摘要
石质文物是一类重要的文化遗产,然而裂隙会导致其产生失稳、渗水、风化等病害,因此,开发一种合适的灌浆材料用于石质文物裂隙修复具有重要意义。本文将氧化石墨烯(GO)掺入天然水硬性石灰(NHL2)制备灌浆材料,采用SEM、TG、XRD和FT-IR等测试研究了GO掺量对NHL2水化进程及水化产物的影响,通过力学性能测试和模拟灌浆试验评价了该材料用于石质文物灌浆加固的可行性。结果表明:添加GO可加速NHL2的水化进程,促进规整致密的花状聚集态水化产物的形成;当GO掺量为0.05%(质量分数)时,试样的水化产物含量最多,力学性能最好,28 d抗压强度和抗折强度分别达2.83和1.63 MPa,相比空白试样分别提高了19.91%和23.40%。此外,灌浆材料与砂岩之间具有优异的黏结强度,两者界面结合紧密,兼容性良好。本研究为石质文物的裂隙灌浆加固提供了参考。
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.
作者
张彪
刘泓宇
齐南
王芬
朱建锋
李立
马涛
罗宏杰
施佩
ZHANG Biao;LIU Hongyu;QI Nan;WANG Fen;ZHU Jianfeng;LI Li;MA Tao;LUO Hongjie;SHI Pei(Key Laboratory of Underground Cultural Relics Conservation Materials and Technology,Ministry of Education,School of Conservation Science and Technology for Cultural Heritage,School of Material Science and Engineering,Shaanxi University of Science and Technology,Xi’an 710021,China;Key Scientific Research Base of Conservation for Brick and Stone Cultural Relics,National Cultural Heritage Administation,Shaanxi Institute for the Preservation of Cultural Heritage,Xi’an 710075,China;Key Laboratory of Silicate Cultural Relics Conservation,Ministry of Education,School of Cultural Heritage and Information Management,Shanghai University,Shanghai 200444,China)
出处
《硅酸盐通报》
CAS
北大核心
2024年第7期2640-2648,共9页
Bulletin of the Chinese Ceramic Society
基金
国家自然科学基金(52102108,52102026,52272020)
中国博士后科学基金面上资助(2021M691997)
陕西省教育厅重点科研计划(22JY009,22JY010)。
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
natural hydraulic lime
graphene oxide
hydration product
microstructure
compatibility
grouting reinforcement
