基于板岩的混凝土骨料碱活性反应试验研究  

Experimental Study On the Reaction of Concrete Aggregate Alkali Activity Based on Slate

作　　者：尚羽[1] 陈芳平[1] Shang Yu;Chen Fangping

机构地区：[1]贵州省交通规划勘察设计研究院股份有限公司,贵州贵阳550081

出　　处：《江苏建材》2024年第2期44-46,65,共4页Jiangsu Building Materials

摘　　要：通过不同的碱硅酸反应试验方法,对贵州省东南片区大面积分部的板岩、变余砂岩等浅变质岩进行试验研究,分析其物理力学指标、碱硅酸反应的主要矿物成分含量等,通过转靶多晶体X射线衍射方法进行岩样矿物组成分析,采用不同的水泥集料配合比砂浆试验分析不同配合比砂浆膨胀率,为混凝土水泥及集料选择提供相关试验参考。In this paper,through different alkali silicic acid reaction test methods,the shallow metamorphic rocks such as slate and metamorphic sandstone in the large area of Qiandongnan area of Guizhou Province were tested and studied,and the physical and mechanics indicators,the main mineral component content of the alkali silicic acid reaction were analyzed,the rock mineral composition analysis was carried out by the trans-target polycrystalline X-ray diffraction method,and the different cement aggregate mix ratio mortar expansion rates were analyzed by different cement aggregates and mortar ratios,which provided relevant test references for concrete cement and aggregate selection.

关 键 词：变质岩 碱骨料 碱活性反应 混凝土抑制剂 

分 类 号：P588.343[天文地球—岩石学]