Influence of Polyaluminum Chloride Residue on the Strength andMicrostructure of Cement-Based Materials

作     者：Ping Xu Zhiwei Zhang Zhenguo Hou Mankui Zheng Jin Tong 

作者机构：School of Civil EngineeringHenan Polytechnic UniversityInternational Joint Research Laboratory of Henan Province for Underground Space Development and Disaster PreventionJiaozuo454003China China Construction Seventh Engineering Division Co.Ltd.Zhengzhou450004China China Construction Seventh Engineering Division Co.Ltd.General Contracting CompanyZhengzhou450004China 

出 版 物：《Fluid Dynamics & Materials Processing》 (流体力学与材料加工（英文）)

年 卷 期：2024年第20卷第6期

页      面：1299-1312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）] 080502[工学-材料学] 

基　　金：Henan Science and Technology Key Project,Research on Key Technology and Performance of Polyaluminum Chloride Residue(PACR)Concrete Preparation(202102310253) National Natural Science Foundation Project“Carbonization Strengthening of Recycled Coarse Aggregate and Its Influence on Mechanical Properties of Recycled Concrete Materials and Structures”(U1904188) 

主　　题：Dechlorinated polyaluminum chloride residue activity index strength microstructure hydration product 

摘      要：In this paper,cement and dechlorinated Polyaluminum Chloride Residue(PACR)have been used to prepare a net slurry and mortar *** hydration activity indicators have been used to quantitatively analyze the dechlorinated PACR hydration *** particular,the effect of dechlorinated PACR content on the compressive strength of mortar has been assessed by means of compressive strength ***,X-ray diffraction(XRD)and scanning electron microscopy(SEM)have been employed to observe the microstructure of the considered hydration *** following results have been *** 28th day activity index of the dechlorinated PACR is 75%,and therefore it meets the criterion for the use of active *** increase in the content of the dechlorinated PACR tends to reduce the compressive strength of mortar specimens,however,it is beneficial to its later strength *** the content is not greater than 10%,the strength remains unchanged,otherwise,it *** PACR does not form a new crystalline phase in the cement slurry,and the dechlorinated PACR remains active until the age of the 28th *** inclusion of the PACR mainly deteriorates the early strength of the cement slurry,but it promotes the production of hydration products in the cement slurry after the 7th day.