碱活性骨料在阿尔塔什混凝土工程中的应用研究  

Application Research of Alkali-Active Aggregate in Altash Concrete Project

作　　者：罗小涛 LUO Xiaotao(Sinohydro Bureau 5 Co.,Ltd.,Chengdu 610066,China)

机构地区：[1]中国水利水电第五工程局有限公司,四川成都610066

出　　处：《中国水能及电气化》2023年第6期48-51,共4页China Water Power & Electrification

摘　　要：碱骨料反应是混凝土病害之一,其对混凝土的破坏极大,一旦造成混凝土的膨胀开裂,会加剧混凝土结构物的其他破坏,在寒冷地区的破坏更为严重。文章通过阿尔塔什混凝土工程中碱-骨料反应抑制措施的研究,建立了粉煤灰抑制碱-骨料反应和低水胶比低水泥用量控制混凝土总碱含量的双控模式,在现有材料的基础上,可以有效抑制碱-骨料反应带来的危害,以此提高混凝土耐久性能,节约工程成本。Alkali-aggregate reaction is one of the concrete diseases,which causes great damage to concrete.Once concrete is affected and expands,it will exacerbate other damages to concrete structures,especially in cold regions.Through the study of measures to suppress alkali-aggregate reaction in Altash concrete project,this paper establishes a dual-control mode of fly ash to suppress alkali-aggregate reaction and control the total alkali content of concrete with low water-cement ratio and low cement consumption.Based on existing materials,this method can effectively suppress the hazards caused by alkali-aggregate reaction,improve the durability of concrete and save project costs.

关 键 词：碱活性 抑制 粉煤灰 碱含量 耐久性 

分 类 号：TV422[水利工程—水工结构工程]