期刊论文

Durability performance research on permeable concrete with rigid polypropylene fiber

中文

混凝土

1002-3550

2017

1

133-136

10.3969/j.issn.1002-3550.2017.01.033

国家自然科学基金项目（51474168）；

本校为第一机构

为研究刚性聚丙烯纤维的掺入对透水混凝土材料耐久性能的影响,试验室中对4种掺量的钢纤维改性透水混凝土分别进行了冻融循环试验和硫酸盐干湿循环试验。研究表明随着纤维掺量的增加,透水混凝土的抗冻融性能和抗硫酸盐干湿循环性能均有提升,1%体积掺量的刚性聚丙烯纤维改性透水混凝土具备较好的耐久性能。对透水混凝土的冻融指标评定应以质量损失率为主,纤维一定程度上承担了基体冻融过程中的体积膨胀应力和硫酸盐循环中的结晶压力,对透水混凝土有效的发挥了阻裂和增强作用。

In order to study the durability performance of permeable concrete with rigid polypropylene fiber, four groups specimens with different volume ratio of polypropylene fiber are tested.Experiments show that with the increase of polypropylene fiber, the freeze-thaw resistance property and dry-wet cycle property of permeable concrete are enhanced.Permeable concrete with 1% volume ratio fiber has better durability performance.The mass loss ratios should be the key factor for the freeze-thaw index of permeable concrete.Fibers take parts stress of volume expansion while the permeable concrete endure ...