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http://dx.doi.org/10.5345/JKIBC.2018.18.2.133

Mix Design Procedure of Structural Concrete Using Artificial Lightweight Aggregates Produced from Bottom Ash and Dredged Soils  

Lee, Kyung-Ho (Department of Architectural Engineering, Graduate School, Kyonggi University)
Yang, Keun-Hyeok (Department of Plant.Architectural Engineering, Kyonggi University)
Publication Information
Journal of the Korea Institute of Building Construction / v.18, no.2, 2018 , pp. 133-140 More about this Journal
Abstract
The objective of this study is to propose a reliable mixing design procedure of concrete using artificial lightweight aggregate produced from expanded bottom ash and dredged soil. Based on test results obtained from 25 mixes, empirical equations to determine water-to-cement ratio, unit cement content, and replacement level of lightweight fine aggregates were formulated with regard to the targeted performance (compressive strength, dry density, initial slump, and air content) of lightweight aggregate concrete. From the proposed equations and absolute volume mixing concept, unit weight of each ingredient was calculated. The proposed mix design procedure limits the fine aggregate-to-total aggregate ratio by considering the replacement level of lightweight fine aggregates, different to previous approach for expanded fly ash and clay-based lightweight aggregate concrete. Thus, it is expected that the proposed procedure is effectively applied for determining the first trial mixing proportions for the designed requirements of concrete.
Keywords
lightweight aggregate concrete; mix design; target performance;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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