摘   要：通过正交试验研究了粉煤灰、硅灰和玄武岩纤维对混凝土力学性能的影响，结合SPSS软件对试验数据进行了统计分析，运用极差分析方法得到了各因素对混凝土力学性能影响的主次顺序。结果表明：随着粉煤灰掺量的增加，混凝土各龄期的力学性能呈下降趋势；随着硅灰掺量的增加，混凝土各龄期的力学性能呈上升趋势；随着玄武岩纤维掺量的增加，混凝土的抗压强度基本不变，劈裂抗拉强度得到一定提升；当粉煤灰掺量为10%、硅灰掺量为6%、玄武岩纤维掺量为0.45%时，混凝土各龄期的抗压强度和劈裂抗拉强度均最高。 Abstract: The effects of fly ash, silica fume and basalt fiber on the mechanical properties of concrete were studied by orthogonal test, and the test datas were statistically analyzed by SPSS software, and the primary and secondary order of the influence of various factors on the mechanical properties of concrete was obtained by using the range analysis method. The results show that the mechanical properties of concrete at each age decrease with the increase of fly ash content. With the increase of silica fume content, the mechanical properties of concrete at each age show an upward trend. With the increase of basalt fiber content, the compressive strength of concrete is basically unchanged, and the splitting tensile strength is improved to a certain extent. When the fly ash content is 10%, silica fume content is 6% and basalt fiber content is 0.45%, the compressive strength and splitting tensile strength of concrete at each age are the highest.

惠存,王森林,李克,等.矿物掺合料和纤维复掺对混凝土力学性能的影响研究[J].混凝土与水泥制品,2021(12):55-58. HUI C,WANG S L,LI K,et al.Influence of Mineral Admixture and Fiber on the Mechanical Properties of Concrete[J].China Concrete and Cement Products,2021(12):55-58

摘   要：研究了水胶比和矿物掺合料掺量对超高性能混凝土（UHPC）工作性的影响，分析了砂种类对UHPC力学性能的影响。结果表明：增大水胶比、矿渣粉掺量、粉煤灰掺量均可改善UHPC的工作性，而增大硅灰掺量会降低UHPC的工作性；掺入1%的钢纤维可显著提高UHPC的力学性能；海砂、江砂取代石英砂会使UHPC的抗压强度和抗折强度均有不同程度的降低，机制砂取代石英砂会使UHPC的抗压强度增加、抗折强度降低。 Abstract: The influence of water binder ratio and mineral admixtures content on the working performance of ultra-high performance concrete(UHPC) was studied, and the influence of sand type on the mechanical properties of UHPC was analyzed. The results show that increasing the water binder ratio, slag powder content and fly ash content can improve the working performance of UHPC, but increasing silica fume content can reduce the working performance of UHPC. Adding 1% steel fiber can significantly improve the mechanical properties of UHPC. Replacing quartz sand with sea sand and river sand can reduce the compressive strength and flexural strength of UHPC to varying degrees. Replacing quartz sand with machine-made sand can increase the compressive strength and reduce the flexural strength of UHPC.

王冠,李炜,葛文杰,等.不同因素对超高性能混凝土工作性及力学性能的影响[J].混凝土与水泥制品,2021(12):50-54. WANG G,LI W,GE W J,et al.Influence of Different Factors on the Workability and Mechanical Properties of Ultra-high Performance Concrete[J].China Concrete and Cement Products,2021(12):50-54.

摘   要：研究了不同掺量的玄武岩纤维对3D打印再生水泥基材料工作性与力学性能的影响。结果表明：当玄武岩纤维掺量为0.3%~0.5%时，可满足3D打印所需的流动性、可挤出性、可建造性、凝结时间等要求，且所制备的3D打印再生水泥基材料的抗压与抗折性能均较好。 Abstract: The effects of different contents of basalt fiber on the workability and mechanical properties of 3D printed recycled cement-based materials were studied. The results show that when the content of basalt fiber is 0.3%~0.5%, it can meet the requirements of fluidity, extrudability, constructability and setting time for 3D printing, and the compressive and flexural properties of the prepared 3D printed recycled cement-based materials are good.

余盈,李犇,许亮军,等.玄武岩纤维对3D打印再生水泥基材料性能的影响研究[J].混凝土与水泥制品,2021(12):45-49. YU Y,LI B,XU L J,et al.DENG Yu-xuan,Research on the Influence of Basalt Fiber on the Properties of 3D Printed Recycled Cement-based Materials[J].China Concrete and Cement Products,2021(12):45-49.