公路工程高性能混凝土碱-骨料反应试验研究  

Experimental study of alkali-aggregate reaction about high-performance concrete used in highway engineering

作　　者：付向红[1] 

机构地区：[1]安阳工学院土木与建筑工程学院,河南安阳455000

出　　处：《混凝土》2012年第3期35-37,共3页Concrete

基　　金：河南省科技计划重点攻关项目(102102310311)

摘　　要：碱-骨料反应是影响混凝土耐久性的主要因素之一。正确判定骨料的碱活性是防治碱骨料反应的重要步骤。对安阳地区配制高性能混凝土所采用的粗细骨料进行了岩相法测试,得出含有碱硅活性成分。采用快速砂浆棒法,得出砂浆棒的膨胀率大于规定值,判定其为碱硅活性集料。对该地区选择粗细骨料提供参考依据,也为进一步采取抑制碱-集料反应措施提供依据。Alkali-aggregate reaction is one important factor of influencing concrete durability.It is a important procedure to judge alkali-reactive of aggregate_kggregate materials used in high performance concrete in anyang region are detected by petrography and the result is that it contains al- kali-silicon reactive compositions.Expansibility of mortar-bar is greater than specified value when it is tested through rapid mortar-bar method.The conclusion has reference value to select aggregate materials and provide basis for taking measures to restrain alkali-aggregate reaction further.

关 键 词：碱-骨料反应 岩相法 快速砂浆棒法 碱活性集料 

分 类 号：TU528.01[建筑科学—建筑技术科学]