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http://dx.doi.org/10.4334/JKCI.2016.28.4.427

Mixture Proportioning Approach for Low-CO2 Lightweight Aggregate Concrete based on the Replacement Level of Natural Sand  

Jung, Yeon-Back (Building Works Structural Design Team, Hyundai Engineering & Construction)
Yang, Keun-Hyeok (Department of Plant.Architectural Engineering, Kyonggi University)
Tae, Sung-Ho (School of Architecture & Architectural Engineering, Hanyang University)
Publication Information
Journal of the Korea Concrete Institute / v.28, no.4, 2016 , pp. 427-434 More about this Journal
Abstract
The purpose of this study is to propose a mixture proportioning approach based on the replacement level of natural sand for reducing $CO_2$ emissions from artificial lightweight aggregate concrete(LWAC) production. To assess the effect of natural sand on the reduction of $CO_2$ emissions and compressive strength of LWAC, a total of 379 specimens compiled from different sources were analyzed. Based on the non-linear regression analysis using the database and the previous mixture proportioning method proposed by Yang et al., simple equations were derived to determine the concrete mixture proportioning and the replacement level of natural sand for achieving the targeted performances(compressive strength, initial slump, air content, and $CO_2$ reduction ratio) of concrete. Furthermore, the proposed equations are practically applicable to straightforward determination of the $CO_2$ emissions from the provided mixture proportions of LWAC.
Keywords
low-$CO_2$ concrete; lightweight aggregate concrete; natural sand; mixture proportioning;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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