Abstract
The treatment of contaminated soil is a crucial issue in geotechnical and environmental engineering. This study proposes to incorporate appropriate polypropylene fibers and cements as an effective method to treat heavy metal contaminated soil (HMCS). The objective of this paper is to investigate the effects of fiber content, fiber length, cement content, curing time, heavy metal types and concentration on the mechanical properties of soils. To this end, a series of direct shear test, unconfined compression strength (UCS) test, dry-wet cycle and freeze-thaw cycle test are performed. The results confirm that the appropriate reinforcement of polypropylene fibers and cement is an effective way to recycle HMCS as substitutable fillers in roadbed, which exhibits benefits in environment and economy development.
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