深圳大学学报（理工版）2025，Vol.42Issue(4)：403-411,9.DOI:10.3724/SP.J.1249.2025.04403
丙烯酸类与水泥基类修补砂浆性能对比
Performance comparison between acrylic and cement-based repair mortars
摘要
Abstract
To evaluate the performance differences between organic and inorganic repair mortar,two types of acrylic organic repair materials and one cement-based inorganic repair material were selected to prepare mortars,and their compressive strength,flexural strength,interfacial flexural-tensile strength,tensile bond strength,dry shrinkage rate were tested.The mechanisms underlying the performance differences were explored from the perspective of micropore structure,and the effects of sand type and cementto-sand ratio on the performance of acrylic organic repair mortar were also examined.Results show that,compared with cement-based repair mortars,acrylic organic repair mortars exhibit significantly higher compressive and flexural strength at 2 hours,reaching more than 70%of the 28-day compressive and flexural strength.They also demonstrate superior bonding strength and toughness,although a higher shrinkage rate.Replacing quartz sand with continuously graded manufactured sand notably reduces the amount of air bubbles within the acrylic organic repair mortar,and improves the compressive strength,flexural strength,interfacial flexural-tensile strength,tensile bond strength.Optimal mechanical performance is achieved when the cement sand ratio is 0.4.Furthermore,there is a strong correlation between the interfacial flexural-tensile strength and the tensile bond strength,which has potential interchangeability in evaluating the bonding performance of repair mortars.This research provides valuable technical references for repairing peeling and block defects in in-service concrete structures and precast concrete components.关键词
混凝土/修补材料/丙烯酸类修补砂浆/水泥基类修补砂浆/力学性能/收缩性能Key words
concrete/repair materials/acrylic repair mortar/cement-based repair mortar/mechanical properties/shrinkage performance分类
建筑与水利引用本文复制引用
王建刚,李旭东,田安然,彭丙杰,许文利,李晓帆..丙烯酸类与水泥基类修补砂浆性能对比[J].深圳大学学报（理工版）,2025,42(4):403-411,9.基金项目
National Key R&D Program Project(2023YFB3711405-05) （2023YFB3711405-05）
China Railway Construction Underground Space Utilization Research Program Project(2024-W09) （2024-W09）
Research Project of China Railway 14th Bureau Group Fangqiao Co.Ltd.(YF2022-KY(E)-012) 国家重点研发计划资助项目(2023YFB3711405-05) （YF2022-KY(E）
中国铁建地下空间利用领域科研计划资助项目(2024-W09) （2024-W09）
中铁十四局集团房桥有限公司科研资助项目(YF2022-KY(E)-012) （YF2022-KY(E）
