Environmental Sanitation Engineering ›› 2023, Vol. 31 ›› Issue (6): 85-90.doi: 10.19841/j.cnki.hjwsgc.2023.06.014

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Experimental Study on Mechanical Properties of Solidified Old Waste Soil

ZHANG Ping, LIN Huansheng, LI Jia, LI Shuang, DING Qianshen, LIU Lei   

  1. 1. Shenzhen Tagen Pingshan Construction Engineering Co. Ltd.; 2. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics of Chinese Academy of Sciences; 3. Hubei Province Key Laboratory of Contaminated Sludge and Soil Science and Engineering
  • Online:2024-01-05 Published:2024-01-05

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Abstract: In-situ backfilling after excavation of old waste soil is of great significance for landfill resource utilization. The typical old waste soil was taken as the research object, the test of curing mechanical properties of humus soil in landfill was carried out, and the effects of different curing reagents of ordinary portland cement, sulphoaluminate cement, blast slag and cement blends on curing mechanical properties were compared and analyzed. The results showed that the mechanical properties of humic soil were improved obviously after curing agent treatment, and the performance of sulphoaluminate cement was better than that of other curing agent. After solidification, the strength of mixed particle size waste could still meet the requirements of mainstream road subgrade soil standards in our country.

Key words: waste, humus soil, solidification, mechanics

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