Long-term consolidation effect of polyurethane with multi-concentration on sandstone cultural heritage of the Confucian Temple in Pingxiang, Jiangxi Province
Year: 2026
Type: article
Abstract: The Pingxiang Confucian Temple is a provincially protected cultural relic site in Jiangxi, China. Most of its stone components have long been exposed to open-air or semi-open-air conditions and suffer from severe weathering, including surface dissolution, powdering, and flaking, driven by high temperature–humidity and acid-rain corrosion. In this study, a polyurethane-based penetrating consolidant was applied to sandstone relics from the temple. Different volumetric proportions of deionized water were used to prepare consolidant formulations, and penetration-consolidation experiments were conducted under open-air and semi-open-air service conditions. The consolidant performance and structural evolution were systematically evaluated through long-term monitoring of morphological changes and continuous tracking of the mechanical properties of the stone substrate. The results provide methodological references and technical guidance for penetration-consolidation treatments of sandstone relics in Jiangxi Province.
Source: npj Heritage Science
Authors: Yukuan Wang, Ying Yang, Haiping He
Language: English
Subfield: Earth-Surface Processes
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W7225431032