Experimental study and finite element analysis of axial compressive performance of PVC-SWM confined coal gangue ceramsite square column

Structures, Journal Year: 2024, Volume and Issue: 70, P. 107756 - 107756

Published: Nov. 15, 2024

Language: Английский

The Relationship between the Fresh Sludge Ceramsite Concrete’s Fluidity and the Sludge Ceramsite’s Dispersion

Coatings, Journal Year: 2024, Volume and Issue: 14(9), P. 1095 - 1095

Published: Aug. 29, 2024

Sludge ceramsite (SC) can be utilized as a lightweight aggregate in concrete, especially external wall materials, due to the increasing volume of polluted sludge, which contributes water system deterioration and poses greater threats human health. The influence fresh mortar’s slump flow on dispersion was studied. ultrasonic sound velocity, capillary absorption rate, compressive strength, coefficient variation (CV) were measured this study. Thermogravimetric (TG) analysis, ultra depth-of-field microscope scanning, X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectrometry (EDS) used analyze performance mechanism concrete. results indicated that adding SC could reduce fluidity with reduction by rates up 2.04%. addition WRA improve 60.77%. relationship between speed deduced negative correlation. negatively correlated strength. concrete 12.35 12.5 cm reached maximum had lowest absorption, demonstrated internal homogeneity. optimum cm. With cm, corresponding CV lowest, showing SC’s dispersion. Through TG, XRD, SEM analyses, it verified 0.6% promoted hydration cement. In addition, increased products.

Language: Английский

Early-age mesoscale deformation in lightweight aggregate concrete under different water-to-cement ratios and pretreated methods

Archives of Civil and Mechanical Engineering, Journal Year: 2024, Volume and Issue: 25(1)

Published: Nov. 29, 2024

Language: Английский