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Experimental Study of Waste Tire Powder-Added Lightweight Soil as Flowable Backfill  

Kim, Yun-Tae (Department of Ocean Engineering Pukyong National University)
Kang, Hyo-Sub (Department of Ocean Engineering Pukyong National University)
Publication Information
Journal of Ocean Engineering and Technology / v.22, no.5, 2008 , pp. 112-118 More about this Journal
Abstract
The purpose of this study was to determine the engineering and environmental properties of the waste tire powder-added lightweight soil (TLS) used as flowable backfill. The TLS used in this experiment consisted of dredged soil, bottom ash, waste tire powder and cement. Test specimens were prepared with various contents of waste tire powder ranging from 0% to 100% at 25% intervals and water contents ranging from 140% to 200% by the weight of the dry dredged soil. Several series of unconfined compression tests, flow tests, and leaching tests were carried out. Experimental results for the TLS indicated that the unconfined compressive strength, secant modulus (), and unit weight of the TLS decreased with an increase in waste tire powder content. However, as the waste tire powder content increased, the stress-strain relationship of the TLS showed more ductile behavior rather than brittle behavior. The flow value increased with an increase in water content, but decreased with an increase in waste tire powder content. The result of the leaching test showed that the leaching amounts of heavy metals were lower than the permitted limits suggested by the Ministry of Environment.
Keywords
Lightweight soil; Waste tire powder; Dredged soil; Flow test;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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