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http://dx.doi.org/10.5659/JAIK.2022.38.5.251

Evaluation on Compressive Strength and Toughness Index of Lightweight Aggregate Concrete with Expanded Waste-glass Particles and Micro Steel Fibers  

Lee, Hye-Jin (Dept. of Architectural Engineering, Kyonggi University)
Kim, Hak-Young (Dept. of Architectural Engineering, Kyonggi University)
Yang, Keun-Hyeok (Dept. of Architectural Engineering, Kyonggi University)
Lee, Jae-Yun (Dept. of Architectural Engineering, Kyonggi University)
Publication Information
Journal of the Architectural Institute of Korea / v.38, no.5, 2022 , pp. 251-258 More about this Journal
Abstract
The objective of this study is to examine the applicability of expanded waste-glass particles as an alternative for lightweight fine aggregates to produce lightweight aggregate concrete (LWAC) with a higher strength/weight ratio. The effectiveness of micro steel fibers was also investigated in alleviating the increased brittleness of LWAC due to the addition of the waste-glass particles. The main test parameters were the replacement ratio of the waste-glass particles for lightweight fine aggregates and the type (hooked-end and straight shapes) of micro steel fibers. Test results showed that LWAC containing the expanded waste-glass particles displays higher compressive strength than the conventional LWAC at the same unit weight, whereas compressive toughness index (Ic) of LWAC tends to decrease with the increase in the waste-glass particle content. At the same level of fiber reinforcing index, waste-glass LWAC reinforced with micro steel fibers exhibited higher Ic values than LWAC with the conventional macro steel fibers. Overall, the hybrid use of micro steel fibers with hooked-end and straight shapes could be considered positively in improving the toughness of LWAC containing the expanded waste-glass particles.
Keywords
Expanded waste-glass particles; Micro steel fiber; Compressive toughness index; Strength/weight ratio;
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Times Cited By KSCI : 1  (Citation Analysis)
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