- 劉晨霞,陳改新,紀國晉,王秀軍,計 濤
2012年第3期
摘要
引用本文
摘 要:參照砂漿棒快速法,調整試驗溫度,研究了溫度對骨料堿-硅酸反應(ASR)膨脹的影響規律。采用化學反應速率常數描述溫度對混凝土ASR膨脹的影響,探討了ASR速率常數與養護溫度之間的關系,驗證了溫度對堿-骨料反應的影響可以用Arrhenius方程來描述的設想。運用Arrhenius方程初步建立了ASR膨脹預測模型。
Abstract: Based on accelerating mortar-bar method, the effect of temperature on alkali-silica reaction (ASR) is studied through a series of testing programs. Chemical reaction rate constant is used to describe the effect of temperature on ASR, and the relationship between ASR rate constant and curing temperature is discussed, which further verifies the supposition that the effect of temperature on ASR could be described by Arrhenius equation. Thus ASR expansion prediction model is established through Arrhenius equation.