[M-IS07] [EE] Conservation of natural geosites and cultural heritages: weathering process and damage assessment

[MIS07-P03] An experimental study for evaluating weathering susceptibility of cave sediments with relief structure on the wall

*Kaisei Sakane², Chiaki T. Oguchi¹ (1.Institute for Environmental Science and Technology, Graduate School of Science and Engineering, Saitama University, 2.Undergraduate Student, Department of Civil Engineering, Saitama University)

Keywords:slaking, wetting and drying experiment, swelling clay

Weathering is a universal phenomenon which is observed not only in natural landscapes but also many historic buildings. Salt weathering is often reported, however, there are very few studies of slaking at these historical sites. The Taya cave in Kanagawa Prefecture is now suffering from exfoliation, which has been attributed to damage by slaking (wetting and drying weathering). To explore these phenomena, simple slaking tests were carried out. Physical properties of the rocks were also measured. The results indicate that that the rocks of the Taya cave system are susceptible to slaking.