超高性能混凝土制备薄壁排水管的试验研究

发布时间：2018-03-25 11:01

本文选题：超高性能混凝土　切入点：排水管　出处：《混凝土》2017年10期

【摘要】：传统混凝土排水管在使用中存在耐久性差等问题,由于是隐蔽工程,维修和重建费用很高,无法满足可持续混凝土发展的需要。超高性能混凝土是一种新兴的高性能水泥基材料,在国内尚未有研究将其应用于排水管领域。利用超高性能混凝土,开展了超高性能混凝土排水管制备方法及力学性能的研究。研究结果表明,利用泵送顶升工艺,能够制备出薄壁超高性能混凝土排水管,且管道内壁非常光滑,有利于提高过流能力;在壁厚减少25%的情况下,利用超高性能混凝土制备的内径400 mm排水管的初裂荷载及破坏荷载能够达到GB/T 11836—2009《混凝土和钢筋混凝土排水管》中普通钢筋混凝土II级管要求;环筋间距150 mm的超高性能混凝土配筋管,初裂荷载较GB/T 11836—2009中普通钢筋混凝土III级管高65.4%,破坏荷载则高了39.6%。
[Abstract]:The traditional concrete drain pipe problems of poor durability in use, because it is a hidden engineering, maintenance and reconstruction costs are high, unable to meet the needs of sustainable development. The concrete ultra high performance concrete is a new kind of high performance cementitious materials, in the domestic research has not been applied in the field of the drainage pipe. Ultra high performance concrete, carried out the research of preparation and mechanical properties of ultra high performance concrete drainage control. The results showed that the pumping process, can be prepared by ultra high performance concrete drainage pipe and pipe wall, the wall is very smooth, is conducive to improve the flow capacity; a decrease in the wall thickness of 25% under the condition of using ultra high performance concrete prepared with diameter of 400 mm drainage pipe crack load and the failure load can reach 11836 GB/T - 2009< concrete and reinforced concrete drain pipe reinforced concrete > II Pipe requirements; the diameter of the reinforced concrete pipe with the spacing of 150 mm is higher than that of GB/T 11836 to 2009, the ordinary reinforced concrete III pipe is 65.4% higher, and the failure load is higher than 39.6%..

【作者单位】：华南理工大学土木与交通学院;华南理工大学亚热带建筑科学国家重点实验室;广东利盈投资集团有限公司;
【基金】：华南理工大学亚热带建筑科学国家重点实验室自主研究课题项目(2016KB14) 国家大学生创新创业训练计划项目(201410561024)
【分类号】：TU528.73

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