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ByEarly-strength compounding adding different early strength materials to the mortar and concreteConcrete, the low-temperature early strength performance changes were compared and tested under two curing conditions: low temperature and room temperature. Through experiments, it was found that with the increase of early strength material content, the low-temperature early strength performance of mortar and concreteConcrete is significantly improved. When the dosage is 0.50%, the comprehensive cost-effectiveness of the sand dispersion performance and the 1 d low-temperature and room temperature compressive strength of the sand is the highest. The order of the improvement effect on the 1 d low-temperature compressive strength of concreteConcrete is: C2H2O4Ca > NaNO2 > Ca(NO₃)₂ > nano C–S–H, and the improvement effect of nano SiO2 is not significant. The room temperature conditions are: C2H2O4Ca > NaNO2 > nano C–S–H > Ca(NO₃)₂ > nano SiO2. The comprehensive comparison of the early strength performance of cement sand and concreteConcrete shows that the combination of C2H2O4Ca has the best comprehensive improvement effect on early strength at 1 d low temperature and room temperature low temperature.

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Effect of Different Early-Strength Compounding Technology on the Performance of Low Temperature and Early Strength of Concrete

  • 会议论文

  • 发表日期：

    2026年

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  • Shaohong Zhu

摘要

ByEarly-strength compounding adding different early strength materials to the mortar and concreteConcrete, the low-temperature early strength performance changes were compared and tested under two curing conditions: low temperature and room temperature. Through experiments, it was found that with the increase of early strength material content, the low-temperature early strength performance of mortar and concreteConcrete is significantly improved. When the dosage is 0.50%, the comprehensive cost-effectiveness of the sand dispersion performance and the 1 d low-temperature and room temperature compressive strength of the sand is the highest. The order of the improvement effect on the 1 d low-temperature compressive strength of concreteConcrete is: C2H2O4Ca > NaNO2 > Ca(NO₃)₂ > nano C–S–H, and the improvement effect of nano SiO2 is not significant. The room temperature conditions are: C2H2O4Ca > NaNO2 > nano C–S–H > Ca(NO₃)₂ > nano SiO2. The comprehensive comparison of the early strength performance of cement sand and concreteConcrete shows that the combination of C2H2O4Ca has the best comprehensive improvement effect on early strength at 1 d low temperature and room temperature low temperature.