微粒混凝土力学性能影响因素及调整方法的试验研究  

Experimental study on the influencing factors and adjustment methods for the mechanical properties of microconcrete

作　　者：刘畅 郝玮 孙巧珍 张宏 田春雨 高杰 曹进哲 Liu Chang;Hao Wei;Sun Qiaozhen;Zhang Hong;Tian Chunyu;Gao Jie;Cao Jinzhe(State Key Laboratory of Building Safety and Environment,Beijing 100013,China;China Academy of Building Research,Beijing 100013,China)

机构地区：[1]建筑安全与环境国家重点实验室,北京100013 [2]中国建筑科学研究院有限公司,北京100013

出　　处：《建筑科学》2021年第5期92-98,共7页Building Science

摘　　要：振动台试验是高层及复杂结构抗震性能研究的一种重要手段。微粒混凝土是振动台试验模型中用来模拟混凝土的一种基本材料,其性能直接影响振动台试验结果的准确性。本文通过17组不同配比微粒混凝土试块的力学性能试验,研究了水灰比、灰砂比、砂的级配、外加剂等因素对其力学性能关键指标(弹性模量、抗压强度)的影响,并结合试验结果提出了调整配比的方法,研究结果可为振动台试验模型用微粒混凝土的试配提供指导。The shaking table test is an important method to study the seismic performance of high-rise and complex structures.Microconcrete is a basic material used to simulate concrete in shaking table test model,whose properties directly affect the accuracy of the results of shaking table test.In this paper,the mechanical properties of 17 batches of concrete test block with different mixing ratios are tested,the influences of water-cement ratio,cement-sand ratio,sand gradation,additives and other factors on the key indexes of mechanical properties(elastic modulus,strength)are analyzed,and a method of mixing ratio adjustment based on the test results is put forward.The findings of this paper may offer reference on trial mixes of microconcrete used in shaking table test model.

关 键 词：微粒混凝土 弹性模量 抗压强度 调整方法 

分 类 号：TU502.6[建筑科学—建筑技术科学]