Thermo-Mechanical Compatibility of Viscoelastic Mortars for Stone Repair.

ABSTRACT: The magnitude of the thermal stresses that originate in an acrylic-based repair material used for the reprofiling of natural sandstone is analyzed. This kind of artificial stone was developed in the late 1970s for its peculiar property of reversibility in an organic solvent. However, it displays a high thermal expansion coefficient, which can be a matter of concern for the durability either of the repair or of the underlying original stone. To evaluate this risk we propose an analytical solution that considers the viscoelasticity of the repair layer. The temperature profile used in the numerical evaluation has been measured in a church where artificial stone has been used in a recent restoration campaign. The viscoelasticity of the artificial stone has been characterized by stress relaxati

SUBMITTER: Demoulin T 

PROVIDER: S-EPMC5456567 | biostudies-literature | 2016 Jan

REPOSITORIES: biostudies-literature