Assessment of Addition of Calcinated Clay-Limestone-Plaster to Ordinary Portland Cement in Brickwork Mortars

摘要

The present research work includes the influence of the LC2 pozzolanic addition in the behavior of type II brickwork mortars from a series of mechanical-physical tests according to specifications established by the 175:2002 Cuban Norm (NC) This addition is made up of 60% calcinated clay, 40% limestone and 10% plaster. The analysis of the LC2 addition behavior in the brickwork mortars was the result of an experimental design in which the definitions of dependent variables according to mortars properties in their different states, as well as independent vari-ables under the analysis of factors, such as: cement volume, lime and addition to be used, were considered. Raw-materials were characterized and forty-eight 40 mm x 40 mm x 160 mm prismatic test tubes for the water-absorption-by-capillarity and flexo-compression tests were elaborated. In the case of adhesion strength by traction, ceramic slabs were used as support. The analysis of the results allowed the satisfac-tory validation of the use of the LC2 addition in brickwork mortars according to Cuban Norm specifications.