为了研究玄武岩纤维在RPC(reactive powder concrete,活性粉末混凝土)中的作用效果,以玄武岩纤维体积掺量、纤维长度、RPC水胶比和养护龄期为参数,对玄武岩纤维RPC的劈裂抗拉强度和立方体抗压强度进行了试验研究.试验结果表明:对于掺入12 mm长玄武岩纤维的RPC,最佳水胶比为0.22,最佳纤维体积掺量为0.10%,其劈拉强度较未掺纤维的RPC提高了38.53%.对于掺入6 mm长玄武岩纤维的RPC,最佳纤维体积掺量为0.05%,其劈拉强度较未掺纤维的RPC提高了27.16%.
In order to research the effect of basalt fiber in reactive powder concrete, the splitting tensile strength test and the cube compressive strength test of basalt fiber reinforced reactive powder concrete with the parameters like the content of the fiber, the length of fiber, the water-binder ratio of reactive powder concrete and the age of the concrete were conducted.The results show that for the reactive powder concrete mixed with basalt fiber whose length is 12 mm, the best water-binder ratio is 0.22 and the best volume content is 0.10%, and the splitting tensile strength improves 38.53% compared to the reactive powder concrete without fiber.For the reactive powder concrete mixed with basalt fiber whose length is 6 mm, the best volume content is 0.05%, and the splitting tensile strength improves 27.16% compared to the reactive powder concrete without fiber.
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