Title: Multi-Approaches to Improve Internally Cured Concrete for Rigid Pavement Application (Open Source)

Author(s): Sangyoung Han, Thanachart Subgranon, Hung-Wen Chung, Kukjoo Kim, and Mang Tia

Publication: Materials Journal

Volume: 121

Issue: 3

Appears on pages(s): 29-42

Keywords: critical stress analysis; full-scale test slabs; internally cured concrete (ICC); optimized aggregate gradation (OAG); polymeric microfibers (PMFs); shrinkage-reducing admixture (SRA)

DOI: 10.14359/51740564

Date: 5/1/2024

Abstract:
A comprehensive laboratory testing program, field-testing program, numerical analysis, and life-cycle cost analysis were conducted to evaluate the beneficial effects of incorporating shrinkage-reducing admixture (SRA), polymeric microfibers (PMFs), and optimized aggregate gradation (OAG) into internally cured concrete (ICC) mixtures for rigid pavement applications. Results from the laboratory program indicate that all the ICC mixtures outperformed the standard concrete (SC) mixture. All the ICC mixtures showed a decrease in drying shrinkage compared to the SC mixture. Based on the laboratory program, three ICC mixtures and one SC mixture were selected for the full-scale test and subjected to a heavy vehicle simulator for accelerated fatigue testing. Extensive testing and analysis have shown that ICC mixtures incorporating SRA, PMFs, and OAG can be beneficially used in pavement applications to achieve increased pavement life.