Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Accumulated strain and dynamic strength of dredged soil solidified with soda residue
The dredged soil was solidified with soda residue (SR), ground granulated blast furnace slag and carbide slag. Dynamic triaxial tests were conducted on solidified soil under different confining pressure, SR content and curing age. The accumulated strain (ɛp), critical dynamic stress (σdcr), dynamic strength and empirical formula were studied. The results revealed that increasing confining pressure, SR content and curing age reduced ɛp and increased σdcr and dynamic strength of solidified soil. The relationship between ɛp and loading cycles (N) of solidified soil conformed to an empirical model, and the fitting parameters A, B and C were obtained. The state of the ɛp vs. N curve could be judged according to A, B and C, and the discriminating standard was given. Based on the A × B fitting formula, a method for calculating σdcr was proposed. The values of σdcr for solidified soil were 93.56 kPa to 231.30 kPa, which were greater than clay subgrade filler and similar to solidified soil subgrade filler. The values of σdcr were greater than the dynamic stress level of the subgrade bed, indicating that solidified soil met the dynamic stability requirement. The dynamic cohesion (cd) and dynamic internal friction angle (φd) of solidified soil both decreased with the increase of the failure loading cycle. The cd varied greatly, ranging from 58.4 kPa to 85.35 kPa, and φd was about 11.96° to 13.05°. The solidified dredged soil can be used as filler in subgrade engineering from the viewpoint of accumulated strain and dynamic strength. Graphical Abstract
Accumulated strain and dynamic strength of dredged soil solidified with soda residue
The dredged soil was solidified with soda residue (SR), ground granulated blast furnace slag and carbide slag. Dynamic triaxial tests were conducted on solidified soil under different confining pressure, SR content and curing age. The accumulated strain (ɛp), critical dynamic stress (σdcr), dynamic strength and empirical formula were studied. The results revealed that increasing confining pressure, SR content and curing age reduced ɛp and increased σdcr and dynamic strength of solidified soil. The relationship between ɛp and loading cycles (N) of solidified soil conformed to an empirical model, and the fitting parameters A, B and C were obtained. The state of the ɛp vs. N curve could be judged according to A, B and C, and the discriminating standard was given. Based on the A × B fitting formula, a method for calculating σdcr was proposed. The values of σdcr for solidified soil were 93.56 kPa to 231.30 kPa, which were greater than clay subgrade filler and similar to solidified soil subgrade filler. The values of σdcr were greater than the dynamic stress level of the subgrade bed, indicating that solidified soil met the dynamic stability requirement. The dynamic cohesion (cd) and dynamic internal friction angle (φd) of solidified soil both decreased with the increase of the failure loading cycle. The cd varied greatly, ranging from 58.4 kPa to 85.35 kPa, and φd was about 11.96° to 13.05°. The solidified dredged soil can be used as filler in subgrade engineering from the viewpoint of accumulated strain and dynamic strength. Graphical Abstract
Accumulated strain and dynamic strength of dredged soil solidified with soda residue
He, Jun (Autor:in) / Zhang, Chi (Autor:in) / Guan, Jia-xian (Autor:in) / Lv, Xiao-long (Autor:in)
2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
BKL:
56.00$jBauwesen: Allgemeines
/
38.58
Geomechanik
/
38.58$jGeomechanik
/
56.20
Ingenieurgeologie, Bodenmechanik
/
56.00
Bauwesen: Allgemeines
/
56.20$jIngenieurgeologie$jBodenmechanik
RVK:
ELIB18
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