珊溪水库混凝土碱-骨料反应试验  

Study on Alkali-Aggregate Reaction Experiment of Concrete in Shanxi Reservoir

作　　者：王黎[1] 李鹏翔[1] 

机构地区：[1]长江水利委员会长江科学院,湖北武汉430010

出　　处：《人民黄河》2012年第12期127-129,共3页Yellow River

摘　　要：碱-骨料反应对混凝土的耐久性危害很大,混凝土的耐久性对大坝的安全十分重要。珊溪水库工程属于大(1)型工程,对该工程混凝土骨料采用岩相法、化学法、小棒快速法、砂浆棒快速法进行碱活性研究。结果表明:该工程混凝土骨料中含有活性骨料,通过控制混凝土总碱量、掺入不少于15%的粉煤灰等措施抑制碱-骨料反应可确保工程安全。AAR is deleterious to durability of concrete. The durability of concrete is very important to the safety of dam. Shanxi Reservoir is one of the larger reservoirs in Zhejiang Province. The aggregates were determined on alkali reactivity potential by petrography method, accelerated mortar bar method, mortar bar method and inhibiting test. The results show that the aggregates include alkali reactivity aggregates. In order to insure safety of dam,the alkali content of cement must be controlled strictly, or the addition of fly ash is at least 15%.

关 键 词：混凝土 碱-骨料反应 耐久性 珊溪水库 

分 类 号：TV431[水利工程—水工结构工程]