Salt freezing resistance improvement of cement-based materials incorporated with calcined layered double hydroxide

作     者：Jinyang Huo Tonghuan Zhang Zhenjun Wang Xiaofeng Wang Xin Ji Pei Wang Jinyang Huo;Tonghuan Zhang;Zhenjun Wang;Xiaofeng Wang;Xin Ji;Pei Wang

作者机构：School of Materials Science and EngineeringChang'an UniversityXi'an 710064China Engineering Research Center of Transportation Materials of Ministry of EducationChang'an UniversityXi'an 710064China Henan Communications Planning&Design Institute Co.Ltd.Zhengzhou 450052China 

出 版 物：《Journal of Traffic and Transportation Engineering(English Edition)》 (交通运输工程学报（英文版）)

年 卷 期：2023年第10卷第3期

页      面：427-440页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：This work is supported by Science and Technology Development Project of Xinjiang Production and Construction Corps (No. 2021DB005) Project of Department of Transport of Shaanxi Province (21-53K) the Central Plains Thousand People Plan of Henan Province (204200510004) the Fundamental Research Funds for the Central Universities, CHD (300102312724, 300102312402). The authors also thank to the reviewers for their valuable comments and suggestions concerning our manuscript 

主　　题：Cement-based materials Calcined layered double hydroxide Salt freezing resistance Micro structure Salt freezing damage 

摘      要：Salt freezing damage has severe impacts on durability of cement-based materials(CBMs).Calcined layered double hydroxide(CLDH),as an efficient environmental-friendly adsorption material,can impart excellent salt freezing resistance to *** this work,salt freezing resistance improvement of CBMs incorporated with CLDH was experimentally evaluated by chloride binding capacity,mass loss rate,relative dynamic elastic modulus,setting time,compressive strength,and micro structure *** these,the salt freezing damage model was established to effectively express the quantitative relationship between influencing factors and evaluation indexes of the salt freezing resistance of *** show that CLDH can reconstruct its original layered structure to form reconstructed layered double hydroxide(RLDH).RLDH combines with chloride ions to form RLDH-Cl recrystallization,which can improve chloride binding capacity and pore structures of CBMs to relieve the salt freezing *** salt freezing damage model indicates that the suitable CLDH content can evidently alleviate the salt freezing damage,which facilitates the quantitative analysis of the effect of CLDH on the salt freezing resistance of CBMs.