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논문 기본 정보

자료유형
학술저널
저자정보
Hye‑Jin Lee (Kyonggi University) Sanghee Kim (Kyonggi University) Hak‑Young Kim (Kyonggi University) Ju‑Hyun Mun (Kyonggi University) Keun‑Hyeok Yang (Kyonggi University)
저널정보
한국콘크리트학회 International Journal of Concrete Structures and Materials International Journal of Concrete Structures and Materials Vol.16 No.4
발행연도
2022.7
수록면
377 - 386 (10page)

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초록· 키워드

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The mechanical properties of lightweight aggregate concrete developed with the use of bottom ash aggregate (LWAC-BA) as a partial or full replacement of lightweight aggregate differ from those of general lightweight concrete made using natural fine and/or coarse aggregates. The mechanical properties of LWAC-BA are difficult to predict using the existing equations proposed by codes or researchers. Therefore, in this study, empirical equations using nonlinear regression analysis are proposed to predict the mechanical properties of lightweight concrete mixed with bottom ash aggregate, based on the collected measured values from other studies (Yang “Development of replacement technology for ready mixed concrete with bottom ash aggregates”, 2020; Kim et al. Appl Sci, 10: e8016, 2020; Constr Build Mater 273: e121998, 2021). The collected data include density, compressive strength, elastic modulus, modulus of rupture, splitting tensile strength, and stress–strain relation of LWAC-BA featuring varying amounts of bottom ash fine aggregate and/or coarse aggregate. The proposed empirical equations for each mechanical characteristic are developed considering the replacement volume of bottom ash fine/coarse aggregates. The mean values of the ratios of the measured to predicted values obtained using the proposed equation range from 1.00 to 1.05, with a standard deviation ranging from 0.002 to 0.013, indicating a reasonably positive agreement.

목차

Abstract
1 Introduction
2 Development of Equation
3 Conclusions
References

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