摘要
为研究建筑垃圾对膨胀土的改良效果,将建筑垃圾粉碎筛选后,按照一定级配与掺比组合,进行室内试验,分析改良后土体力学性能,并结合混合料增强土体强度作用机理分析进行分析。得到结论:建筑垃圾经过粉碎筛选后掺入膨胀土中可以改良膨胀土特性,提升土体力学性能。在掺量达到40%时,五种试验方案的改良土均达到最优效果,同时膨胀量也最小。建筑垃圾改良膨胀土主要由于骨粒与土体间摩擦咬合作用,属于物理改良方法,在掺入量达到40%时达到最优效果。建筑垃圾对膨胀土的改良由建筑垃圾骨料的掺入比例以及粒径决定。
In order to study the improvement effect of construction waste on expansive soil,the construction waste was crushed and screened,and laboratory tests were carried out according to certain gradation and mixing ratio combination to analyze the physical properties of the improved soil and the mechanism of enhancing soil strength with the mixture.It is concluded that the construction waste mixed into expansive soil after grinding and screening can improve the characteristics of expansive soil and enhance the mechanical properties of soil.When the dosage is up to 40%,the improved soil of the five test schemes achieves the optimal effect and the expansion amount is also the minimum.The improvement of expansive soil by construction waste is mainly due to frictional bite between bone particles and soil,which is a physical improvement method,and the optimal effect can be achieved when the addition amount reaches 40%.The improvement of expansive soil by construction waste is determined by the incorporation ratio and particle size of construction waste aggregate.
作者
许凤荣
XU Feng-rong(Qinhuangdao Haigang District Education and Sports Bureau,Qinhuangdao 066008)
出处
《河北建筑工程学院学报》
CAS
2022年第4期72-77,92,共7页
Journal of Hebei Institute of Architecture and Civil Engineering
关键词
膨胀土
建筑垃圾
筛分
级配
Expansive soil
Construction waste
Screening
Grading
作者简介
许凤荣(1963-),女,高级工程师,从事施工技术与管理相关研究。
