为了深入探讨水泥土渗透系数的变化规律,采用室内试验研究方法,对不同干密度、水泥掺量和龄期的水泥土进行了室内渗透试验研究。结果表明:水泥土渗透系数与水泥土的干密度、水泥掺量、龄期密切相关;在干密度和龄期一定条件下,渗透系数随水泥掺量增大而增大;在标准击实功干密度和龄期一定条件下,渗透系数随水泥掺量增大而减小;在标准击实功干密度和水泥掺量一定条件下,渗透系数则随龄期的延长而减小。结论不仅对水泥土的渗透理论研究具有积极的探索意义,而且对采用水泥土施工或加固的岩土工程建设也具有一定的现实意义。
Abstract
To explore the cement soil’s permeability coefficient variation, we performed laboratory permeability test on cement soil of different dry densities, cement contents and ages. The test results show that cement soil’s permeability coefficient is closely related with its dry density, cement content and age when the dry density and age remain unchanged, the permeability coefficient increases with the increase of cement content; while when the dry density under standard compaction work and the age remain the same, the permeability coefficient decreases with the increase of cement content; when the dry density under standard compaction work and the cement content remain the same, the permeability coefficient decreases with the increase of age. These conclusions are helpful to explore cement soil’s permeability, and are also practical for the construction and reinforcement of geotechnical engineering using cement soil.
关键词
水泥土 /
渗透系数 /
水泥掺量 /
干密度 /
龄期
Key words
cement soil /
permeability coefficient /
cement content /
dry density /
age
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基金
西北农林科技大学基本科研业务专项资金资助项目(QN2011023)
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