多粒级粗骨料级配对粉煤灰陶粒混凝土性能影响研究  

Effect of multi-level coarse aggregate gradation on the performance of fly ash ceramsite concrete

作　　者：赵飞洋 乔思皓 解培睿 吴绍奇 郝瑞卿 廖霖[1] ZHAO Feiyang;QIAO Sihao;XIE Peirui;WU Shaoqi;HAO Ruiqin;LIAO Lin(College ofMining Enginering,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]太原理工大学矿业工程学院,山西太原030024

出　　处：《混凝土》2022年第8期60-66,共7页Concrete

基　　金：国家自然科学基金(51604183);山西省青年科技研究基金(201703D1110207,201901D211109);山西省回国留学人员科研资助项目(2021-041);中国博士后科学基金面上资助项目(2020M670697)。

摘　　要：为解决单粒级粉煤灰陶粒混凝土抗压强度低且和易性较差的问题,探究多粒级粗骨料级配对粉煤灰陶粒混凝土性能的影响,采用紧密堆积理论指导的多种连续级配和间断级配理论进行陶粒混凝土多级配设计,并进行强度及流动性试验,对其破坏形态及破坏原因进行了合理分析,通过关联级配和包裹骨料的水泥浆与水泥浆总体积之比,探究了粉煤灰陶粒混凝土抗压强度与其级配选择的理论联系,就粉煤灰陶粒混凝土的连续级配和间断级配设计,提出了相应的结论和建议。In order to solve the problem of low compressive strength and poor workability of single size fly ash ceramsite concrete,and to explore the influence of multi-level coarse aggregate gradation on the performance of fly ash ceramsite concrete,the multi-stage mix design of ceramsite concrete was carried out by using multiple continuous grading and discontinuous grading theories guided by the packing theory,both strength and fluidity tests were carried out.It makes a reasonable analysis of fly ash ceramsite concrete on its failure forms and causes,explores the theoretical relationship between the compressive strength of fly ash ceramsite concrete and its gradation selection through the correlation gradation and the ratio of cement slurry to the total volume of cement slurry wrapping aggregate,and puts forward corresponding conclusions and suggestions on the design of continuous gradation and discontinuous gradation of fly ash ceramsite concrete.

关 键 词：多粒级级配 粉煤灰陶粒 级配设计 粗骨料 轻骨料混凝土 

分 类 号：TU528.041[建筑科学—建筑技术科学]