New Performance Criterion for Thin Spray-on Liners: Tensile Toughness

摘要

This study suggests a new support performance criterion for TSL "Tensile Toughness". For an effective TSL support performance, neither highest strength nor elongation capacity alone is enough by itself. The key criterion for support performance must consider both requirements for load carrying and straining capacities of a TSL. Tensile toughness of materials can combine these two parameters and give better representation of energy absorbance capability of TSLs. For this purpose, 3 different widely used 7-day cured TSLs were tested according to ASTM D-638 tensile testing standard. As a result of these tests, tensile strength, elongation at break were measured and the toughness values were calculated. Details of sample preparation in the laboratory and the testing procedures were also presented in detail. As a result of this study, for the first time in the literature, various TSLs' energy absorbance capacities were found.