Ключевые слова:
Calibration, Heavy clay ceramics, Freezing tests, Test equipment, Low-pressure tests, Water-absorption tests, Freeze-thaw tests, Tiles, Visual inspection (testing), Damage, Defects, Testing conditions, Dry density, Ceramics, Density measurement, Thermal testing, Specimen preparation, Roofing tiles, Thermal-cycling tests, Frost susceptibility, Test specimens, Environmental testing, Roof coverings