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Investigating the effect of hybrid curing on mechanical and durability properties of normal-strength concrete
Highlights The application of internal curing in normal-strength concrete is still limited. Admixtures can improve the potential of internal curing in normal-strength concrete. Highly durable concrete can be produced using the hybrid curing method. Normal-strength concrete with no need for external curing was developed.
Abstract Internal curing is commonly implemented in concrete mixes with water-to-cement (w/c) ratios lower than 0.4 because of self-desiccation. Normal Strength Concrete (NSC) with w/c ratios higher than 0.5 would benefit from internal curing because of labor and resource-saving and quality control issues. However, the loss of curing water due to evaporation reduces internal curing efficiency in high w/c ratio mixes. This research evaluates a novel approach to minimizing internal curing water loss at an early age by combining internal curing with permeability-reducing admixtures (PRA) and shrinkage-reducing admixtures (SRA). Different mixtures containing binary and ternary combinations of admixtures and internal curing agents were investigated. According to the findings, admixtures such as SRA and PRA can play a vital role in maximizing the potential of internal curing in high w/c mixes. Furthermore, the ternary combination of LWA and the two admixtures has proven promising based on the observed overall improvement in NSC properties.
Investigating the effect of hybrid curing on mechanical and durability properties of normal-strength concrete
Highlights The application of internal curing in normal-strength concrete is still limited. Admixtures can improve the potential of internal curing in normal-strength concrete. Highly durable concrete can be produced using the hybrid curing method. Normal-strength concrete with no need for external curing was developed.
Abstract Internal curing is commonly implemented in concrete mixes with water-to-cement (w/c) ratios lower than 0.4 because of self-desiccation. Normal Strength Concrete (NSC) with w/c ratios higher than 0.5 would benefit from internal curing because of labor and resource-saving and quality control issues. However, the loss of curing water due to evaporation reduces internal curing efficiency in high w/c ratio mixes. This research evaluates a novel approach to minimizing internal curing water loss at an early age by combining internal curing with permeability-reducing admixtures (PRA) and shrinkage-reducing admixtures (SRA). Different mixtures containing binary and ternary combinations of admixtures and internal curing agents were investigated. According to the findings, admixtures such as SRA and PRA can play a vital role in maximizing the potential of internal curing in high w/c mixes. Furthermore, the ternary combination of LWA and the two admixtures has proven promising based on the observed overall improvement in NSC properties.
Investigating the effect of hybrid curing on mechanical and durability properties of normal-strength concrete
Gereziher Atsbha, Tesfaalem (author) / Zhutovsky, Semion (author)
2023-01-25
Article (Journal)
Electronic Resource
English
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