Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)
- 2006.03a
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- Pages.383-393
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- 2006
Characteristics of Compressive Strength of Geogrid Mixing Reinforced Lightweight Soil
지오그리드 혼합 보강경량토의 강도특성 연구
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Kim, Yun-Tae
(Dept. of Ocean Engineering, Pukyong National Univ.) ;
- Kwon, Yong-Kyu (Dept. of Geotechnical, Dodam Eng & Construction) ;
- Kim, Hong-Joo (Dept. of Ocean Engineering, Pukyong National Univ.)
- Published : 2006.03.24
Abstract
This paper investigates strength characteristics and stress-strain behaviors of geogrid mixing reinforced lightweight soil. The lightweight soil was reinforced with geogrid in order to increase its compressive strength. Test specimens were fabricated by various mixing conditions including cement content, initial water content, air content and geogrid layer and then unconfined compression tests were carried out. From the experimental results, it was found that unconfined compressive strength as well as stress-strain behavior of lightweight soil were strongly influenced by mixing conditions. The more cement content that is added to the mixture, the greater its unconfined compressive strength. However, the more initial water content or the more air foam content, the less its unconfined compressive strength. It was observed that the strength of geogrid reinforced lightweight soil was increased due to reinforcing effect by the geogrid for most cases except cement content less than 20%. In reinforced lightweight soil, secant modulus