Mechanical Properties of Solid Waste Based Artificial Aggregate Concrete
HAN Dandan
CHEN Yonghui
KONG Gangqiang
CHEN Geng
CHEN Long
Abstract：Based on hydrothermal solidification technology,solid waste based artificial aggregate(AA)were prepared from solid wastes such as silt,carbide slag,and boron mud to partially replace natural aggregates in concrete production.The hydrothermal solidification micro-mechanism and fundamental properties of AA were analyzed,and the impact of AA on the compressive strength and volumetric stability of concrete was investigated.The results demonstrate the feasibility of partially replacing natural aggregates with artificial aggregates in concrete.When the replacement ratio of artificial aggregates is 25%at 100%saturation,the 28 d compressive strength of concrete with water-cement ratios of 0.55 and 0.40 reache 32.0 MPa and 38.3 MPa,respectively.AA improves the volumetric stability of concrete and accelerates the hydration process.At a 100%replacement ratio of AA,the 28 d autogenous shrinkage of concrete with a water-cement ratio of 0.40 is reduced by approximately 74%.
Keywords：artificial aggregatehydrothermal solidificationcompressive strengthshrinking
Publication Date：2025-05-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：9( 449-457 )