硅酸盐通报2024，Vol.43Issue(7)：2346-2354,9.
定向钢纤维水泥基复合材料的含砂率及定向时程影响规律
Sand Content and Orientation Time Influence Law of Oriented Steel Fiber Cementitious Composites
摘要
Abstract
In order to study the steel fiber orientation distribution law of steel fiber cementitious composites,considering the two factors of orientation time and sand content,32 specimens were made based on the steel fiber orientation equipment independently developed in the team.Under the constant magnetic field,the gradient orientation time and sand content steel fiber orientation tests were carried out systematically,using COMSOL finite element to simulate the magnetic field distribution of orientation tests,and using CT-X-ray scanning technology to obtain the cross-section images of different specimens.The orientation coefficient of steel fiber was calculated,and the orientation law of steel fiber under the influence of gradient orientation time and sand content were discussed.The results show that with the increase of orientation time,the orientation coefficient of steel fiber under the condition of the same sand content increases rapidly at the initial stage,and then slows down gradually and finally tends to be stable.Under the same orientation time,too high or too low sand content will adversely affect the orientation efficiency of steel fiber,and controlling the sand content at about 40％can obtain relatively ideal steel fiber orientation effect.关键词
水泥基复合材料/磁场定向/含砂率/定向时程/方向系数Key words
cementitious composite/magnetic orientation/sand content/orientation time/orientation coefficient分类
建筑与水利引用本文复制引用
陈卓异,寇子豪,熊永明,易宏健,曹先慧..定向钢纤维水泥基复合材料的含砂率及定向时程影响规律[J].硅酸盐通报,2024,43(7):2346-2354,9.基金项目
国家自然科学基金(51708047,51778069) （51708047,51778069）
长沙市自然科学基金(kq2202207) （kq2202207）
湖南省自然科学基金(2023JJ40505) （2023JJ40505）
长沙理工大学研究生科研创新项目(CLSJCX22031,CLSJCX22032) （CLSJCX22031,CLSJCX22032）
