硅酸盐通报2024，Vol.43Issue(7)：2640-2648,9.
氧化石墨烯对天然水硬性石灰水化及力学性能的影响
Effect of Graphene Oxide on Hydration and Mchanical Properties of Natural Hydraulic Lime
摘要
Abstract
The stone cultural relics are important cultural heritage,however,fissures can lead to destabilization,water seepage and weathering diseases.Therefore,it is of great significance to develop a suitable grouting material for repairing fissures in stone cultural relics.The grouting material was prepared by adding graphene oxide(GO)into natural hydraulic lime(NHL2).The influence of GO content on hydration process and products of NHL2 was studied using SEM,TG,XRD and FT-IR.The feasibility of this material for grouting reinforcement of stone cultural relics was evaluated by mechanical properties and simulated grouting tests.The results indicate that the addition of GO can accelerate hydration process and promote formation of regular and dense flower-like aggregated hydration products.When GO content is 0.05％(mass fraction),the sample has the highest content of hydration products and the best mechanical properties.The compressive strength and flexural strength of samples cured for 28 d can reach 2.83 and 1.63 MPa,which increases by 19.91％and 23.40％with the blank sample,respectively.Furthermore,there is excellent bonding strength between grouting material and sandstone,the interface of the two is closely combined with good compatibility.This work provides reference for grouting reinforcement of fissures in stone cultural relics.关键词
天然水硬性石灰/氧化石墨烯/水化产物/微观结构/兼容性/灌浆加固Key words
natural hydraulic lime/graphene oxide/hydration product/microstructure/compatibility/grouting reinforcement分类
建筑与水利引用本文复制引用
张彪,刘泓宇,齐南,王芬,朱建锋,李立,马涛,罗宏杰,施佩..氧化石墨烯对天然水硬性石灰水化及力学性能的影响[J].硅酸盐通报,2024,43(7):2640-2648,9.基金项目
国家自然科学基金(52102108,52102026,52272020) （52102108,52102026,52272020）
中国博士后科学基金面上资助(2021M691997) （2021M691997）
陕西省教育厅重点科研计划(22JY009,22JY010) （22JY009,22JY010）
