Recent Advances on the Application of Layered Double Hydroxides in Concrete-A Review
authors Mir, ZM; Bastos, A; Hoche, D; Zheludkevich, ML
nationality International
journal MATERIALS
author keywords layered double hydroxides; reinforcement; ion exchange; corrosion; concrete
keywords CALCIUM SULFOALUMINATE CEMENT; HYDROTALCITE-LIKE COMPOUNDS; CHLORIDE-INDUCED DEPASSIVATION; REINFORCED-CONCRETE; CORROSION PROTECTION; AQUEOUS-SOLUTION; PHYSICOCHEMICAL PROPERTIES; CARBONATION RESISTANCE; EXCHANGE PROPERTIES; HYDRATION PRODUCTS
abstract The issue of chloride induced corrosion of reinforced concrete is a serious problem affecting infrastructure globally and causing huge economic losses. As such this issue has gained a considerable attention in the scientific community in the recent past. Layered Double Hydroxides (LDHs) have recently emerged as a new class of concrete-additives with a potential to increase the chloride resistance of concrete and mitigate corrosion. LDHs are clay like structures consisting of positively charged layers of cations with associated hydroxides and exchangeable anions in between the layers. Due to this charge balanced structure, LDHs possess the property of encapsulating an anion from the environment and replacing it with an exchangeable anion present in its layers. Potential applications include chloride entrapment in concrete and delivery of corrosion inhibiting anions. However, many versatile compositions of LDHs can be easily synthesized and their application as cement additives reach far beyond corrosion mitigation in concrete. This review presents a summary of recent advances on the applications of LDH in concrete. An extensive set of recently published literature has been critically reviewed and trends have been identified.
publisher MDPI
year published 2020
volume 13
issue 6
digital object identifier (doi) 10.3390/ma13061426
web of science category Materials Science, Multidisciplinary
subject category Materials Science
unique article identifier WOS:000529208000165
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journal analysis (jcr 2019):
journal impact factor 3.057
5 year journal impact factor 3.424
category normalized journal impact factor percentile 58.121
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