摘   要：研究了钢纤维的掺量（0、0.2%、0.4%、0.6%）、尺寸（直径0.12~0.30 mm、长度6~25 mm）及形状（平直形、弯钩形）、粗骨料粒径（4.75~9.50 mm、10.00~15.00 mm）对透水混凝土透水、力学及耐久性能的影响，并通过CT扫描技术揭示了钢纤维在透水混凝土中的分布情况。结果表明：当采用掺量为0.4%、直径为0.12 mm、长度为10 mm的平直形钢纤维时，透水混凝土的透水、力学、抗剥落、抗冲击和抗冻性能均较好；与粗骨料粒径为4.75~9.50 mm的透水混凝土相比，钢纤维对粗骨料粒径为10.00~15.00 mm的透水混凝土孔隙率及透水系数的增大效果更明显，且抗压强度更高；钢纤维改性透水混凝土的长期力学性能较好。Abstract: The effects of steel fiber content (0, 0.2%, 0.4%, 0.6%), steel fiber size (diameter of 0.12~0.30 mm, length of 6~25 mm), steel fiber shape (flat, hooked), and coarse aggregate particle size (4.75~9.50 mm, 10.00~15.00 mm) on the permeability, mechanical properties, and durability of pervious concrete were studied, and the distribution of steel fibers in pervious concrete was revealed through CT scanning technology. The results show that when using flat steel fibers with the content of 0.4%, the diameter of 0.12 mm, and the length of 10 mm, the permeability, mechanical properties, anti-stripping performance, impact resistance, and frost resistance of pervious concrete are all good. Compared with pervious concrete with coarse aggregate particle size of 4.75~9.50 mm, steel fibers have a more significant effect on increasing the porosity and permeability coefficient of pervious concrete with coarse aggregate particle size of 10.00~15.00 mm, and have higher compressive strength. The long-term mechanical properties of steel fiber modified pervious concrete are good.

田洋,庞琦,余帆.钢纤维改性透水混凝土的透水、力学及耐久性能试验研究[J].混凝土与水泥制品,2026,53(3):53-59. TIAN Y,PANG Q,YU F.Experimental study on permeability, mechanical properties and durability of steel fiber modified pervious concrete[J].China Concrete and Cement Products,2026,53(3):53-59 (in Chinese).

摘   要：对比分析了钢纤维、玄武岩纤维、聚乙烯醇（Polyvinyl alcohol，PVA）纤维的掺入方式（单掺、混掺）对道路快速修补砂浆性能的影响，测试了不同类型纤维增强砂浆的流动度、收缩率、抗折强度、抗压强度、折压比及黏结强度。结果表明：掺入纤维虽然使得快速修补砂浆的初始流动度降低，但20 min流动度损失减小；总体而言，单掺或混掺纤维会使砂浆的抗折强度和抗压强度有所降低，但能有效改善砂浆的收缩性能、韧性及黏结性能，其中，单掺玄武岩纤维或混掺玄武岩纤维与PVA 纤维的改善效果相对较好。Abstract: A comparative analysis was conducted on the effects of the addition methods (single addition or compound addition) of steel fiber, basalt fiber, and polyvinyl alcohol (PVA) fiber on the performance of road rapid repair mortar. The fluidity, shrinkage rate, flexural strength, compressive strength, flexural-to-compression strength ratio, and bond strength of different types of fiber reinforced mortar were tested. The results show that although the addition of fibers reduces the initial fluidity of the rapid repair mortar, the loss of fluidity after 20 min is reduced. Overall, the single addition or compound addition of fibers can reduce the flexural and compressive strength of mortar, but can effectively improve the shrinkage, toughness, and bond properties of mortar. Among them, the improvement effect of single addition of basalt fibers or compound addition of basalt fibers and PVA fibers is relatively better.

叶家彬,孙立喆,张北春,等.纤维对快速修补砂浆工作性、收缩性能和力学性能的影响研究[J].混凝土与水泥制品,2026,53(3):47-52. YE J B,SUN L Z,ZHANG B C,et al.Study on the influence of fibers on the workability, shrinkage performance, and mechanical properties of rapid repair mortar[J].China Concrete and Cement Products,2026,53(3):47-52 (in Chinese).