摘要
通过试验,研究不同龄期下的高强混凝土,其力学性能随聚丙烯腈纤维及聚丙烯纤维掺量变化的发展规律。研究结果表明:聚丙烯腈纤维的掺入降低了高强混凝土7d、28d抗压强度,而聚丙烯纤维的掺入则不同程度上提高了高强混凝土的7d、28d抗压强度;聚丙烯腈纤维和聚丙烯纤维的掺入均降低了高强混凝土7d抗折强度,而不同程度上提高了28d抗折强度.研究结果可为纤维高强粉煤灰混凝土推广应用于路面工程提供参考.
In this paper, the study focuses on the mechanical properties of the high-strength pavement concrete when the varieties of synthetic fiber are changed. The results show that the polypropylene fiber can effectively improve the compressive strength with the increase of the polypropylene fiber content although the polyacrylonitrile isn＇t. The synthetic fiber also effectively improve the flexural strength at the 28th with the increase of the synthetic fiber content but not at the 7th. The results offer a reference for the engineering applications of fiber-reinforced high-strength fly-ash concrete on the pavement project.
出处
《福建建材》
2008年第3期6-8,共3页
Fujian Building Materials
基金
院科研发展基金资助项目(GY-Z0777)
关键词
合成纤维
路面高强混凝土
粉煤灰
抗压强度
抗折强度
synthetic fiber
high-strength pavement concrete
fly ash： compressive strength
flexural strength
