不同击实功对废砖骨料粒径的变化影响  

Effect of Compaction on the Particle Size Change of Waste Brick Aggregate

作　　者：席丹妮 刘之葵[1] 李善梅[1] 倪喆 谭明灿 曹贤发[1] XI Danni;LIU Zhikui;LI Shanmei;NI Zhe;TAN Mingcan;CAO Xianfa(College of Civil and Architectural Engineering, Guilin University of Technology, Guilin, Guangxi 541004,China)

机构地区：[1]桂林理工大学土木与建筑工程学院,广西桂林541004

出　　处：《公路工程》2022年第1期96-101,共6页Highway Engineering

基　　金：国家自然科学基金项目(41867039);广西自然科学基金项目(2018GXNSFAA138139,2017GXNSFAA198238);广西高等学校高水平创新团队及卓越学者计划项目(桂教人201738-2);广西建筑与节能重点实验室项目(17-J-21-5);南方石山地区矿山地质环境修复工程技术创新中心项目(CXZX120201002)。

摘　　要：以建筑垃圾废旧砖为原材料,进行击实试验,分析不同击实功条件下,废弃砖骨料工程性质的变化规律。研究代替天然骨料作为路基填料的可行性。对废弃砖进行破碎;采用颗粒筛分试验使用标准筛进行筛分;采用击实试验,分析不同直径粒组在不同击实功的百分率变化。试验结果表明:废旧砖骨料随着击实功的增加,各粒组颗粒的百分率随着粒组直径的减小而逐渐趋向平稳,而直径最小的粒组无太大变化。The waste brick of construction waste is used as the raw material,and the compaction test is carried out to analyze the change rule of engineering properties of waste brick aggregate under different compaction work conditions,to study the feasibility of replacing natural aggregate as sub-grade filler.The waste bricks were crushed,then,the particle sieving experiment with the standard sieve was conducted,and finally,the compaction experiment was adopted to analyze the percentage change of different compaction work of different diameter granule groups.The experimental results show that with the increase of compaction work,the percentage of each particle group gradually tends to be stable with the decrease of particle group diameter,while the particle group with the smallest diameter does not change much.

关 键 词：建筑垃圾废旧砖 路基填料 击实功 粒组 

分 类 号：U414[交通运输工程—道路与铁道工程]