泡沫轻质土渗透及吸失水性能试验研究

Urban Roads Bridges & Flood Control(2023)

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Abstract
通过对湿重度分别为5.5kN/m3、6kN/m3的泡沫轻质土进行渗透及吸失水试验,研究了泡沫轻质土的孔隙状态、渗透系数及吸失水性能.试验结果表明:气泡混合轻质土是一种高孔隙率材料,其孔隙占比在75%以上,渗透系数约为10-5~10-6数量级,介于粉质粘土与粘土的渗透系数之间;受水浸泡后,泡沫轻质土容重最大增加约25%,失水后容重仍然有约9.5%增加量,在工程设计中应根据不同置换路基施工环境对设计容重按照1.0~1.25之间进行修正.
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Key words
foamed light soil,permeability coefficient,water absorption rate,water loss rate,severe correction
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