Abstract
In this research, the caisson painting of Dayu Temple in Hancheng, Shaanxi, China, was analyzed via a multi-analytical methodology, using a pH meter, an ultra-depth-of-field optical microscope, a scanning electron microscope-energy dispersive spectrometer (SEM-EDS), a high-resolution X-ray diffractometer (XRD), a micro-confocal laser Raman spectrometer, a gas chromatography mass spectrometer (GC-MS), and X-ray fluorescence spectroscopy (XRF). With the corroborative evidence derived from the above analyses, it could be determined that the caisson painting of Dayu Temple was painted on bamboo paper and attached to hemlock wood substrate of the Pinaceae Tsuga genus using starch paste, with common colorants such as carbon black, cinnabar mixed with a small amount of red lead, ultramarine, and ultramarine mixed with Paris green, with animal glue having been adopted as a sizing agent. These results provide important scientific data for the production craft of precious caisson paintings, contributing to the revelation of their historic, artistic, and scientific value, and should enable conservators to make informed decisions in restoration.
Highlights
Dayu Temple [1] is located in the north of Zhouyuan Village, Sudong Township, Hancheng, Shaanxi Province, formerly known as Daxia Yuwang
It is said that, during the time of Tang Yao Yu Shun, he used the method of dredging to control the catastrophic floods in the Yellow River Basin, which benefited all people
This work performed a preliminary investigation of the caisson painting of Dayu
Summary
Dayu Temple [1] is located in the north of Zhouyuan Village, Sudong Township, Hancheng, Shaanxi Province (as is shown in Figure 1), formerly known as Daxia YuwangTemple. The temple is dedicated to his firm and indomitable perseverance, and hardworking and brave Chinese national spirit It was built in the fifth year of Dade in the Yuan Dynasty (1301) and rebuilt in the seventh year of. Due to these factors, the wooden board base attached to the caisson paintings has suffered from cracking, fracture, damage, decay, and other deterioration, placing the caisson paintings on the verge of self-destruction. This study aimed to use the multivariate analysis method to analyze and test the wooden board base, paper type, acidification degree, surface pigment, etc., of the caisson paintings of Dayu Temple in Hancheng, as the basis for analyzing the cause of the deterioration and the design of plans for restoration and protection
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