You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.


    Slurry Wall Backfill Integrity and Desiccation

    Published: 0

      Format Pages Price  
    PDF (284K) 10 $25   ADD TO CART
    Complete Source PDF (3.8M) 197 $55   ADD TO CART


    Experiments were conducted to study the effect of desiccation on backfill materials consisting of a sodium bentonite, kaolinite, and sand. The permeant consisted of water, aniline, phenol, and hydrochloric acid solutions. Soil specimens subjected to drying and wetting cycles snowed considerable cracking. The largest cracks were formed with phenol and the smallest with water. With increased kaolinite contents, the width and frequency of the cracks decreased. No cracks were formed with hydrochloric acid. The tests on cracked specimens indicated higher initial permeability which decreased with time and reached the same order of magnitude as uncracked specimens. Essentially all the cracks closed during the permeability tests. In the field, cracks are not likely to close and permeability is inclined to remain high or even increase if the soil in the cracks erodes.


    permeability, flexible wall cell, backfill, kaolinite, bentonite, swelling, cracking, contaminants, desiccation

    Author Information:

    Khera, RP
    Professor, New Jersey Institute of Technology, Newark, NJ

    Thilliyar, M
    Project Engineer, Peregrine Building Corp., West Peterson, NJ

    Committee/Subcommittee: D18.06

    DOI: 10.1520/STP23549S