The Performance Evolution Characteristics of Insitu Concrete at the Permafrost Regions

作     者：NING Zuojun LI Haoxin NIE Kangjun Nueraili Maimaitituersun Aihemaitijiang Tuerhong GAO Xiang 宁作君;聂康峻

作者机构：School of TransportationKashi UniversityKashi 844000China KeyLaboratory of Advanced Civil Engineering Materials of Ministry of EducationSchool of Materials Science and EngineeringTongji UniversityShanghai 201804China 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2024年第39卷第6期

页      面：1534-1540页

核心收录：

学科分类：08[工学] 081304[工学-建筑技术科学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0813[工学-建筑学] 

基　　金：Funded by the National Natural Science Foundation of China(Nos.52068035 52078372 and 52478272) 

主　　题：permafrost ambient mineral admixture compressive strength hydration temperature damage degree 

摘      要：This study aimed to investigate the performance evolution characteristics of concrete under permafrost ambient temperatures and to explore methods to mitigate the thermal perturbation by concrete on the permafrost environment.A program was designed to investigate the properties of various concretes at three curing *** compressive strength development pattern of each group was evaluated and the concrete s performance was characterized by compressive strength damage degree,hydration temperature and SEM analysis in a low temperature *** experimental results show that the incorporation of fly ash alone or incombination with other admixtures in concrete under low-temperature curing does not deteriorate its microstructure,and at the same time,it can slow down the hydration rate of cement and significantly reduce the exothermic heat of hydration of *** findings are expected to provide valuable references for the proportioning design of concrete in permafrost environments.