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http://dx.doi.org/10.5762/KAIS.2019.20.11.416

Plastic Shrinkage Cracking Reduction of Press Concrete Using Admixtures in Basement  

Kim, Young-Su (Division of Architectural Engineering, Pusan National University)
Lee, Dong-Un (Division f Architecture & Civil Engineering, Dongseo University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.20, no.11, 2019 , pp. 416-424 More about this Journal
Abstract
In Korea, press concrete in basements is mainly applied using plain concrete. This system has undesirable defects such as cracks caused by plastic shrinkage and irregular temperature distribution. To solve this problem, metal lath and fibers have been used in the past. However, they have not been effective in controlling cracks. This study analyzed the reduction of plastic shrinkage cracking for press concrete using various admixtures in a basement has been. In the air contents test, the specimens with various admixtures showed air contents similar to plain concrete (4.5±1.5%). The specimens using silica fume, super plasticizer agent, and SBR showed higher compressive strength by about 10-15% than plain concrete. Cracking decreased when the MC, super plasticizer, and SBR were added. When MC was used in the concrete, the plastic shrinkage did not occur.
Keywords
Press Concrete; Various Admixture; Slump; Compressive Strength; Plastic Shrinkage;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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