Experimental Study on Durability of Composite Industrial Waste-Mixed Sand Concrete
YAN Qiyao
LÜ Henglin
HAN Qihang
WU Zhikang
Abstract：In order to realize the low carbon development of concrete,industrial waste and mixed sand were utilized to prepare concrete.The durability of concrete was examined by shrinkage tests,freeze-thaw resistance tests and so on.The results indicate that the incorporation of industrial waste effectively mitigates the shrinkage of concrete.However,the use of mixed sand leads to an increase in early autogenous shrinkage.The carbonation resistance of the concrete is reduced due to a reduction in carbonization materials and a decrease in internal alkalinity.Replacing cement with industrial waste enhances the ability of concrete to resist chloride ion penetration and solidify chloride ions.Conversely,the mixed sand as a fine aggregate significantly diminishes the chloride ion penetration resistance of concrete.The industrial waste and mixed sand don't significantly affect the freeze-thaw resistance of concrete,which is comparable to that of ordinary concrete.
Keywords：industrial wastemixed sandshrinkagefreeze-thawingcarbonizationchloride penetration
Publication Date：2025-07-30
Online Publishing Date：2025-08-18(First online date of this platform, not the publication date of the document)
Pages：7( 655-661 )