Experimental and Theoretical Studies on Compressive Stress-strain Relationship of Phosphogypsum-lime-flyash-gravel Mixture

摘要：

Phosphogypsum-lime-flyash-gravel mixture (PLFG) is usually used to strengthen road foundation of geotechnical engineering.It is important to correctly understand its compressive behavior before corresponding design.In this present paper,triaxial compression test on PLFG was carried out,and its stress-strain curve was investigated.Experiment data show that PLFG is with high bearing capacity and good stiffness.A new composite-exponent model was established,which is available for both hardening and softening type strain-stress curves of PLFG.Finally,comparison between PLFG tested data and new model simulation was performed,and good agreements have been found.This research is helpful for engineering sustainable utilization of phosphogypsum to bring economy and to reduce environmental pollution.

关键词： phosphogypsum mixture laboratory test strain-stress curve mathematical model strain softening

作者: WANG Wei WU Shilong YANG Dexi

作者单位: Department of Civil Engineering,Shaoxing University,Shaoxing 312000,China Research Institute of Geotechnical Engineering,Hohai University,Nanjing 210098,China

会议类型: 国际会议

会议名称: 2010 International Conference of Environment Materials and Environment Management(2010年环境材料与环境管理国际学术会议 EMEM 2010)

会议地点: 哈尔滨

会议语种:英文

页码: 1865-1869

在线出版日期: 2010-07-24（万方平台首次上网日期，不代表论文的发表时间）