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http://dx.doi.org/10.4334/JKCI.2017.29.1.003

Economic Analysis with Development of Rapid Setting Alumina-based Binder for Road Repair  

Yang, Hee-Jun (Department of Civil and Environmental Engineering, Hanyang University)
Yang, Min-Jae (Department of Civil and Environmental Engineering, Hanyang University)
Hong, Sung-In (Department of Civil and Environmental Engineering, Hanyang University)
Ann, Ki-Yong (Department of Civil and Environmental Engineering, Hanyang University)
Publication Information
Journal of the Korea Concrete Institute / v.29, no.1, 2017 , pp. 3-10 More about this Journal
Abstract
In case of Korea highways, about 60% of highways are paved by concrete and more than 50% of them were repaired due to reduction in required performance such as damage in pave or joint and delamination of cover pavement. However, repairing old material in such structure generally costs a lot of money and induces difficulty in maintenance. Thus, enhanced material for ensuring economic efficiency should be developed. The present study designed concrete mixtures with 3 levels of replacement using OPC (0, 10, 20%) in calcium aluminate cement and to evaluate material performance for load pavement, experimental works for setting time, compressive strength and flexural strength were carried out on those materials. As a result, 20% replacement for OPC was determined as an optimized material in terms of required physical performance and its unit price. Moreover, to determine cost in load pavement economy analysis using a program (CA4PRS) was conducted with widely used paving materials. Result showed that application for 20% replacement for OPC was the most efficient in economical aspect, arising from 4.052 and 1.577 billion won for total construction and user cost, respectively.
Keywords
repair material; calcium alumina cement; highway; material performance; economy analysis;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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