Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The Chemical-Physical Combined Method for Improving Clay Slurry in Land Reclamation
This paper has concentrated on technical effectiveness of Chemical-Physical Combined Method (CPCM) through a series of laboratory tests. The chemical stabilization method was used to investigate two slurry groups, one initially with lower water content w (w<2LL; LL-liquid limit) and the other with higher initial water content (w≥2~6LL) which is within the water content range of dredged clay slurry. The final water content, shear strength Cu of clay slurry achieved and their relationship after chemical pre-treatment were set up for the two groups at different chemical dosages, while some vacuum preloading (VP) tests using pure clay slurry were also conducted for comparison. When the initial water content is lower (w<2LL), the achieved shear strength with the chemical treatment can be higher than that of pure clay slurry treated by VP with drains. However the shear strength after the chemical treatment is generally poorer when the initial water content is higher (w≥2~6LL). In order to achieve better or higher performances, the VP with drains was introduced during the chemical stabilization. The achieved higher strengths with this combined method have proven that CPCM for improvement of clay slurry is not only academically effective but also very potential for engineering applications.
The Chemical-Physical Combined Method for Improving Clay Slurry in Land Reclamation
This paper has concentrated on technical effectiveness of Chemical-Physical Combined Method (CPCM) through a series of laboratory tests. The chemical stabilization method was used to investigate two slurry groups, one initially with lower water content w (w<2LL; LL-liquid limit) and the other with higher initial water content (w≥2~6LL) which is within the water content range of dredged clay slurry. The final water content, shear strength Cu of clay slurry achieved and their relationship after chemical pre-treatment were set up for the two groups at different chemical dosages, while some vacuum preloading (VP) tests using pure clay slurry were also conducted for comparison. When the initial water content is lower (w<2LL), the achieved shear strength with the chemical treatment can be higher than that of pure clay slurry treated by VP with drains. However the shear strength after the chemical treatment is generally poorer when the initial water content is higher (w≥2~6LL). In order to achieve better or higher performances, the VP with drains was introduced during the chemical stabilization. The achieved higher strengths with this combined method have proven that CPCM for improvement of clay slurry is not only academically effective but also very potential for engineering applications.
The Chemical-Physical Combined Method for Improving Clay Slurry in Land Reclamation
Wu, Dong Qing (Autor:in) / Xu, Wen Yu (Autor:in) / Zhu, Dan Ping (Autor:in)
Second International Conference on Geotechnical and Earthquake Engineering ; 2013 ; Chengdu, China
IACGE 2013 ; 308-315
09.10.2013
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
The Chemical-Physical Combined Method for Improving Clay Slurry in Land Reclamation
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