碱硅酸反应影响下混凝土结构的寿命预测

Prediction of Service Life of Concrete Structures Affected by Alkali-Silica Reaction

选取具有碱活性的实际工程砂石,以混凝土棱柱体法为基础,结合Arrhenius方程,建立了实际工程混凝土碱硅酸反应寿命预测数学模型。根据实际配合比混凝土在升温加速试验的膨胀发展,利用模型可预测实际混凝土工程在常温状态下的使用寿命。

The field alkali reactive aggregates were chosen for the present investigation. Based on the concrete prism method, a laboratory study has been carried out to establish the mathematic model for ASR while combining with the Arrhenius equation. Using this model, the service life of concrete structure under normal temperature may be predicted on the basis of expansion development of concrete, which mixed by field proportion and cured under elevated temperature.