不同激发剂对陶瓷微粉水泥胶砂强度的影响  

Effect of Different Activators on the Strength of Cement Mortar Containing Ceramic Micropowder

作　　者：王倩 李华伟 刘飞宇 Wang Qian;Li Huawei;Liu Feiyu(School of Civil Engineering and Architecture,Wuyi University,Wuyishan,Fujian 354300;Fujian University Engineering Research Center for the Prevention and Control of Geological Hazards in Northern Fujian,Fujian,Wuyishan 354300)

机构地区：[1]武夷学院土木工程与建筑学院,福建武夷山354300 [2]闽北山地地质灾害防治福建省高校工程研究中心,福建武夷山354300

出　　处：《非金属矿》2023年第1期47-50,54,共5页Non-Metallic Mines

基　　金：福建省自然科学基金(2020J01400);福建省中青年教师教育科研项目(JAT200669);大学生创新创业训练项目(S202210397067)。

摘　　要：为了研究陶瓷微粉作为辅助胶凝材料的可行性,以30%陶瓷微粉作为辅助胶凝材料替代水泥,选用4种不同激发剂提升陶瓷微粉的活性,并利用X射线荧光光谱(XRF)、X射线衍射(XRD)、扫描电镜(SEM)等对原料及胶结体的化学组成、矿物组成及微观形貌等进行表征和分析。结果表明,4%Na_(2)SO_(4)对陶瓷微粉水泥砂浆体系的早期活性提升效果最好,其3 d强度较不添加激发剂的基准组提高61.1%,但会引起结构内部损伤,影响后期强度;而8%电石渣作为激发剂能够促进陶瓷微粉水泥砂浆水化硅酸钙(C-S-H)、水化硅铝酸钙(C-A-S-H)凝胶的形成,对后期力学性能激发效果最好,28 d强度较基准组提升27%,活性指数为0.99,且能兼顾早期强度。In order to study the feasibility of ceramic micropowder as auxiliary cementitious material,30%ceramic micropowder was used as auxiliary cementitious material to replace cement,four different activators were selected to enhance the activity of ceramic micropowder cement mortar.The chemical composition,mineral composition and microstructure of raw materials and cements were characterized and analyzed by XRF,XRD,SEM and other methods.The results show that 4%Na_(2)SO_(4) has the best effect on improving the early activity of the ceramic micropowder cement mortar system,and its strength after 3 days increases by 61.1%compared with the cement mortar without activator,but it will cause internal damage of the structure and affect the later strength;and 8%carbide slag as an activator can promote the formation of C-S-H and C-A-S-H gels of ceramic micropowder cement mortar,and has the best excitation effect on the later mechanical properties,the strength after 28 days increases by 27%compared with the cement mortar without activator,the activity index is 0.99,and the early strength can be taken into account.

关 键 词：陶瓷微粉 激发剂 强度 活性指数 微观结构 

分 类 号：TU528[建筑科学—建筑技术科学]