Using infrared thermography to determine the presence and correct placement of grouted cells in single-width concrete masonry unit (CMU) walls

Gregory R. Stockton; Lee R. Allen

doi:10.1117/12.342318

19 March 1999 Using infrared thermography to determine the presence and correct placement of grouted cells in single-width concrete masonry unit (CMU) walls

Gregory R. Stockton, Lee R. Allen

Author Affiliations +

Proceedings Volume 3700, Thermosense XXI; (1999) https://doi.org/10.1117/12.342318
Event: AeroSense '99, 1999, Orlando, FL, United States

Abstract

Determining the placement of reinforcing grout in single-width CMU (Concrete Masonry Unit) walls has, in the past, been a painstaking and destructive undertaking. Usually, a test is performed because -- by accident -- missing cells are discovered when a wall penetration is retrofitted or change order is executed, requiring that the wall be opened. Often, a hammer or hammer drill is used to punch holes where the grouting is supposed to be. The test results are used to extrapolate the extent of the problem. This method falls short, since the sample is so small, that only outright fraud can be found, and excess grouting cannot be determined. This paper discusses the results of a joint effort between Stockton Infrared Thermographic Services, Inc. (SITS) and Allen Applied Infrared Technology, Inc. (AAIT) to produce a methodology for using non-destructive infrared thermography to ensure that the design specifications are being met.

Citation Download Citation

Gregory R. Stockton and Lee R. Allen "Using infrared thermography to determine the presence and correct placement of grouted cells in single-width concrete masonry unit (CMU) walls", Proc. SPIE 3700, Thermosense XXI, (19 March 1999); https://doi.org/10.1117/12.342318

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