Self-Curing Concrete under Sulfate Attack

Bashandy, Alaa A.

doi:10.1515/ace-2015-0061

Cited by 12 publications

(6 citation statements)

References 8 publications

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“…Many researchers have investigated self-curing concrete composition using different materials as curing agents, such as porous aggregate, for example lightweight aggregate (LWA) [38][39][40][41], porous superfine powders [42][43][44][45], artificial normal-weight aggregate [46][47][48], chemical curing agents, for example superabsorbent polymers [49][50][51][52][53] and polyethylene glycol [54][55][56], and natural fibers [33,57,58]. The following sub-sections explain the mechanism and properties of self-curing concrete using different curing agents.…”

Section: Self-curing Agent and Mechanism In Cementitious Materialsmentioning

confidence: 99%

A Review on the Use of Self-Curing Agents and Its Mechanism in High-Performance Cementitious Materials

et al. 2022

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Self-cured concrete is a type of cement-based material that has the unique ability to mitigate the loss rate of water and increase the capacity of concrete to retain water compared to conventional concrete. The technique allows a water-filled internal curing agent to be added to the concrete mixture and then slowly releases water during the hydration process. Many researchers have studied the composition of self-curing concrete using different materials such as artificial lightweight aggregate (LWA), porous superfine powders, superabsorbent polymers (SAP), polyethylene glycol (PEG), natural fibers, and artificial normal-weight aggregate (ANWA) as curing agents. Likewise, physical, mechanical, and microstructure properties, including the mechanisms of curing agents toward self-curing cement-based, were discussed. It was suggested that adopting self-curing agents in concrete has a beneficial effect on hydration, improving the mechanical properties, durability, cracking susceptibility behavior, and mitigating autogenous and drying shrinkage. The interfacial transition zone (ITZ) between the curing agent and the cement paste matrix also improved, and the permeability is reduced.

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Section: Self-curing Agent and Mechanism In Cementitious Materialsmentioning

confidence: 99%

A Review on the Use of Self-Curing Agents and Its Mechanism in High-Performance Cementitious Materials

et al. 2022

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“…The main idea of self-curing concrete is to cure the concrete from inside to outside while satisfying the characteristics of strength and durability [9]. In addition, Self-curing concrete behaves well in a fire and under sulfate and chloride attack [14,15,10]. There are two main curing regimes [16].…”

Section: Introductionmentioning

confidence: 99%

The Performance of Self-curing Concrete Cast using Seawater

Bashandy

Emam

2023

ERJ. Engineering Research Journal

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Construction engineering in coastal areas is facing the challenge of a shortage of fresh water for mixing and curing. The quality of water places an important role in the setting and strength development of concrete structures. This research aims to study the feasibility of using seawater to cast and curing plain concrete for non-structural uses. Samples were cast using tap water or seawater and then cured using tap water or seawater up to testing ages. Concrete properties were studied in terms of compressive, tensile, flexure, and bond strengths at 7, 28, and 56 days of age. Test results showed that the self-curing concrete with Polyethylene Glycol 400 performed better in its main mechanical properties compared to conventional concrete. The compressive strength and subsequently the other related strengths of concrete were shown to increase for specimens mixed and cured with seawater at early ages up to 7 days, while a definite decrease in the respective strengths was observed for ages more than 28 days and up to 56 days. The reduction in strength increases with an increase in exposure time, which may be due to salt crystallization formation affecting the strength gain.

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“…Selfcuring (SC) concrete is a type of concrete, which did not need conventional curing after molding concrete that is based on the technique [14]. It behaves well under elevated temperatures with acceptable durability [4,15]. The compressive strength will be enhanced by the reduced shrinkage rising from water evaporation, making it ideal for concrete placing without any external curing [16,17].…”

Section: Introductionmentioning

confidence: 99%