ZHANG Ting-ting, LI Jiang-shan, WANG Ping, et al. Experimental study of stress-strain properties of lead-contaminated soils
treated by magnesium phosphate cement[J]. 2016, 37(S1): 215-225.
ZHANG Ting-ting, LI Jiang-shan, WANG Ping, et al. Experimental study of stress-strain properties of lead-contaminated soils
treated by magnesium phosphate cement[J]. 2016, 37(S1): 215-225.DOI: 10.16285/j.rsm.2016.S1.028.
Magnesium phosphate cement(MPC) is used to stabilize/solidify lead-contaminated soils. Unconfined compressive strength tests are conducted to investigate the variation of stress-strain properties of MPC treated lead-contaminated soils along with MPC dosage
curing time
water content and lead concentration. The results show that stress-strain curves of lead-contaminated soils can be divided into three stages: compaction stage
elastic stage and destruction stage. The qu
and E50 increase significantly with MPC dosage and curing time
while the εf change oppositely. There are threshold values for water content and lead concentration in terms of its influence on qu and E50
where qu is the threshold value of 0.45 and E50 is the threshold value of 500 mg/kg. The qu
and E50 increase with the lead concentration and water content before they reach the threshold value. The qu decreased as power function with the increase of εf. E50 increase linearly with qu while decrease monomially with εf