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http://dx.doi.org/10.14190/JRCR.2017.5.1.076

Strength Properties of Concrete According to Types of High Early Strength Cement and Curing Method  

Chang, Chun-Ho (Department of Civil Engineering, Keimyung University)
Lee, Wang-Sup (Ilsin Concrete co., Ltd.)
Jung, Yong-Wook (Department of COMTEC, Keimyung University)
Chung, Youn-In (Department of Civil Engineering, Keimyung University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.5, no.1, 2017 , pp. 76-84 More about this Journal
Abstract
This study selected a method which uses high early strength cement as a way to reduce the curing time and curing energy source of concrete secondary products and reviewed the improvement in the initial strength of concrete secondary products setting the target strength of the concrete capable of removing the form to 15MPa and the curing time to 6 hours. As a result of the test, the only specimen which achieved the form removal strength of 15 MPa only through atmospheric curing within the target curing time of 6hours was ACC-100, and the specimens of TRC-100 and TRC-50 satisfied the values of 6 hours and 15MPa through steam curing. However, we could see that it was difficult to secure workability in the case of the specimen of ACC-100 due to its high rapid setting property and a retarder such as anhydrous citric acid was required to be used to improve the workability. When we look into the pattern following changes in the water to binder ratio, while, in the case of stream curing, OPC-100, TRC-100, and TRC-50 were all found to satisfy achievement of the form removal strength within 6hours as the water to binder ratio decreased, in the case of atmospheric curing, TRC-100, and TRC-50 achieved 15MPa within 12hours.
Keywords
High early strength cement; Concrete secondary products; Curing method; Early strength; Drying shrinkage;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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