摘要
Abstract
With the continuous advancement of Hefei engineering construction,the problem of expansive soil has become increasingly promi-nent.In this paper,the expansive soil in Hefei City is studied deeply.The physical and chemical properties,expansion and shrinkage proper-ties and mechanical indexes of several typical sites were systematically analyzed through investigation and test.The results show that the miner-al composition of Hefei expansive soil is complex,montmorillonite content is high,showing a significant water swelling and loss of water shrink-age characteristics.In terms of physical mechanics,it has the characteristics of high plasticity,low permeability and non-uniformity.In view of the engineering problems caused by expansive soil,such as uneven foundation settlement and slope instability,the corresponding effective engineering measures such as foundation treatment,slope protection and building structure optimization are put forward.关键词
膨胀土/矿物成分/胀缩性能/力学指标Key words
Expansive soil/Mineral composition/Swelling and shrinkage properties/Mechanical index分类
建筑与水利
