Research on the Improvement Mechanism of Additives on the Durability Performance of Cement Concrete
The paper mainly studies the improvement mechanism of additives on the durability of cement concrete.It reveals key factors to improve the durability of cement concrete by analyzing its composition and structural characteristics,as well as the effects of mineral admixtures,retarding agents and expanding agents on its properties.It discusses the effects and mechanisms of mineral admixtures,retarders and expanding agents on the durability of cement concrete,respectively:mineral admixtures affect its fluidity,mechanical properties,anti-permeability,anti-frost properties and shrinkage properties,retarders affect its fluidity,strength,dry shrinkage properties and anti-permeability,and expanding agents affect its mechanical properties,anti-permeability,anti-carbonation properties,sulphate erosion resistance properties and freezing-thawing cycle resistance properties.
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