天然火山灰质材料辅助胶凝材料性能研究  

Research on the performance of natural pozzolanic materials as a supplementary cementitious materials

作　　者：李立 夏京亮 关青锋 周永祥 王晶 冷发光 LI Li;XIA Jingliang;GUAN Qingfeng;ZHOU Yongxiang;WANG Jing;LENG Faguang(Luzhou Vocational&Technical College,Luzhou 646000,Chin;China Academy of Building Research,Beijing 100013,China;Building Materials of CABR Co.,Ltd.,Beijing 100018,China)

机构地区：[1]泸州职业技术学院,四川泸州646000 [2]中国建筑科学研究院有限公司,北京100013 [3]建研建材有限公司,北京100018

出　　处：《混凝土》2021年第7期82-85,89,共5页Concrete

基　　金：国家重点研发计划项目(2016YFC0701000)。

摘　　要：研究了天然火山灰质材料的化学成分及活性影响因素、基本性能(安定性和浸出物毒性等),结果表明:在化学组成与基本性能方面,天然火山灰质材料具有作为辅助胶凝材料的基本条件,凝灰岩较为易磨,但是在MB值、流动度比、活性等方面火山渣更具有性能优势,应用前景广阔;两种天然火山灰质材料安定性合格,浸出物毒性和放射性均比对比粉煤灰低,并且满足相关标准要求,具有一定抑制碱骨料活性作用;增大火山渣比表面积可提高其活性。The chemical composition,basic properties(stability,toxicity and activity of natural pozzolanic materials)are studied.The results show that in terms of chemical composition and basic properties,natural pozzolanic materials have the basic conditions to be used as auxiliary cementitious materials,and the tuff is relatively easy to grind,but the pozzolanic slag has more performance advantages in MB value,mobility ratio and activity The two kinds of natural pozzolanic materials have good stability,the toxicity and radioactivity of leachable are lower than that of fly ash,and they meet the requirements of relevant standards,and they have a certain inhibition effect on the activity of alkali aggregate.The activity of pozzolanic slag increases with the increase of specific surface area.

关 键 词：天然火山灰质材料 活性 安定性 浸出物毒性 放射性 

分 类 号：TU528.041[建筑科学—建筑技术科学]