Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Particle size effect on unconfined compressive strength of biotreated sand
https://orcid.org/0000-0003-2011-2520
Abstract The great variations in mechanical properties of biotreated specimens have been reported due partially to the wide range of particle size, while research on the particle size effect in biotreated sand remains limited. In this study, we conducted specifically-designed unconfined compressive tests on biotreated sand to investigate the particle size effect with two types of sands, calcareous sand (CCS) and glass bead sand (GBS) of five different particle sizes. Experimental results indicate that unconfined compressive strength (UCS) of specimens increases significantly as cementation level increases, and UCS of biotreated CCS specimens is apparently higher than that of GBS specimens at the same cementation level. A power law decrease in UCS is observed with increasing particle size, which was characterized with an empirical equation by adapting Frossard's size effect equation. SEM photos suggest that the coating CaCO3 in the specimens with small particles contributes considerably and the size effect on UCS is attributed to the reduction of this kind of contribution with increasing particle size.
Particle size effect on unconfined compressive strength of biotreated sand
https://orcid.org/0000-0003-2011-2520
Abstract The great variations in mechanical properties of biotreated specimens have been reported due partially to the wide range of particle size, while research on the particle size effect in biotreated sand remains limited. In this study, we conducted specifically-designed unconfined compressive tests on biotreated sand to investigate the particle size effect with two types of sands, calcareous sand (CCS) and glass bead sand (GBS) of five different particle sizes. Experimental results indicate that unconfined compressive strength (UCS) of specimens increases significantly as cementation level increases, and UCS of biotreated CCS specimens is apparently higher than that of GBS specimens at the same cementation level. A power law decrease in UCS is observed with increasing particle size, which was characterized with an empirical equation by adapting Frossard's size effect equation. SEM photos suggest that the coating CaCO3 in the specimens with small particles contributes considerably and the size effect on UCS is attributed to the reduction of this kind of contribution with increasing particle size.
Particle size effect on unconfined compressive strength of biotreated sand
https://orcid.org/0000-0003-2011-2520
Abstract The great variations in mechanical properties of biotreated specimens have been reported due partially to the wide range of particle size, while research on the particle size effect in biotreated sand remains limited. In this study, we conducted specifically-designed unconfined compressive tests on biotreated sand to investigate the particle size effect with two types of sands, calcareous sand (CCS) and glass bead sand (GBS) of five different particle sizes. Experimental results indicate that unconfined compressive strength (UCS) of specimens increases significantly as cementation level increases, and UCS of biotreated CCS specimens is apparently higher than that of GBS specimens at the same cementation level. A power law decrease in UCS is observed with increasing particle size, which was characterized with an empirical equation by adapting Frossard's size effect equation. SEM photos suggest that the coating CaCO3 in the specimens with small particles contributes considerably and the size effect on UCS is attributed to the reduction of this kind of contribution with increasing particle size.
Particle size effect on unconfined compressive strength of biotreated sand
Xiao, Yang (Autor:in) / Xiao, Wentao (Autor:in) / Wu, Huanran (Autor:in) / Zhao, Hanghang (Autor:in) / Liu, Hanlong (Autor:in)
20.08.2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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