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水泥砾质土压实特性试验研究    

Experiment Research on Compaction Behavior of Cement-Gravel Soil

文献类型:期刊文献

中文题名:水泥砾质土压实特性试验研究

英文题名:Experiment Research on Compaction Behavior of Cement-Gravel Soil

作者:刘忠[1];赵磊[2];鲁立三[1];王荆[1];丁永辉[3]

第一作者:刘忠

机构:[1]黄河水利科学研究院;[2]新乡学院土木工程与建筑学院;[3]河南徐辉建筑工程设计有限公司

第一机构:黄河水利科学研究院,河南郑州450003

年份:2015

卷号:37

期号:11

起止页码:118-121

中文期刊名:人民黄河

外文期刊名:Yellow River

收录:CSTPCD;;北大核心:【北大核心2014】;

基金:中央级公益性科研院所基本科研业务费专项(HKY-JBYW-2014-03)

语种:中文

中文关键词:水泥砾质土;压实特性;水泥掺入比;高土石坝

外文关键词:high earth-rockfill dam;;cemented-gravel soil;;compaction property;;cement mixing ratio

摘要:水泥砾质土具有变形模量大、压缩性小和防渗性能好等优点,可以有效减小高土石坝心墙变形,改善高土石坝心墙应力状态。通过击实试验,研究在不同水泥掺入比和不同掺砾量下水泥砾质土的压实特性。结果表明:不同水泥掺入比下水泥砾质土的最大干密度和最优含水率均低于相同掺砾量下的砾质土;随着水泥掺入比的增大,相同掺砾量下水泥砾质土的最大干密度呈递减趋势,但减小幅度均小于1%;水泥砾质土的最优含水率随水泥掺入比的增大而增大,但增大幅度较小且始终小于相同掺砾量下砾质土的最优含水率。
Because cement-gravel soil has the advantages of high deformation modulus, low compressibility and high anti-permeability performance, it can effectively reduce the core wall deformation and improve the core wall stress state of high earth-rockfill dam. But little attention pays on compaction characteristics of the material now. This paper studied the compaction characteristics of cement-gravel soil with different cement mixing ratios and gravel contents through compaction test. The test results show that under the same gravel content maximum dry density and the optimum water content of cement-gravel soil with different cement contents is lower than that of gravelly soil. The maximum dry density of cemented-gravel soil shows a decreasing tendency with cement mixing ratio increasing. However, the decreased degree of the maximum dry density is less than one percent. The optimum water content of cemented-gravel soil shows a growing tendency with cement mixing ratio increasing. However, the optimum water content of cemented-gravel soil is always lower than that of gravelly soil.

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