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Analysis on Expansive Red Clay of Liuzhou Bailian- Airport
Author(s): 
Pages: 117-120
Year: Issue:  5
Journal: URBAN GEOTECHNICAL INVESTIGATION & SURVEYING

Keyword:  红粘土胀缩性机场房裂失水收缩;
Abstract: 按《膨胀土地区建筑技术规范》GBJ112-87中以土的自由膨胀率Fs值划分膨胀潜势,柳州白莲机场的红粘土多数不属于膨胀土,仅局部显示弱胀缩潜势.以此结论进行军航营区群房的设计施工后,有1/3多的房屋建筑发生了不同程度的墙裂和地裂.通过调查,本文揭示该红粘土具弱~中等胀缩性,其胀缩特征是以失水收缩变形为主,而遇水后体积膨胀变形甚微,故由此特征引起地基变形导致房裂破坏的现象多发生在每年的旱季.
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