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混凝土中凝胶产物的稳定性直接影响到混凝土构件的安全耐久性。本文以研究粉煤灰混凝土中水合硅酸钙、水合铝酸钙的稳定条件为目的，通过对水合凝胶产物水解反应的标准自由焓变的计算，讨论了在自然环境水的侵蚀下，粉煤灰混凝土中某些凝胶产物稳定存在的热力学条件。
The stability of gel products in concrete directly affects the safety and durability of concrete components. Based on the calculation of the standard free enthalpy change of hydrolysis reaction of hydrated gel products, this paper discusses the stability of hydrated calcium silicate and hydrated calcium aluminate in fly ash concrete. Under the erosion of natural water, Thermodynamic conditions for the stable existence of some gel products in fly ash concrete.