Biotic and abiotic factors affecting deterioration of Chudhadhuj palace museum

Abstract

This study was carried out at Chudhadhuj palace museum which situated at Sichang Island. It was concentrated on the study of deterioration caused by abiotic factor and biotic factor affecting on Chudhadhuj palace museum. To estimate the light intensity rendering on the objects, a simulated model was developed. The developed model was significantly workable and reliable for analyzing the light intensity and predicting the degree of the deterioration of the target object. Sunlight intensity and sky illumination, with the value 2 and 0.5 respectively, were found to be the appropriated factors of spatial - temporal analysis. In addition, this simulated model was tested to study the deterioration of the historical stone inscriptions situated around Aussadangkhanimit Temple. The results indicated that the degradation of the stone inscriptions related to sunlight intensity and duration of light exposure.The historical stone inscriptions were categorized into 3 groups by weathering degree values, 0.95 -1, 0.695 - 0.703 and 0.531 - 0.537. However, the developed method needs more research for the better results by integrating the other physical factors involved with the deterioration. Furthermore, the deterioration was involved with salt aerosol from the sea. Additionally, this simulated model was used to study the deterioration of lime plaster surfaces on the walls outside Apirom residence. The results revealed that the degradation also related to humidity and light intensity of the plaster surfaces. The surfaces with high humidity and low light intensity rendering obtained high deterioration degree. The study on biodeterioration at Chudhadhuj palace museum showed that there were a lot of biotic factors concerned on the degradating damages. The significant biodeterioration characteristics found on lime plasters were nests of insects, excrement of birds and reptiles, and fungus stains. Moreover, the study suggested that water repellent could be used to decrease this deterioration problem.