粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2015NO.2 试验与应用 建筑垃圾低强度CFG桩桩身材料性质试验研究* Experimental Study on Material Properties of Construction Waste Low-strength CFG Pile 李天,姜裕华2,王殿宽2,陈甦 (1.苏州大学城市轨道交通学院,江苏苏州215131;2.苏州市市政建设管理处,江苏苏州215002) 摘要:对建筑垃圾(废混凝土)再生骨料的基本物理力学性质和不同配合比的建筑垃圾低强度(≤C7.5)CFG桩 桩身材料试件强度进行了试验研究,结果表明:(1)建筑垃圾再生骨料可满足作为低强度CFG桩桩身材料的骨料要求; (2)建筑垃圾低强度CFG桩柱身材料早期强度较低,但28-90d龄期内的后期强度仍有一定增长;(3)建筑垃圾低强度 CFG桩桩身材料中的粉煤灰掺量和粉煤灰取代水泥率可适当加大;(4)32.5复合硅酸盐水泥可用于强度等级小于C7.5 的建筑垃圾CFG桩桩身材料中. 关键词:建筑垃圾:CFG桩;配合比;材料性质 中图分类号:TU473.1 文献标识码:A 文章编号:1005-8249(2015)02-0019-04 Li Tian' Jiang Yuhua2 Wang Diankuan2 Chen Su' (1.School of Urban Rail Transportation Soochow University Suzhou Jiangsu 215131 China; 2.Suzhou Municipal Construction Administration Department Suzhou Jiangsu 215002 China) Abstract:The basic physical and mechanical properties of the recycled aggregate from the construction waste concrete)and the material strength of the construction waste low-strength(≤C7.S)CFG piles with different mix proportions have been tested in the laboratory The result shows:(1)The recycled aggregate is qualified to be the material of the low-strength CFG pile;(2)the early strength of the construction waste low -strength ...
建筑垃圾低强度CFG桩桩身材料性质试验研究.pdf
