| Title |
Shear Strength and Deformation Characteristics of Lightweight Soils Mixed with Tire Powder |
| Authors |
윤길림(Yoon, Gil Lim) ; 윤여원(Yoon, Yeo Won) ; 안광현(Ahn, Kwang Hyun) |
| DOI |
https://doi.org/10.12652/Ksce.2012.32.6C.259 |
| Keywords |
경량혼합토;기포;폐타이어 분말;압축강도;뒷채움재;지반개량 lightweight soils;air foam;waste tire powder;shear strength;backfill;ground improvement |
| Abstract |
This paper investigates engineering characteristics of lightweight soils mixed with air foam and tire powder. Lightweight soils could be used as foundation materials, back-fills of reducing vibrating or abutment, and so on. Unconfined and triaxial compression tests were carried out to analyze strength and deformation characteristics of lightweight soils by changing target moist unit weight and cement contents. In comparison with strength characteristics of two different kinds of lightweight soils with same most unit weights ($13kN/m^3$), unconfined compression tests showed similar compressive strength, however, triaxial compression tests showed that compressive strength of lightweight soils mixed with waste tire powder was relatively larger strength than that of lightweight soils mixed with air foam because of elasticity of waste tire powder. Also, unconfined and triaxial compressive strengths of most of lightweight soils increase with increases of moist unit weight and cement contents. However, the strength of lightweight soils mixed with air foam under $11kN/m^3$, when moist unit weight exceeds a certain cement contents, decreases even though cement contents increase because of the effect in a void gap of air foam. |