摘要
采用单掺硅灰石的方法,制备出纤维增强粉煤灰基地质聚合物。利用万能试验机、喷砂试验机、硫酸盐侵蚀等方法,探究不同掺量硅灰石对粉煤灰基地质聚合物的力学性能、抗冲蚀磨损性能和抗硫酸盐侵蚀性能的影响。结果表明,当硅灰石掺量为2.0%(质量分数)时,粉煤灰基地质聚合物性能最优,相较于未掺硅灰石的试样,其抗压强度、抗折强度分别提高了49.7%和10.3%,冲蚀率降低54.3%。与标准养护相比,硫酸盐侵蚀会严重影响强度发展,且硅灰石掺量越高,其抗压强度越低。
Through the single addition of wollastonite,a kind of fiber reinforced fly ash base geopolymer is prepared,and universal testing machine,sandblasting testing machine,sulfate erosion method are conducted so as to investigate the influence of wollastonite on fly ash base geopolymer.It is turned out that the wollastonite content of 2.0 wt%provides the fly ash base geopolymer with the best performance.Contrasted with geopolymer samples without wollastonite,the compressive strength and flexural strength are increased by 49.7%and 10.3%,respectively,and the erosion rate is reduced by 54.3%.Nevertheless,sulfate erosion would severely hinder the development of compressive strength in contrast with those under standard curing,and the compressive strength reduces relevantly with the increase of wollastonite.
作者
邬昊
王彦平
陈昶旭
沈霁
WU Hao;WANG Yanping;CHEN Changxu;SHEN Ji(School of Material Science and Engineering, Lanzhou Jiaotong University, Lanzhou 730070,China;School of Civil Engineering, Lanzhou Petrochemical University of Vocational Technology,Lanzhou 730300,China)
出处
《功能材料》
CAS
CSCD
北大核心
2021年第12期12110-12115,共6页
Journal of Functional Materials
基金
甘肃省高等学校创新基金资助项目(2021A-296)。
关键词
硅灰石
地质聚合物
力学性能
冲蚀磨损
硫酸盐侵蚀
wollastonite
geopolymer
mechanical properties
erosion and abrasion
sulphate attack
作者简介
邬昊(1998—),男,重庆云阳人,在读硕士,师承王彦平教授,主要从事混凝土冲蚀磨损防护材料研究;通讯作者:王彦平,E-mail:wangyp@mail.lzjtu.cn。
