摘要
为研究风积沙在交通运输、土木工程等基础设施建设中应用的可行性,对新疆塔克拉玛干、古尔班通古特和内蒙古腾格里沙漠地区风积沙的元素组成、微观形貌、表面特性、粒度分布、孔隙性及抗剪性能进行了深入研究。结果表明:不同地区风积沙的材料特性存在一定的差异;通过抗剪实验发现,风积沙内摩擦角随含水率的变化并不明显,内摩擦角约为32°~42°时,随干密度的增大而增大,但均小于标准砂的内摩擦角,主要原因是集料的粒径配合比对内摩擦角的影响较大。最终得出风积沙可作为良好的建筑材料来应用。
To study the feasibility of the application of aeolian sand in transportation,civilengineering and other infrastructure constructions,the elemental composition,micro-morphology,surface characteristics,particle size distribution,porosity and shear resistance of the aeolian sand were detail studied in the desert of Xinjiang Taklimakan,Xinjiang Gurbantonggut and Inner Mongolia Tengger.The results show that there are certain differences in the material properties of aeolian sand in different regions.The internal friction angle of aeolian sand,from 32°to 42°,does not change significantly due to different water content.The internal friction angle increases with the increase of dry density,but smaller than the internal friction angle of standard sand.The main reason is that the particle size mix ratio of the aggregate has a greater influence on the internal friction angle.Finally,it is concluded that aeolian sand can be used as a good building material.
作者
郑木莲
王倩倩
陈旺
高源
张姝
朱琳琳
ZHENG Mulian;WANG Qianqian;CHEN Wang;GAO Yuan;ZHANG Shu;ZHU Linlin(Key Laboratory for Special Region Highway Engineering of Ministry of Education, Chang’an University, Xi’an 710064, China)
出处
《中国科技论文》
CAS
北大核心
2021年第4期415-421,共7页
China Sciencepaper
基金
国家自然科学基金资助项目(52078051)。
关键词
建筑材料
风积沙
粒度分布
X射线荧光
扫描电子显微镜
抗剪性能
building materials
aeolian sand
particle size distribution
X-ray fluorescence(XRF)
scanning electron microscope(SEM)
shear resistance
