Utilizing Ultra-High Performance Concrete Overlay for Road Pavement Repair and Strengthening Applications-Reference-Cited by-同舟云学术

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

Published:2023-09-28 Issue:4 Volume:8 Page:290-302
ISSN:2518-2994
Container-title:Advances in Technology Innovation
language:
Short-container-title:Adv. technol. innov.

Author:

Lay Boon Tan ,Milad Hafezolghorani ,Azman Mohamed ,Khaled Ghaedi ,Yen Lei Voo

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.

Publisher

Taiwan Association of Engineering and Technology Innovation

Subject

Management of Technology and Innovation,General Engineering,Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Environmental Engineering,General Computer Science

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