摘要
文章以双洮公路沿线碳酸盐渍土为研究对象,采用恒温箱和压力机测量碳酸盐渍土的冻融循坏耐久性。对盐渍土掺入2%、4%、6%的硅微粉进行改良,将试样分别进行0、3、5、7、10次冻融循环,通过无侧限抗压试验测量其冻融循坏耐久性。经试验研究,试样在经过5次冻融循环之后强度衰减程度基本平稳,普通盐渍土试样强度衰减71.22%,掺加硅微粉试样强度衰减约10%,硅微粉对盐渍土耐久性提升幅度较高。
In this paper,the carbonated soil along the Shuangtao highway is taken as the research object,and the freeze-thaw cycle durability of the carbonated soil is measured by constant temperature box and press.The saline soil was improved by adding 2%,4%and 6%silica powder.The samples were frozen and thawed for 0,3,5,7 and 10 times respectively.The durability of freeze-thaw cycle was measured by unconfined compression test.After five freeze-thaw cycles,the strength of the sample decreased steadily,71.22%of the ordinary saline soil sample,10%of the sample mixed with silica powder,and the durability of the saline soil improved by silica powder.
出处
《科技创新与应用》
2020年第4期98-100,共3页
Technology Innovation and Application
关键词
碳酸盐渍土
硅微粉
改良试验
冻融循环耐久性
carbonate soil
silica powder
improvement test
freeze-thaw cycle durability
