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Title |
Evaluation of Mechanical Properties of Concrete Using Artificial Lightweight Sewage Sludge Aggregate
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Authors |
문주현(Ju-Hyun Mun) ; 양근혁(Keun-Hyeok Yang) ; 김종원(Jong-Won Kim) ; 심지혜(Ji-Hye Sim) |
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DOI |
https://doi.org/10.4334/JKCI.2023.35.2.137 |
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Keywords |
하수 슬러지; 인공경량골재; 역학적 특성; 설계기준 sewage sludge; artificial lightweight aggregate; mechanical properties; design provisions |
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Abstract |
The objective of this study was to examine the mechanical properties of concrete produced using artificial lightweight sewage sludge aggregate (LWAC_SW) with respect to the design equations of safety code provisions. The main parameters investigated were the replacement ratio of natural sand with fine lightweight aggregates, water-to-cement ratio, and curing temperature. Test results showed that the tensile resistance capacity of LWAC_SW was commonly lower than that of concrete using artificial lightweight clay and fly ash aggregate (LWAC_CF) but higher than the predictions obtained from the design equations of KCI 2021 and fib model code 2010. From regression analysis using the current test data, empirical equations were formulated to reliably assess the compressive strength development, moduli of elasticity and rupture, and splitting tensile strengths of LWAC_SW.
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