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混凝土的主要特点是抗压强度高,抗弯拉强度低。而纤维的掺入可提高其抗弯拉强度,进而减少混凝土早期的收缩裂缝,并大大改善混凝土的抗裂性能。本文通过将秸秆纤维,钢纤维,聚丙烯纤维以不同组合方式以相同百分比配合,改变不同的纤维掺入量0.5%,1%,1.5%,拌合混凝土并通过抗压强度,抗折强度测试得出纤维最佳组合配合比,在此配合比作用下性能最优。
The main characteristics of concrete is high compressive strength, low bending strength. The incorporation of fiber can improve its bending strength, thereby reducing the early shrinkage cracks in concrete, and greatly improve the cracking resistance of concrete. In this paper, straw fiber, steel fiber and polypropylene fiber were mixed by the same percentage with different combinations to change the content of different fibers by 0.5%, 1% and 1.5%, and the concrete was mixed and passed the compressive strength and flexural strength test Obtained the best combination of fibers with the ratio of optimal performance under this combination.