Ultra high performance concrete (UHPC) was prepared using basalt rock powder, and the effects of steel fiber content (0, 1.
00%, 2.
00%, 3.
00%, 4.
00%, 5.
00%) and basalt fiber content (0, 0.
25%, 0.
50%, 0.
75%, 1.
00%, 1.
25%) on the mechanical properties of UHPC were studied.
The results showed that with the increase of steel fiber content, the 28 day flexural strength and compressive strength of the specimens increased; With the increase of basalt fiber content, the 28 day flexural strength of the specimen significantly improves, while the increase in 28 day compressive strength is relatively small; Under the same dosage, the improvement effect of steel fiber on the mechanical properties of UHPC is better than that of basalt fiber.
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