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Journal of Materials
Volume 2015 (2015), Article ID 502405, 7 pages
Research Article

A Qualitative Study of Thermochemical Degradation Related with Concrete and Mortar Strength

1School of Engineering, Research and Post-Graduate Studies, Autonomous University of Chihuahua, New Campus, 31125 Chihuahua, Mexico
2Biomaterials Department, School of Dentistry, Autonomous University of Chihuahua, Campus I, 31125 Chihuahua, Mexico

Received 30 November 2014; Accepted 10 March 2015

Academic Editor: Alfonso Castiñeiras

Copyright © 2015 José Mora-Ruacho and Humberto A. Monreal-Romero. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The nondestructive methods applied to the evaluation of concrete use different parameters to be related in the estimated resistance of concrete or other properties. The conducted study has evaluated a qualitative method of thermochemical degradation in concrete and mortar using a solvent acid whose chemical energy is capable of degrading the material. The reported study consisted in performing laboratory tests on mechanical compressive strength of concrete and mortar and thermochemical tests performed on little cores of concrete or mortar immersed in hydrochloric acid contained in a calorimeter system, obtaining several parameters as the time of thermal equilibrium, increase of temperature, degradation energy, and mass loss due to the thermochemical reaction. From the obtained results, these variables were analyzed and served as a parameter to be related with the concrete or mortar strength. The best parameter proved to be a good estimator was the increase of temperature and its degradation energy, whose value was inversely proportional to the strength of the material. Also, it is found that the most significant mechanisms that influenced the thermochemical reaction are the calcium content and the water chemically bound in the cement paste to perform the thermochemical test.