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Comparison of Compressive Behavior Characteristics between Unreinforced and Reinforced Lightweight Soils for Recycling of Dredged Soils  

Kim, Yun-Tae (Dept. of Ocean Engineering, Pukyong National University)
Kwon, Yong-Kyu (Dept. of Ocean Engineering, Pukyong National University)
Kim, Hong-Joo (Dept. of Ocean Engineering, Pukyong National University)
Publication Information
Journal of Ocean Engineering and Technology / v.19, no.6, 2005 , pp. 44-49 More about this Journal
Abstract
This paper investigates strength characteristics and stress-strain behaviors of unreinforced and reinforced lightweight soils. Lightweight soil, composed of dredged soil, cement, and air-foam, was reinforced by a waste fishing net, in order to increase its compressive strength. Test specimens were fabricated by various mixing conditions, such as cement content, initial water content, air content, and waste fishing net; then, unconfined compression tests were carried out on these specimens. From the test results, it was shown that reinforced lightweight soil had different behavior after failure, even though it had similar behavior as unreinforced lightweight soil before failure. The test results also showed that stress became constant after peak strength in reinforced lightweight soil, while the stress decreased continuously in unreinforced lightweight soil. It was observed that the strength was increased due to reinforcing effect by the waste fishing net for most cases, except high water content greater than $218\%$. In the case of high water content, a reinforcing effect is negligible, due to slip between waste fishing net and soil particles. In reinforced lightweight soil, secant modulus (E50) was increased, due to the inclusion of waste fishing net.
Keywords
Reinforced Lightweight Soil; Waste Fishing Net; Dredged Soil; Unconfined Compression Test;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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