섬유혼합 보강경량토의 역학적 특성

Abstract

The objective of this study is to investigate the mechanical characteristics of fiber-reinforced lightweight soil using waste fishing net or monofilament for recycling both dredged soils and bottom ash. Reinforced lightweight soil consists of dredged soil, cement, air foam and bottom ash. Waste fishing net or monofilament was added the mixture in order to increase the shear strength of lightweight soil. Test specimens were fabricated by various mixing conditions including waste fishing net content and monofilament content. Several series of unconfined compression tests and direct shear tests were carried out. From the experimental results, it was found that unconfined compressive strength as well as stress-strain behavior of reinforced lightweight soil were strongly influenced by mixing conditions. In this study, the maximum increase in shear strength was obtained at 0.5% content of monofilament and 0.25% waste fishing net, respectively. The unconfined compressive strength of reinforced lightweight soil with monofilament was greater than that of reinforced lightweight soil with waste fishing net.