人民黄河2025，Vol.47Issue(6)：156-160,5.DOI:10.3969/j.issn.1000-1379.2025.06.024
黄河下游粉砂土掺量对泡沫轻质土性能的影响
Impact of Lower Yellow River Silt Incorporation on the Properties of Foamed Light Weight Soil
摘要
Abstract
Foam lightweight soil is important filler for road embankment,but there are problems such as large dry shrinkage deformation and insufficient strength of large volume foam lightweight soil.Foam lightweight soil was produced by using silt soil from the lower reaches of the Yellow River as fine aggregate.The effects of silt soil content under different design wet densities on the flow value,compressive strength,dry shrinkage rate and durability were analyzed through experiments,and the relationship between its microstructure and mechanical properties was analyzed through numerical simulation.The results show that as the silt soil content increases,the 28-day compressive strength of foamed lightweight soil decreases.According to the existing specifications,combined with engineering examples and test results,foam lightweight soil is recommended as the sub-grade filler.The mixing ratio of silt soil is 20%-30%,and the dry shrinkage rate of foam lightweight soil decrea-ses with the increase of the mixing ratio of silt soil.Observing the microstructure,it is found that the addition of silt soil can expand the pore distribution range of lightweight soil.关键词
泡沫轻质土/粉砂土/性能试验/微观结构/黄河下游Key words
foamed lightweight soil/silt soil/performance testing/microstructure/Lower Yellow River分类
建筑与水利引用本文复制引用
张婧,徐少辉,王帅,谢炳坤,王浩,赵显昊..黄河下游粉砂土掺量对泡沫轻质土性能的影响[J].人民黄河,2025,47(6):156-160,5.基金项目
河南省科技攻关项目(242102321007,242102321012) （242102321007,242102321012）
