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Pyo, Sukhoon
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Fresh and hardened properties of portland cement-slag concrete activated using the by-product of the liquid crystal display manufacturing process

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Title
Fresh and hardened properties of portland cement-slag concrete activated using the by-product of the liquid crystal display manufacturing process
Author
Choi, SungPyo, Sukhoon
Issue Date
2020-09
Publisher
MDPI AG
Citation
MATERIALS, v.13, no.19, pp.1 - 15
Abstract
This experimental research investigated the applicability of the liquid crystal display (LCD) by-product of the refining process as a sustainable and alternative alkali activator for ground granulated blast-furnace slag (GGBFS) blended cement concrete. Three levels of binder replacement using the industrial by-product, and four water/binder ratios were considered in order to evaluate the effects of the replacement in fresh and hardened properties of the blended concrete. XRD and TG analyses confirmed that the by-product that contains abundant alkali compounds promotes the reactivity of GGBFS. The test results indicated that the incorporation of the by-product results in delayed setting and degraded workability due to the highly porous nature of the by-product, yet shows rapid early-age strength development of the blended concrete as conventional alkaline activators for GGBFS. These characteristics shed light on a simple yet effective and practical means of reusing the industrial by-product as an alternative alkaline activator. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.
URI
https://scholarworks.unist.ac.kr/handle/201301/48777
URL
https://www.mdpi.com/1996-1944/13/19/4354
DOI
10.3390/ma13194354
ISSN
1996-1944
Appears in Collections:
UEE_Journal Papers
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