Abstract

REIS, João Marciano Laredo dos. Effect of temperature on the mechanical properties of polymer mortars. Mat. Res. [online]. 2012, vol.15, n.4, pp. 645-649.  Epub Aug 07, 2012. ISSN 1516-1439.  http://dx.doi.org/10.1590/S1516-14392012005000091.

This paper presents the results of an experimental program to investigate the effect of temperature on the performance of epoxy and unsaturated polyester polymer mortars (PM). PM is a composite material in which polymeric materials are used to bond the aggregates in a fashion similar to that used in the preparation of Portland cement concrete. For this purpose, prismatic and cylindrical specimens were prepared for flexural and compressive tests, respectively, at different temperatures. Measurements of the temperature-dependent elastic modulus and the compressive and flexural strength were conducted using a thermostatic chamber attached to a universal test machine for a range of temperatures varying from room temperature to 90 ºC. The flexural and compressive strength decreases as temperature increases, especially after matrix HDT. Epoxy polymer mortars are more sensitive to temperature variation than unsaturated polyester ones.

Keywords : polymer mortars; temperature dependency; material behavior.