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The Scientific World Journal
Volume 2014, Article ID 829794, 5 pages
http://dx.doi.org/10.1155/2014/829794
Research Article

Determine the Compressive Strength of Calcium Silicate Bricks by Combined Nondestructive Method

Faculty of Civil Engineering, Brno University of Technology, Institute of Technology of Building Materials and Components, Veveri 331/95, 60200 Brno, Czech Republic

Received 30 June 2014; Revised 14 August 2014; Accepted 15 August 2014; Published 3 September 2014

Academic Editor: Dimitrios G. Aggelis

Copyright © 2014 Jiri Brozovsky. 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.

Abstract

The paper deals with the application of combined nondestructive method for assessment of compressive strength of calcium silicate bricks. In this case, it is a combination of the rebound hammer method and ultrasonic pulse method. Calibration relationships for determining compressive strength of calcium silicate bricks obtained from nondestructive parameter testing for the combined method as well as for the L-type Schmidt rebound hammer and ultrasonic pulse method are quoted here. Calibration relationships are known for their close correlation and are applicable in practice. The highest correlation between parameters from nondestructive measurement and predicted compressive strength is obtained using the SonReb combined nondestructive method. Combined nondestructive SonReb method was proved applicable for determination of compressive strength of calcium silicate bricks at checking tests in a production plant and for evaluation of bricks built in existing masonry structures.