[1]苏文生.Ca(OH)2改善弱酸性软土水泥土性能的试验与实践[J].福建工程学院学报,2020,18(03):218-222.[doi:10.3969/j.issn.1672-4348.2020.03.003]
　SU Wensheng.Experimental studies on improving the properties of weak-acid soft cement-soil with Ca(OH)2[J].Journal of FuJian University of Technology,2020,18(03):218-222.[doi:10.3969/j.issn.1672-4348.2020.03.003]
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Ca(OH)2改善弱酸性软土水泥土性能的试验与实践()
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《福建工程学院学报》[ISSN:2097-3853/CN:35-1351/Z]

卷:
第18卷
期数:
2020年03期
页码:
218-222
栏目:
出版日期:
2020-06-25

文章信息/Info

Title:
Experimental studies on improving the properties of weak-acid soft cement-soil with Ca(OH)2
作者:
苏文生
福建省建筑设计研究院有限公司
Author(s):
SU Wensheng
Fujian Provincial Institute of Architectural Design Co. Ltd.
关键词:
水泥土; Ca(OH)2; 工程性质; 软土处理
Keywords:
cement-soil;  Ca(OH)2;  engineering properties;  soft soil treatment
分类号:
TU413
DOI:
10.3969/j.issn.1672-4348.2020.03.003
文献标志码:
A
摘要:
为了改善弱酸性软土水泥土工程性能，对比不同Ca(OH)2外加剂掺量下的水泥土配方试验，分析其对水泥土密度、无侧限抗压强度、渗透性、压缩性提高的效果。 掺入Ca(OH)2 后，其密度增大幅度基本位于4.8%以内。 水泥土试件的抗压强度随着Ca(OH)2掺量的增加而增加，当掺量高于10%时增幅相对较小。 随着养护龄期的增加，水泥土强度逐渐提高，特别是早期强度提高较为明显。 随着外加剂掺量的增加，各个不同龄期的水泥土渗透系数随之降低，水泥土压缩模量得到提高。 综合提高效果和经济性因素，Ca(OH)2外加剂掺量不宜超过10%。
Abstract:
In order to improve the engineering performance of weak-acid soft cement-soil, tests of cement-soil formula with different Ca(OH)2 admixture content were compared. The effects of the content on cement soil density, unconfined compressive strength, permeability and compressibility were analyzed. After the incorporation of Ca(OH)2, its density increase is basically within 4.8%. The compressive strength of the cement-soil test piece increases with the addition of the admixture Ca(OH)2. When the content is higher than 10%, the increase is relatively small; with the increase of the curing age, the strength of cement-soil is gradually increased, especially in the early stage; with the increase of the admixture content, the permeability coefficient of the cement-soil at different ages is reduced, and the compressive modulus of the cement-soil is improved. Taking into account effect improvement and economic factors, the content of Ca(OH)2 admixture should not exceed 10%.

参考文献/References:

[1] 傅小姝, 王江营, 张贵金, 等. 不同pH值下水泥土力学与渗透特性试验研究[J]. 铁道科学与工程学报, 2017, 14(8): 1639-1646. [2] 李加进. Ca(OH)2改善弱酸性软土水泥土工程性质的试验研究[J]. 水利科技, 2018(3): 56-59, 62. [3] 赵振亚, 申向东, 贾尚华. Ca(OH)2对低掺量水泥土的强度影响[J]. 土木建筑与环境工程, 2012, 34(S1): 170-173.[4] 马冬梅. 水泥土搅拌法加固软土地基的室内试验研究[J]. 现代交通技术, 2007, 4(6): 1-4.[5] 骆以道, 丘建金, 郭敏燕. 搅拌水泥土抗压强度特性试验[J]. 土工基础, 2010, 24(4): 91-94. [6] 杨枫，毕贤顺，罗才松.闽南地区水泥土工程特性实验[J].黑龙江科技学院学报，2012，22（5）：506-509.

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更新日期/Last Update: 2020-06-25