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具有碱-骨料反应(AAR)的混凝土构筑物遭受破坏的原因往往是AAR与其它多种耐久性破坏因素共同作用、相互促进从而加剧破坏所造成的。采用无损检测及劈拉、抗压强度测试等手段研究碱-骨料反应中碱-硅酸反应(ASR)与冻融循环共同作用致使混凝土劣化的协同效应问题。研究结果表明ASR与冻融循环的协同破坏效应为超叠加破坏效应。
The destruction of concrete structures with alkali-aggregate reaction (AAR) is often caused by the combination of AAR and various other durability failure factors that contribute to each other and exacerbate the damage. Non-destructive testing, tensile strength, and compressive strength tests were used to study the synergistic effect of alkali-silicic acid reaction (ASR) and freeze-thaw cycles in the alkali-aggregate reaction resulting in deterioration of the concrete. The results show that the synergistic destructive effect of ASR and freeze-thaw cycle is a super-superposed damage effect.