Application of Improved Expansive Soil in the Hebeng High-speed Rail Roadbed Filling
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摘要: 分析合蚌高铁沿线分布的膨胀土的工程特性,通过对沿线地区所取典型土样的室内试验,得到自由膨胀率、颗粒组成等试验指标,通过对多个典型取土场的土样进行不同掺灰率的试验,根据强度、胀缩性和水理性等指标确定合蚌高铁石灰改良膨胀土的合理掺灰率。Abstract: The engineering properties of the Hebeng high-speed rail are analyzed.Free expansion rate,grain composition test index is obtained through the indoortest of typical soil samples.Different lime-doped rates test of several typical soil sample were conducted.Reasonable lime-doped rates of Hebeng high-speed rail expansive soil is determined according to the strength and swell-shrink and rational water index.
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Key words:
- expansive soil /
- engineering properties /
- roadbed filling /
- improving indoor test
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