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Calcium hydroxide (Ca(OH) 2), also known as hydrated lime, is a byproduct of the hydration of Portland cement and plays a critical role in the chemistry of cement. It is formed during the hydration of calcium silicates, primarily C 3S and C 2S, which are major components of Portland cement. Ca(OH) 2 contributes to the overall alkalinity of the cement paste, which is crucial for the continuation of hydration and for providing a protective environment against corrosive agents. Its high pH environment is essential for the passivation of reinforcing steel, preventing corrosion.

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Ca(OH) 2

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  • 发表日期：

    2025年

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摘要

Calcium hydroxide (Ca(OH) 2), also known as hydrated lime, is a byproduct of the hydration of Portland cement and plays a critical role in the chemistry of cement. It is formed during the hydration of calcium silicates, primarily C 3S and C 2S, which are major components of Portland cement. Ca(OH) 2 contributes to the overall alkalinity of the cement paste, which is crucial for the continuation of hydration and for providing a protective environment against corrosive agents. Its high pH environment is essential for the passivation of reinforcing steel, preventing corrosion.