摘要
基于全计算法配合比设计方法设计了再生细骨料自密实混凝土的配合比。通过研究其工作性能,在满足工作性能的情况下,确定最终配合比,并对力学性能进行了测试。试验结果表明,通过合理调整砂率和外加剂的用量,能够利用建筑垃圾再生细骨料制备出满足要求的自密实混凝土;短龄期的再生细骨料自密实混凝土的抗压强度和劈裂抗拉强度要低于普通天然砂自密实混凝土,但经过长龄期标准养护后,再生细骨料自密实混凝土的强度和强度增长率均有提高。在90 d龄期下,再生细骨料自密实混凝土基本接近普通混凝土。
The mix design method of recycled fine aggregate self-compacting concrete was designed based on the full calculation method.By studying its working performance,the final mix proportion was determined while meeting the working performance requirements,and the mechanical properties were tested.The experimental results indicate that by adjusting the sand ratio and the dosage of additives reasonably,self-compacting concrete that meets the requirements can be prepared by using construction waste to regenerate fine aggregates.Short age recycled fine aggregate self-compacting concrete has lower compressive strength and splitting tensile strength than ordinary natural sand self-compacting concrete.However,after long-term standard curing,the strength and strength growth rate of recycled fine aggregate self-compacting concrete have improved.At the age of 90 days,recycled fine aggregate self-compacting concrete is basically close to ordinary concrete.
作者
张少峰
杨凯
郭俊珍
马颉
Zhang Shaofeng;Yang Kai;Guo Junzhen;Ma Jie(Inner Mongolia Autonomous Region Housing and Urban Rural Construction Green Research and Development Center,Hohhot Inner Mongolia 010050,China;Xingtai Construction Group Co.,Ltd.,Hohhot Inner Mongolia 010050,China)
出处
《山西建筑》
2024年第8期111-113,共3页
Shanxi Architecture
基金
内蒙古自治区住房和城乡建设厅建筑工业化低碳技术推广应用暨建筑垃圾工程项目源头减量化和就地资源化利用研究课题
粒化高炉矿渣细骨料混凝土关键技术研究及工程应用示范(2023YFHH0116)。
关键词
再生细骨料
自密实混凝土
配合比设计
工作性能
力学性能
recycled fine aggregate
self-compacting concrete
mix design
working performance
mechanical properties
作者简介
张少峰(1964-),男,硕士,正高级经济师,从事工业固废资源化利用、绿色建材、绿色建造技术、建筑工业化绿色发展等方面的管理与研究工作。
