Shear Behavior of Recycled Fine Aggregate Reinforced by Nano-MgO Modified Cement

In order to study the mechanical modification effect of nano-MgO on cement-reinforced recycled fine aggregate (CRA), direct shear tests and triaxial shear tests were carried out. In the test of recycled fine aggregate reinforced by nano-MgO modified cement (MCRA), the cement content was fixed at 2%,...

Descripción completa

Detalles Bibliográficos
Autores principales: Zhu, Ting, Shou, Yitong, Chen, Xiaoqing, Lv, Beifeng, Huang, Xianwen, Yu, Yanfei, Li, Cuihong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9610497/
https://www.ncbi.nlm.nih.gov/pubmed/36295255
http://dx.doi.org/10.3390/ma15207188
Descripción
Sumario:In order to study the mechanical modification effect of nano-MgO on cement-reinforced recycled fine aggregate (CRA), direct shear tests and triaxial shear tests were carried out. In the test of recycled fine aggregate reinforced by nano-MgO modified cement (MCRA), the cement content was fixed at 2%, and the nano-MgO content varied between 0%, 0.5%, 1.0%, 1.5% and 2.0%. The test results showed that adding nano-MgO can greatly increase both the direct shear strength and triaxial shear strength of MCRA. This increase in direct shear strength was mainly attributed to the increase in cohesion. However, this increase in triaxial shear strength was attributed to the simultaneous increase in the cohesion and friction angle.

Ejemplares similares