Chunli Meng¹, Weishu Fu^1,*, Jianzeng Shen^2,*, Yisheng Su^1,2, Chunying Ye¹

Journal of Renewable Materials, Vol.11, No.2, pp. 581-598, 2023, DOI:10.32604/jrm.2022.022074

Abstract Different rubber aggregates lead to changes in the effect of stress conditions on the mechanical behavior of concrete, and studies on the triaxial properties of self-compacting rubber concrete (SCRC) are rare. In this study, 35 cylindrical specimens taking lateral stress and rubber type as variables were prepared to study the fresh properties and mechanical behaviors of SCRC under triaxial compression, where the rubber contains two types, i.e., 380 μm rubber powder and 1–4 mm rubber particles, and four contents, i.e., 10%, 20% and 30%. The test results demonstrated that SCRC exhibited a typical oblique shear failure mode under triaxial compression… More > Graphic Abstract

Ben Li¹, Na Li^1,*, Chulei Fang¹, Jun Hu^2,*, Rong Yu³, Longxin Shu¹, Kai Yao³, Fang Zhang¹

Journal of Renewable Materials, Vol.10, No.6, pp. 1693-1710, 2022, DOI:10.32604/jrm.2022.018475

Abstract In order to study the mechanical properties and micro-mechanism of industrial waste fly ash-reinforced cement calcareous sand (FCS), the triaxial unconsolidated undrained (UU) test and scanning electron microscope tests (SEM) were carried out on it. The results of UU test show that the peak stress and energy dissipation of the FCS sample first increase and then decrease with the increase in fly ash content. Fly ash enhances the cement calcareous sand by increasing both the cohesion and internal friction angle, and adding 10% content of fly ash gives the largest values. The SEM test results shows that the hydration products… More >