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重庆交通大学学报（自然科学版）

重庆交通大学学报（自然科学版） ›› 2014, Vol. 33 ›› Issue (1): 52-54.DOI: 10.3969/j.issn.1674-0696.2014.01.12

• • 上一篇    下一篇

水泥路面再生混凝土主要路用性能研究

孙吉书1,2，窦远明1，刘熙嫂1   

  1. 1. 河北工业大学土木工程学院，天津300401;2 河北省土木工程技术研究中心，天津300401
  • 收稿日期:2012-12-31 修回日期:2013-03-13 出版日期:2014-02-15 发布日期:2015-01-22
  • 作者简介:孙吉书(1976-) ，男，河北广宗人，副教授，博士，主要从事道路工程方面的研究。E-mail:sunjishu76@126. com
  • 基金资助:
    河北省高等学校科学研究计划项目(Q2012156 )

Main Performances of Recycled Aggregate Concrete in Pavement Construction

Sun Jishu 1,2 , Dou Yuanming 1 , Liu Xiyuan1   

  1. 1. Schoo1 of Civil Engineering , Hebei University of Techno1ogy , Tia可in 300401 , China; 2. Civi1 Engineering Techno1ogy Research Center of Hebei Province , Tianjin 300401 , China
  • Received:2012-12-31 Revised:2013-03-13 Online:2014-02-15 Published:2015-01-22

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摘要： 通过系统的试验研究，获得了旧水泥路面板再生混凝土的主要路用性能技术指标(抗压强度、弯拉强度、耐磨 性能等)及其随各种原材料与配合比因素的变化规律，并且分析了粉煤灰掺量对再生混凝土耐磨性能的影响规律， 结果表明:旧水泥路面板破碎后再生骨料在骨料中的掺入量对再生泪凝土的抗压强度、弯拉强度、耐磨性能等路用 性能具有显著的影响，与相同配合比的新骨料i昆凝土相比较，再生混凝土28 d 龄期的抗压强度约低5.3% - 23.3% , 弯拉强度要低6.4% -19.6% ，单位磨损量增大3.8% -25.8% ，适量粉煤灰的掺入能够改善再生混凝土的耐磨性 能，再生1昆凝土的主要技术性能符合相关要求，可以作为新建水泥路面的建筑材料O

关键词: 再生混凝土, 水泥路面, 抗压强度, 弯拉强度, 耐磨性

Abstract: Through systemic experiments , the main technica1 indexes of the app1ication of recycled aggregate concrete product from waste cement pavement in pavement construction were presented , which included compressive strength , f1exural strength and wear resistance. And their changing 1aws with raw material and mix ratio were then studied. The effects of f1y ash on wear resistant abi1ity of recycled aggregate concrete were a1so ana1yzed. The results indicate that the content of recy- , cled aggregate concrete obtained from the fracture of old pavement slab has significant effect on the performances of recycled aggregate concrete , including compressive strength , f1exura1 strength and wear resistance. Compared with the same mix ratio of the new aggregate concrete , the compressive strength and f1exura1 strength of recycled aggregate concrete in 28 days age decrease by 5.3% - 23.3% and 6.4% -19.6% respective1y , and the unit abrasion 10ss increases by 3.8% - 25.85%. Mixed with the optimal amount of f1y ash can improve the wear resistant abi1ity of recycled concrete. The main technica1 properties of the recycled aggregate concrete conform to the current specification and the recycled aggregate concrete can be used in the new pavement construction.

Key words: recycled aggregate concrete, concrete pavement, compressive strength, f1exura1 strength, wear resistance

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