/cement as 0.3 were prepared with anion emulsified asphalt. After being saturated by water in the vacuum chamber, these mortar specimens in a constant humidity dryer were dried to certain mois-ture contents, respectively. The fatigue test was carried on the reference specimen and specimens with different saturation values by MTS 810 fatigue machine. Effect of water on the dynamic mechanical properties of cement emulsified asphalt mortar was in-vestigated. The results show that the ultimate fatigue strength of the suction specimens decreases, compared to the reference specimen. The strain under a certain stress range increases with the increase of cycle number due to the dynamic viscoelastic be-havior of asphalt in the specimens for both reference and suction specimens. The vertical fatigue cracks appear in the reference specimen, meaning the splitting failure, but the sloping cracks appear in most various saturation specimens, reflecting the shear failure due to the shear effect of excess pore pressure on the surrounding structure produced by a dynamic load at a high fre-quency.关键词
水泥乳化沥青砂浆/饱水度/动态力学性能/极限疲劳强度/破坏模式Key words
cement emulsified asphalt mortar/moisture content/dynamic mechanical property/ultimate fatigue strength/failure model分类
建筑与水利引用本文复制引用
田冬梅,邓德华,田青,潘云瑞,唐斯..水对水泥乳化沥青砂浆动态力学性能的影响[J].硅酸盐学报,2013,(11):1507-1513,7.基金项目
国家自然科学基金(50878209)；国家“973”计划(2013CB036200)资助项目。 （50878209）
