中文摘要：

本文试验研究钢纤维、聚丙稀纤维、玄武岩纤维的单掺和混掺对全轻混凝土力学性能的影响.试验结果表明：全轻混凝土中单掺或混掺纤维对其抗压强度和轴心抗压强度提高较小,而对劈裂抗拉强度提高较大.其中,钢纤维对于全轻混凝土强度提高效果优于聚丙稀纤维和玄武岩纤维;从试件受压破坏状态分析,双掺纤维比单掺纤维破坏延性较好,能够发挥不同纤维的特点,与全轻混凝土破坏相比具有坏而不碎的特点.通过分析三种纤维的混杂效应,混掺钢纤维和玄武岩幹维对于提高全轻混凝土力学性能达到最优,且钢幹维成为影响其混杂效应的主要因素.

英文摘要：

The experiment studies the effect on the mechanical properties of all-lightweight concrete （ALWC）in which steel fiber （SF） , polypropylene fiber （PPF） and basalt fiber （BF） are incorporated with a single incorporationand mixed one. The compressive strength and axial compressive strength of the single or mixed fiberin all lightweight concrete are small, but the splitting tensile strength is improved greatly. The effect ofsteel fiber on the strength of all light concrete is better than that of polypropylene fiber and basalt fiber. Fromthe analysis of compressive failure condition of specimens, the damage ductility of double fiber fibers is betterthan that of single fiber, and the characteristics of different fibers can be played. Compared with the damage ofthe whole lightweight concrete, it has the characteristics of bad and not broken ; By analyzing the hybrid effectof three kinds of fibers, the blending of steel fiber and basalt fiber can improve the mechanical properties ofthe whole light concrete, and the steel fiber becomes the main factor affecting the hybrid effect.