Hydration kinetics analysis of cementitious paste composites produced by binary and ternary binder materials for potential use in massive concrete structures

Sheng, Xia; Xiao, Shimiao; Zheng, Weiqi; Yang, Ying‐Wei; Ma, Kun

doi:10.1016/j.cscm.2023.e02209

Cited by 1 publication

(1 citation statement)

References 28 publications

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“…During the construction of large-volume marine concrete [21][22][23][24], there is a significant risk of leakage in the cooling water pipes. Once leakage occurs, it becomes a pathway for chloride ion intrusion, which adversely affects the durability of the concrete structure.…”

Section: Research and Applications Of Large-volume Marine Concretementioning

confidence: 99%

The Application of Heat-Shrinkable Fibers and Internal Curing Aggregates in the Field of Crack Resistance of High-Strength Marine Structural Mass Concrete: A Review and Prospects

Li,

Yu,

et al. 2023

Polymers

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High-strength large-volume marine concrete is a critical material required for the construction of large-span sea-crossing bridges. However, the widespread issue of cracking in this concrete type significantly impacts the durability and load-bearing capacity of concrete structures. Dealing with these cracks not only delays construction schedules but also increases project costs. Addressing these pressing technical issues, this project proposes the use of newly developed high-modulus heat-shrinkable fibers (polyethylene terephthalate fiber, also known as PET fiber) from the textile industry. These fibers utilize the heat generated during the hydration of large-volume concrete to trigger its contraction, applying three-dimensional micro-prestressing stress to enhance its crack resistance, while simultaneously incorporating prewetted aggregates with high-performance micro-porous structures and utilizing their internal curing effect to reduce concrete shrinkage. This helps to minimize the loss of micro-prestressing stress caused by concrete shrinkage and creep. This synergistic approach aims to improve the crack resistance of high-strength large-volume marine concrete. By employing modern testing and simulation analysis techniques, this study aims to uncover the mechanism by which the heat-shrinkable fibers exert micro-prestressing stress on concrete and the water release mechanism of internal curing aggregates during the temperature rise and fall stages of large-volume concrete. It seeks to elucidate the cooperative regulation of the microstructure and performance enhancement mechanisms of high-strength large-volume marine concrete by the heat-shrinkable fibers and internal curing aggregates. This research will lead to the development of novel methods for the design and crack control of high-strength large-volume marine concrete, which will be validated through engineering demonstrations. The outcomes of this study will provide theoretical foundations and technical support for the preparation of the crack-resistant large-volume marine concrete used in large-span bridges.

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Section: Research and Applications Of Large-volume Marine Concretementioning

confidence: 99%

The Application of Heat-Shrinkable Fibers and Internal Curing Aggregates in the Field of Crack Resistance of High-Strength Marine Structural Mass Concrete: A Review and Prospects

Li,

Yu,

et al. 2023

Polymers

View full text Add to dashboard Cite

show abstract

Hydration kinetics analysis of cementitious paste composites produced by binary and ternary binder materials for potential use in massive concrete structures

Cited by 1 publication

References 28 publications

The Application of Heat-Shrinkable Fibers and Internal Curing Aggregates in the Field of Crack Resistance of High-Strength Marine Structural Mass Concrete: A Review and Prospects

The Application of Heat-Shrinkable Fibers and Internal Curing Aggregates in the Field of Crack Resistance of High-Strength Marine Structural Mass Concrete: A Review and Prospects

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