摘要
测试再生粗骨料取代率分别为0、25%、50%、75%、100%的新拌再生混凝土的坍落度、表观密度及相应再生混凝土立方体抗压强度.结果表明:再生混凝土的坍落度和表观密度都随再生粗骨料取代率的增加而下降;立方体抗压强度变化相对较为复杂且具有一定的离散性,建议在拌制再生混凝土前要对骨料作适当处理以改善再生骨料的基本性能.
The slump and the bulk density of the recycled concrete were tested, and their recycled coarse aggregate replaceing ratios were 0, 25% , 50% , 75% , and 100%. The corresponding compressive strength of the concrete cub was tested. Results showed that both the slump and the bulk density of the fresh recycled concrete decreased with the increase of the proportion of recycled coarse aggregates. The compressive strengths of the recycled concrete cub were sophiscated and discrete. Some suggestions were provided for improving the basic properties of the recycled concrete, such as the aggregate preprocess.
出处
《南京工业大学学报（自然科学版）》
CAS
北大核心
2010年第2期58-61,共4页
Journal of Nanjing Tech University(Natural Science Edition)
基金
江苏省防灾减灾重点实验室基金资助项目(JSCE0705)
关键词
再生混凝土
再生粗骨料
坍落度
表观密度
立方体抗压强度
recycled concrete
recycled coarse aggregate
slump
bulk density
cubic compressive strength
