Mechanical behaviour of bedding mortar under high temperature - analytical propose

This research aims to present a proposal for an analytical equation capable of representing the correlation between compressive strength and dynamic modulus of elasticity as a function of heating temperature, by means of a surface plane for a range of strengths of mortars for structural masonry. Three types of industrialized mortars were chosen based on their reference compressive strengths (4, 10 and 14 MPa), subjected to heating temperatures of 300, 600 and 900 °C, and experimental tests to evaluate compressive strength and dynamic modulus of elasticity. The data obtained were correlated with studies that used similar methodologies (strength ranges of mortars, heating temperatures, specimen shape, heating rate), aiming to establish a behavior standard for mortars for structural masonry subjected to high temperatures.