Utilizing Ultra-High Performance Concrete Overlay for Road Pavement Repair and Strengthening Applications

Q3 Engineering Advances in Technology Innovation Pub Date : 2023-09-28 DOI:10.46604/aiti.2023.12587

None Lay Boon Tan, None Milad Hafezolghorani, None Azman Mohamed, None Khaled Ghaedi, None Yen Lei Voo

{"title":"Utilizing Ultra-High Performance Concrete Overlay for Road Pavement Repair and Strengthening Applications","authors":"None Lay Boon Tan, None Milad Hafezolghorani, None Azman Mohamed, None Khaled Ghaedi, None Yen Lei Voo","doi":"10.46604/aiti.2023.12587","DOIUrl":null,"url":null,"abstract":"This study aims to develop a new thixotropic ultra-high-performance concrete (UHPC) overlay for the repair and strengthening of damaged hot mix asphalt (HMA) pavements. The overlay is purposely designed to accommodate the roadway slope of up to 10% due to presence of viscosifying agent materials. The original UHPC materials are comprised of granite aggregate, ultra-fine calcium carbonate, shrinkage-reducing admixture, viscosifying agent, and expansive agent. The study is conducted with three sets of samples provided and considers thixotropic and mitigated shrinkage properties through comparing control (non-thixotropic) overlay 1 (thixotropic), and overlay 2 (thixotropic) mixtures. Based on the obtained results, only overlay 1 corresponds to the minimum requirement for pavement rehabilitation, with 160-200 mm flowability and -545.3 µm/m free shrinkage. As a result, an average 50 mm thick overlay 1 is selected to repair a damaged HMA pavement (1800 m2), while the field implementation procedures and drawing details are also presented in this paper.","PeriodicalId":52314,"journal":{"name":"Advances in Technology Innovation","volume":"65 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2023-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advances in Technology Innovation","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.46604/aiti.2023.12587","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Engineering","Score":null,"Total":0}

引用次数: 0

Abstract

This study aims to develop a new thixotropic ultra-high-performance concrete (UHPC) overlay for the repair and strengthening of damaged hot mix asphalt (HMA) pavements. The overlay is purposely designed to accommodate the roadway slope of up to 10% due to presence of viscosifying agent materials. The original UHPC materials are comprised of granite aggregate, ultra-fine calcium carbonate, shrinkage-reducing admixture, viscosifying agent, and expansive agent. The study is conducted with three sets of samples provided and considers thixotropic and mitigated shrinkage properties through comparing control (non-thixotropic) overlay 1 (thixotropic), and overlay 2 (thixotropic) mixtures. Based on the obtained results, only overlay 1 corresponds to the minimum requirement for pavement rehabilitation, with 160-200 mm flowability and -545.3 µm/m free shrinkage. As a result, an average 50 mm thick overlay 1 is selected to repair a damaged HMA pavement (1800 m2), while the field implementation procedures and drawing details are also presented in this paper.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

利用超高性能混凝土铺装层进行路面修补和加固应用

本研究旨在开发一种新型触变高性能混凝土(UHPC)覆盖层，用于修复和加固受损热拌沥青(HMA)路面。由于增粘剂材料的存在，覆盖层的设计目的是为了适应高达10%的巷道坡度。原UHPC材料由花岗岩骨料、超细碳酸钙、减缩外加剂、增粘剂、膨胀剂等组成。该研究采用了三组样品，通过比较控制(非触变)覆盖层1(触变)和覆盖层2(触变)混合物，考虑了触变和减缓收缩的性能。根据得到的结果，只有铺层1符合路面修复的最低要求，其流动性为160-200 mm，自由收缩率为-545.3µm/m。因此，选择平均50 mm厚的覆盖层1对损坏的HMA路面(1800 m2)进行修复，并给出了现场实施程序和图纸细节。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊