Title: Multi-Approaches to Improve Internally Cured Concrete for Rigid Pavement Application

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

Publication: Materials Journal

Volume:

Issue:

Appears on pages(s):

Keywords: critical stress analysis; full-scale test slabs; internally cured concrete; optimized aggregate gradation; polymeric microfibers; shrinkage-reducing admixture

DOI: 10.14359/51740564

Date: 2/8/2024

Abstract:
A compressive 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 (PMF), and optimized aggregate gradation (OAG) into an internally cured concrete (ICC) mix for rigid pavement application. Results from the laboratory program indicate that all ICC mixes outperformed the standard concrete (SC) mix. All ICC mixes showed a decrease in drying shrinkage compared to the SC mix. Based on the laboratory program, three ICC mixes and one of the SC mixes were selected for the full-scale test subjected to a heavy vehicle simulator for accelerated fatigue testing. Extensive testing and analysis have shown that ICC mixes incorporating SRA, PMF, and OAG can be beneficially used in pavement applications to achieve increased pavement life.