Open AccessComparative study on properties of recycled concrete mixed with slag and polypropylene fiber/steel fiber
Author(s) -
Jinmiao Fang,
Han Zhi-yong,
Qingyun Ge,
Bin Zhu,
Wenli Li
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1904/1/012018
Subject(s) - materials science , absorption of water , ultimate tensile strength , composite material , aggregate (composite) , flexural strength , fiber , compressive strength , slag (welding) , polypropylene , composite number , cement , properties of concrete
In order to study the effect of fiber and slag on the performance of high performance recycled aggregate concrete, polypropylene fiber/steel fiber and slag are selected as admixtures, in which fiber is used as admixture and slag is equivalent to replace cement content. The influence of recycled aggregate content, admixture formula and admixture on the mechanical and water absorption properties of high performance recycled concrete and its improvement effect were analyzed systematically. The results showed that when the slag is added, the early mechanical properties of concrete have little effect, the later is slightly improved, but the water absorption of concrete is improved significantly. Adding fiber can not only improve the compressive strength, splitting tensile strength and flexural tensile strength of high performance recycled concrete, but also significantly improve the water absorption properties. Fiber and slag composite modified material can bond concrete mixture into a whole and improve the density of the mixture.