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http://dx.doi.org/10.5345/JKIBC.2013.13.5.491

Mix Design of Lightweight Aggregate Concrete and Determination of Targeted Dry Density of Concrete  

Yang, Keun-Hyeok (Department of Plant.Architectural Engineering, Kyonggi University)
Publication Information
Journal of the Korea Institute of Building Construction / v.13, no.5, 2013 , pp. 491-497 More about this Journal
Abstract
The objective of the present study is to establish a straightforward mixture proportioning procedure for structural lightweight aggregate concrete (LWAC), and evaluate the selection range of the targeted dry density of concrete against the designed concrete compressive strength. In developing this procedure, mathematical models were formulated based on a nonlinear regression analysis over 347 data sets and two boundary conditions of the absolute volume and dry density of concrete. The proposed procedure demonstrated the appropriate water-to-cement ratio and dry density of concrete to achieve the designed strength decrease with the increase in volumetric ratio of coarse aggregates. This trend was more significant in all-LWAC than in sand-LWAC. Overall, the selection range of the dry density of LWAC exists within a certain range according to the designed strength, which can be obtained using the proposed procedure.
Keywords
lightweight aggregate concrete; mixture proportioning; dry density; compressive strength;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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