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http://dx.doi.org/10.11112/jksmi.2016.20.3.122

Absorption Properties of Coarse Aggregate according to Pressurization for Development of High Fluidity Concrete under High Pressure Pumping  

Choi, Yun-Wang (세명대학교 토목공학과)
Choi, Byung-Keol (세명대학교 건설공학과)
Oh, Sung-Rok (세명대학교 건설공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.20, no.3, 2016 , pp. 122-129 More about this Journal
Abstract
In this study, we developed a pressing device which can reproduce the pressure of concrete inside the conveying pipe as a part of the basic study to development of high fluidity concrete under high pressure pumping. Using this pressing device, we evaluated a absorption properties of aggregate that are crushed coarse aggregate, river gravel and lightweight coarse aggregate according to pressure of coarse aggregate and aggregate inside a high fluidity concrete, focused on the reduction of unit water quantity by pressure. In addition, it was evaluated the compressive strength of high fluidity concrete about before and after of pressive. Test a result, case of condition under the high pressure of 250 bar, absorption ratio of crushed coarse aggregate and river gravel were not increased above the surface absorption, absorption ratio of lightweight coarse aggregate was increased than the surface absorption.
Keywords
High Pressure Pumping; High Fluidity Concrete; Pressurization; Coarse Aggregate; Absorption;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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