ANALYSIS ON THE BASIC PROPERTIES OF PBFC ANTI-SEEPAGE SLURRY IN LANDFILL

The PBFC anti-seepage slurry formula with polyvinyl alcohol modified bentonite as primary materials were optimized by orthogonal test for solving the leakage problem of landfill leachate effectively and forming the effective isolation in the landfill. The seepage prevention performance, permeability properties and mechanical properties were studied through a series of laboratory experiments. The influence of various factors on the permeability properties and mechanical properties was analyzed and the modified principle of polyvinyl alcohol on bentonite was explored. The results indicated that the concretion bodies of PBFC anti-seepage slurry after 28 days have a good anti-seepage performance, and the average permeability coefficient was less than 10(-7) cm/s; With 0.5-1.5 MPa unconfined compressive strength and 3.68 - 6.42 % axial ultimate strain range, the PBFC anti-seepage slurry can be compatible with the surrounding soil deformation and meet the requirements of the landfill.