Study on Mechanical Properties of Brucite Fiber-Steel Slag Fine Aggregate Concrete
To further promote the utilization of steel slag and reduce environmental pollution,brucite fiber is introduced.The influence of different steel slag fine aggregates and brucite fiber contents on concrete's compressive and flexural strength is investigated.The performance mechanism of deteriorated concrete with steel slag fine aggregate and the reinforcement mechanism of brucite fiber in concrete with steel slag fine aggregate are discussed.The results show that as the steel slag replacement rate gradually increases,the workability of concrete decreases,and the compressive and flexural strength decreases to different degrees.The combined use of brucite fiber significantly enhances the early strength of concrete with steel slag fine aggregate,compared with 30%steel slag concrete without brucite fiber,the 7 d compressive strength and flexural tensile strength of the concrete with 30%steel slag fine aggregate and 0.2%brucite fiber increase by 15.75%and 10.50%,respectively.Brucite fiber can act as a bridge between hydration products,delay crack development.
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