红外、可见光诊断技术在北京法海寺壁画中的应用及其保护修复材料研究

Application of infrared thermal imaging and visible light diagnostic technology in murals of Fahai Temple in Beijing and research on protective and restoration materials

通过利用红外热像法和可见光诊断技术获取了北京法海寺大雄宝殿壁画的开裂病害信息,同时研究了针对古建筑壁画开裂病害的地仗层加固修复材料技术。结果表明:在壁画地仗层优化配合比研究中,随着红黏土掺量的增加,拉伸粘结强度和抗压强度均呈上升趋势;龄期90d时,加麻刀纤维的试块拉伸粘结强度达到13.26×10^(-2)MPa,抗压强度达到2.14MPa,加玻璃纤维的试块拉伸粘结强度达到11.15×10^(-2)MPa,抗压强度达到1.93MPa。通过研究壁画地仗层保护修缮材料的优化配比,为法海寺壁画的科学预防性保护修缮提供依据和支撑。

In this paper,infrared thermal imaging and visible light diagnostic technology are used to obtain the information of hollowing and cracking disease of the murals in the Shakya Mani Hall of Fahai Temple in Bei⁃jing.At the same time,the reinforcement and repair material technology of the ground layer for the cracking disease of the ancient building murals is researched.The results show that the tensile bond strength and com⁃pressive strength are on the rise with the increase of red clay content in the study of the optimized mix ratio of mural plaster layer;At the age of 90 days,the tensile bonding strength of the test block with hemp knife fiber reached 13.26×10^(-2) MPa,and the compressive strength reached 2.14MPa.The tensile bonding strength of the test block with glass fiber reached 11.15×10^(-2) MPa,and the compressive strength reached 1.93 MPa.By studying the optimization ratio of materials for the protection and repair of the mural base layer,it provides a basis and support for the scientific and preventive protection and repair of the murals in Fahai Temple.