摘要
粉细砂作为一种工程性质不良的筑堤材料,一般不能直接应用于工程中,若不得不采用粉细砂时,必须采用合理有效的工程措施,通过掺加改性材料来改善粉细砂的工程性质。为了研究不同改性材料对粉细砂抗剪强度的影响规律,本文设计了掺配黏土、水泥、石粉的粉细砂室内改性试验。试验结果表明,通过掺加这几种常见的改性材料,粉细砂的抗剪强度指标均得到了不同程度的提高,对比三种改性材料的改性效果及实际施工质量的控制,建议优选水泥作为改性材料。
Silty-fine sand is generally not directly used in engineering due to its poor engineering properties as a construction material.If silty-fine sand must be used,reasonable and effective engineering measures must be taken to improve its engineering properties by adding modified materials.In order to study the influence of different modified materials on the shear strength of silty-fine sand,this paper designs indoor modification experiments by adding clay,cement and stone powder to silty-fine sand.The experimental results show that the shear strength indicators of silty-fine sand are improved to varying degrees by adding these commonly used modified materials.Comparing the modification effects of the three materials and controlling the actual construction quality,it is recommended to choose cement as the modified material.
作者
曹卫东
CAO Weidong(Shenyang Xingyu Water Conservancy Construction Engineering Quality Inspection Co.,Ltd.,Shenyang 110006,China)
出处
《水利建设与管理》
2023年第6期35-39,共5页
Water Conservancy Construction and Management
关键词
粉细砂
改性试验
黏土
水泥
石粉
抗剪强度
silty-fine sand
modification test
clay
cement
stone powder
shear strength
