膨胀土判别分类及其石灰改性
Distinction and Categorization of Expansive Soil,and Its Modification by Blending Lime
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- DOI:
- 作者:
- 应治河, 李建民
YING Zhi-he
- 作者单位:
- 中原油田工程建设总公司, 河南濮阳 457001
Engineering Construction General Company of Zhongyuan Oilfield,Puyang,Henan 457001,China
- 关键词:
- 膨胀土;分类判定标准;膨胀土改性;石灰掺量;试验
expansive soil;category assessment standard;modification of expansive soil;amount of blending lime test
- 摘要:
- 膨胀土对建筑设施的安全有很大影响,通过对国内外多种膨胀土判别与分类方法的评判指标进行综合统计,结合当地经验和工程实际情况,提出了膨胀土膨胀潜势等级判定标准。利用石灰对膨胀土改性最重要的是寻求石灰的最佳掺和比,先后进行了4%、6%、8%、5%不同石灰掺和比的试验,现场试验表明,在石灰掺量为5%时,经改性的各层土均属非膨胀土,改性效果显著。
Expansive soil has great effects on architectures and facilities.On the basis of synthetic statistics of assessment indexes of expansive soil distinction and categorization methods used at home and abroad combined with local experiences and practical projects,the paper puts forward the grade assess-ment standard on expansive potential of expansive soil.The most important thing for modification of ex-pansive soil using lime is to seek for the optimum blending ratio.The tests with different blending ratios of lime of4%?6%?8%?5%were conducted.The field tests showed that the soils at all layers became non-expansive after modification with blending ratios of lime of5%.The effectiveness of modification is significant.2004,4(4): 35-37,4 收稿日期：2004-3-29分类号：TU443作者简介：应治河(1952-),男,河南西平人,1994年毕业于河南大学建筑经济专业,工程师,现从事项目管理工作.参考文献：
[1] GJB1112-91,军用机场场道工程施工及验收规范[S].
[2] GJB112-87,膨胀土地区建筑技术规范[S].
[3] JGJ79-91,建筑地基处理技术规范[S].
[4] JTJ051-93,公路土工试验规程[S].
[5] MH5001-2000,民用机场飞行区技术标准[S].
[6] MH5007-2000,民用机场飞行区工程竣工验收质量检验评定标准[S].
[7] JTJ013-95,公路路基设计规范[S].
[8] JTJ033-95,公路路基施工技术规范[S].
[9] JTJ071-94,公路工程质量检验评定标准[S].