保水性を有する新収縮低減剤を混和したコンクリートに関する実験的研究

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  • EXPERIMENTAL STUDY ON CONCRETE CONTAINING A NEW WATER-HOLDING, SHRINKAGE-REDUCING AGENT

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Concerns about cracking in concrete structures have grown in recent years. The cracking can be controlled very effectively by using a shrinkage-reducing agent to reduce the drying shrinkage of concrete. However, conventional shrinkage-reducing agents have some issues, such as difficulty in adjusting the concrete's air content and a significant decrease in freezing and thawing resistance. We conducted a feasibility study on a new shrinkage-reducing agent that reduces the shrinkage by retaining moisture in the concrete. This new shrinkage-reducing agent simultaneously reduces shrinkage and improves freezing and thawing resistance. Compared to conventional shrinkage-reducing agents, this new shrinkage-reducing agent provides superior concrete workability.

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