摘要
探讨了粗骨料粒径和级配对混凝土力学性能的影响。首先,分析粗骨料的基本物理性能,包括密度、吸水率、强度、颗粒形状、粒径分布和耐久性。其次,针对再生混凝土的配合比设计进行了研究。结果表明,粗骨料粒径对混凝土坍落度和强度产生影响,较大的粒径会降低混凝土的坍落度但提高强度,而较小的粒径则相反。最后,讨论了粗骨料级配对混凝土力学性能影响。
The effects of coarse aggregate size and grade on the mechanical properties of concrete are discussed.First,the basic physical properties of the coarse aggregate are analyzed,including density,water absorption,strength,particle shape,particle size distribution,and durability.Secondly,the design of mix ratio of recycled concrete is studied.The results show that the coarse aggregate particle size has an effect on the slump and strength of concrete.The larger particle size will reduce the slump but increase the strength of concrete,while the smaller particle size will do the opposite.Finally,the influence of coarse aggregate grade on the mechanical properties of concrete is discussed.
作者
李忠辉
王法雁
申云龙
陈伟恩
赵远盛
LI Zhong-hui;WANG Fa-yan;SHEN Yun-long;CHEN Wei-en;ZHAO Yuan-sheng(The First Construction Engineering Company Ltd.of China Construction Second Engineering Bureau,Beijing 100176,China)
出处
《工程建设与设计》
2024年第18期131-133,共3页
Construction & Design for Engineering
关键词
粗骨料粒径
粗骨料级配
坍落度
混凝土力学性能
coarse aggregate size
coarse aggregate grading
slump
mechanical properties of concrete
