The effects of steel fiber length and dosage on the workability and mechanical properties of fly ash-slag based geopolymer were investigated using the controlled variable method.The experimental results showed that the length and dosage of steel fibers had little effect on the setting time of the geopolymer.The initial fluidity of the geopolymer gradually decreased as the length and the amount of steel fibers incorporated increases.Steel fibers had obvious enhancement effects on compressive strength,flexural strength,flexural-compression ratio of flexural strength to compressive strength,equivalent flexural strength,and equivalent flexural toughness of geopolymers,and long steel fibers were better than short steel fibers.
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