钢纤维改性透水混凝土的透水、力学及耐久性能试验研究
Experimental study on permeability, mechanical properties and durability of steel fiber modified pervious concrete
关键词：
透水混凝土；钢纤维；改性；透水性能；力学性能；抗剥落性能；抗冲击性能；抗冻性能；长期性能
Key words：
Pervious concrete; Steel fiber; Modification; Permeability; Mechanical property; Anti-stripping performance; Impact resistance; Frost resistance; Long-term performance
刊期：
2026年第3期
DOI：
10.19761/j.1000-4637.25010042
文章编号：
基金项目：
作者：
田 洋1，庞 琦2，*，余 帆3
单位：
1.长江勘测规划设计研究有限责任公司，湖北 武汉 430010；2.中建长江佳成（四川）水利工程有限 公司，四川 成都 610213；3.三峡大学 土木与建筑学院，湖北 宜昌 443002
摘要
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.
结论
（1）钢纤维的掺量、尺寸及形状对透水混凝土的孔隙率、透水系数和抗压强度有影响，实际应用时，应根据工程需求选用合适尺寸和形状的钢纤维，并合理控制其掺量。本试验中，直径为0.12 mm、长度为10 mm的平直形钢纤维为最佳选择。
（2）总体上，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。
（3）掺入适量钢纤维可显著提升透水混凝土的抗剥落、抗冲击及抗冻性能。
（4）即使长期与水及空气接触，钢纤维改性透水混凝土的抗压强度仍有一定增长趋势，长期力学性能仍能得到很好保障。
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引用本文
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).
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