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由于普通混凝土存在抗折强度较低、易发生脆性破坏等缺点,目前越来越多的纤维掺加技术应用在水泥混凝土领域,来进一步地提高水泥混凝土的抗折强度和改善其脆性。玄武岩纤维作为一种常用于掺加在混凝土中的材料,相比于钢纤维、聚丙烯等纤维拥有更高的性价比,主要是其改善抗折强度和抗裂性能更好。采用正交试验方法,分析纤维掺量、纤维长度、纤维直径和水灰比四因素对混凝土的抗压强度和抗折强度的影响程度。研究结果表明水灰比改善水泥混凝土抗压强度性能最为明显,纤维掺量在改善水泥混凝土的抗弯拉性能方面较其他因素更为明显。
Due to the disadvantages of ordinary concrete, such as low flexural strength and brittle failure, more and more fiber splicing techniques are applied in the field of cement concrete to further improve the flexural strength and improve the brittleness of cement concrete. Basalt fiber, as a material commonly used in concrete, has higher cost performance than steel fiber and polypropylene, mainly because it has better flexural strength and crack resistance. Orthogonal experiment method was used to analyze the influences of fiber content, fiber length, fiber diameter and water-cement ratio on the compressive strength and flexural strength of concrete. The results show that the water-cement ratio is the most obvious for improving the compressive strength of cement-concrete, and the fiber content is more obvious than other factors in improving the flexural-tensile performance of cement concrete.