摘   要：研究了玄武岩纤维掺量对全再生粗骨料混凝土抗压和抗折强度、破坏形态、单轴受压应力-应变曲线的影响。结果表明：掺入玄武岩纤维后，试件的抗压强度提高，受压破坏时的整体性更好；随着玄武岩纤维掺量的增加，试件的抗折强度逐渐增大，所有抗折试件均为峰值后脆性破坏；随着玄武岩纤维掺量的增加，试件的峰值应力先增大后减小，峰值应变、静压弹性模量和轴压韧性比总体均呈增大趋势。 Abstract: The effects of basalt fiber content on the compressive and flexural strength, failure mode and uniaxial stress-strain curve of fully recycled coarse aggregate concrete were studied. The results show that after adding basalt fiber, the compressive strength of the specimen is improved and the integrity of compression failure is better. With the increase of basalt fiber content, the flexural strength of the specimens increases gradually, and all flexural specimens are brittle failure after peak value. With the increase of basalt fiber content, the peak stress increases first and then decreases, and the peak strain, static elastic modulus and axial compressive toughness ratio increase as a whole.

许安邦,苏炜炜,梁宇涵,等.玄武岩纤维增强全再生粗骨料混凝土力学性能试验研究[J].混凝土与水泥制品,2022(2):56-60. XU A B,SU W W,LIANG Y H,et al.Experimental Study on Mechanical Properties of Basalt Fiber Reinforced Fully Recycled Coarse Aggregate Concrete[J].China Concrete and Cement Products,2022(2):56-60.

摘   要：研究了纳米SiO2和PVA纤维掺量及掺入方式对再生混凝土（RAC）力学性能与抗冲击性能的影响。结果表明：掺入纳米SiO2和PVA纤维均可以显著提高RAC的抗冲击性能；当混掺0.075%的PVA纤维与1.0%纳米SiO2时，RAC抗压强度与抗冲击性能的提高幅度最显著。 Abstract: The influence of the content and blending method of nano-SiO2 and PVA fiber on the mechanical properties and impact resistance of recycled concrete (RAC) was studied. The results show that the impact resistance of RAC can be significantly improved by adding nano-SiO2 and PVA fiber. When 0.075% PVA fiber and 1.0% nano-SiO2 are mixed, the improvement of the compressive strength and impact resistance of RAC is the most significant.

周坚,吴博健,刘伟.纳米SiO2和PVA纤维增强再生混凝土力学性能与抗冲击性能研究[J].混凝土与水泥制品,2022(2):52-55. ZHOU J,WU B J,LIU W.Study on Mechanical Properties and Impact Resistance of Nano-SiO2 and PVA Fiber Reinforced Recycled Concrete[J].China Concrete and Cement Products,2022(2):52-55.

摘   要：利用钢渣粉等质量替代20%、40%、60%、80%的水泥制备了PVA纤维水泥基复合材料胶砂试件，并进行了抗折、抗压试验和薄板四点弯曲试验，分析了钢渣粉对PVA纤维水泥基复合材料力学性能和韧性的影响。结果表明：随着钢渣粉掺量的增加，试件的抗折、抗压强度均呈下降趋势，且抗压强度损失较抗折强度快；当钢渣粉掺量为20%时，试件的抗弯承载力达到最大；当钢渣粉掺量为80%时，试件的韧性和能量吸收能力大幅提高。 Abstract: The mortar specimens of PVA fiber cement-based composites were prepared by replacing 20%, 40%, 60% and 80% cement with steel slag powder. The flexural and compressive tests and thin plate four point bending tests were carried out, and the influence of steel slag powder on the mechanical properties and toughness of PVA fiber cement-based composites was analyzed. The results show that with the increase of steel slag powder content, the flexural strength and compressive strength of the specimens decrease, and the loss of compressive strength is faster than that of flexural strength. When the steel slag powder content is 20%, the flexural bearing capacity of the specimen reaches the maximum. When the steel slag powder content is 80%, the toughness and energy absorption capacity of the specimen are greatly improved.

钟栋青,王路明,胡月阳,等.钢渣粉对PVA纤维水泥基复合材料力学性能与韧性的影响[J].混凝土与水泥制品,2022(2):47-51. ZHONG D Q,WANG L M,HU Y Y,et al.Effect of Steel Slag Powder on the Mechanical Properties and Toughness of PVA Fiber Cement-based Composites[J].China Concrete and Cement Products,2022(2):47-51.