Multi-Analytical Investigations of the Medieval Turkish Bath from Golești Open Air Museum

Abstract

The Golești Manor ensemble consists of architectural monuments dating back to the 17th, 18th, and 19th centuries, with ephemeral architecture roots from Phanariot times but also some pre- Brancovan influences. The Turkish steam bath is placed in the northeast of the enclosure, and it is thought to have been built by Stroe Leurdeanu. Although there are still original fragments of the old plaster that have been preserved, the Turkish bath has undergone several restorations through time, some of them poorly documented. Hyperspectral imaging (HSI) combined with LIBS were used in order to analyze the bricks and the mortars, evaluate their preservation state, map the original elements, and document and classify the interventions previously made. Based on the supervised classifications, several areas of interest were selected for LIBS elemental analysis, and multivariate data analysis was conducted in order to discriminate similar composition materials and to map the interventions and the original. By analyzing the variability of the spectral profiles, different algorithms were applied to the SWIR hyperspectral images in order to classify the main elements of the brickwork.