Water absorption test of weathering rock samples.

In order to fully assess the protection of Limestone cultural relics from all forms of deterioration in Zhejiang Province, this study explored the relationship between the strength, longitudinal wave velocity and water absorption of limestone surface through indoor and field tests, and obtained a set of scientific evaluation methods for evaluating the surface weathering degree of limestone cultural relics. The results show: the surface layer strength of limestone and water absorption, longitudinal wave velocity and water absorption have obvious laws, good fitting effect, all have strong negative correlation; the humidity environment has a greater effect on the water absorption of limestone surface layer, the lower the humidity of the test environment, the more obvious the pattern between the strength of limestone surface layer, longitudinal wave velocity and water absorption. The study of water absorption on rock surfaces concluded that water absorption is closely related to the degree of weathering, which plays an important role in the further conservation of limestone cultural relics.为全面评估浙江省石灰岩文物抵御各类劣化作用的防护效果，本研究通过室内与现场试验，探究了石灰岩表层强度、纵波速度与吸水率之间的关联，并构建了一套科学的石灰岩文物表层风化程度评价体系。研究结果表明：石灰岩表层强度、纵波速度与吸水率三者间存在显著规律，拟合效果优异，且均呈较强负相关关系；湿度环境对石灰岩表层吸水率的影响较为显著，试验环境湿度越低，石灰岩表层强度、纵波速度与吸水率之间的相关性越显著。针对岩石表面吸水率的研究证实，吸水率与风化程度密切相关，该结论可为石灰岩文物的后续保护工作提供重要参考依据。