Electrochemical Assessment of Zinc-based Anti-corrosive Solutions for Reinforced Concrete Structures and Strategies for a Reliable Monitoring Plan

Jayaraman, Arul; Vasudevan, Mangottiri; Natarajan, Nagarajan

doi:10.1007/s40996-023-01189-5

Cited by 1 publication

(2 citation statements)

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“…It was observed that partial replacement of cement with nano-sized metal oxides has resulted in better control to surface corrosion and rebar corrosion [42][43][44]. The durability results are found to be more effective when binary composite coatings are applied based on the electrochemically rewarding metallic compounds [45][46][47]. There also exist potential challenges from dissolved ions as indicated by the ion penetration and diffusive mass transfer [48][49][50].…”

Section: Introductionmentioning

confidence: 99%

“…It was determined through quantitative analysis of the control samples, single combination mixture (MS-1, MK-1 and CDW-1), binary combination mixture (B-1, C-1 & D-1) and ternary combination mixture (Tthat the peaks of the induced crystallisation characteristics correspond to vaterite (V), aragonite (A) and calcite. The sample demonstrates that, for 2θ values of about21,22,23,26,27,28,29,32,35,36,39,40,45,47,50, 55, 60, and 67, the induced crystallisation features correspond to vaterite (V), aragonite (A), calcite (C), and di-calcium silicate (β-C2S, α-C2S, α1-C2S, and γ-C2S) of calcium carbonate.…”

mentioning

confidence: 99%

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A Compensatory Approach for Enhancing the Strength and Durability of Green Concrete Composites (GCC) with Multiple Combinations of Recyclable Pozzolanic Materials (RPM)

ARIYAGOUNDER,

MANGOTTIRI

2023

Preprint

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Recyclable Pozzolanic materials (RPM) derived from wastes are increasingly used in mortar and concrete for a number of purposes, chief among them being the reduction of cement quantity, which lowers construction costs as well as carbon footprint. Among these, the most often used mixture ingredients in concrete are fly ash (FA), rice husk ash (RHA), palm oil fuel ash (POFA), granulated slag (GS), silica fume (SF), construction debris waste powder (CDW), and calcined clay (CC). Recent studies reveal that they are reasonable to impart mechanical strength when applied individually; however, their combined effects are not extensively investigated due to the characteristic conflicts existing in their elemental composition and the resulting pozzolanic activities. We present a comprehensive evaluation of durability and strength properties of different combinations of binary and ternary replacements of specific pozzolanic components in varying amounts (5%, 10%, 15%, and 20%). These combinations were so chosen as to provide a compensatory effect on the apparent binding properties based on the difference in their geometry and composition. The results indicate that 5% of the ternary combination had good corrosion resistance and durability, whereas 10% of the single mode, 5% of the binary mode, and 5% of the ternary mode have high mechanical properties, durability, and resistance to corrosion. These insightful findings show that use of optimized mixtures of composite pozzolanic materials can improve the mechanical properties of concrete mixes by compensating each other for their intrinsic limitations, thereby ensuring higher sustainability towards green concrete applications.

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