Next Article in Journal
Analysis of MnS Inclusions Formation in Resulphurised Steel via Modeling and Experiments
Next Article in Special Issue
Viscoelastic Parameters of Asphalt Mixtures Identified in Static and Dynamic Tests
Previous Article in Journal
VOC Emissions from Spruce Strands and Hemp Shive: In Search for a Low Emission Raw Material for Bio-Based Construction Materials
Previous Article in Special Issue
Wave Frequency Effects on Damage Imaging in Adhesive Joints Using Lamb Waves and RMS
Open AccessArticle

Non-Destructive Testing of Technical Conditions of RC Industrial Tall Chimneys Subjected to High Temperature

1
Faculty of Civil Engineering, Wroclaw University of Science and Technology, Wroclaw 50-370, Poland
2
Faculty of Engineering, Middle East University, Amman 11831, Jordan
3
Department of Structure Engineering, Faculty of Civil Engineering, Damascus University, Damascus PO Box 30621, Syria
*
Author to whom correspondence should be addressed.
Materials 2019, 12(12), 2027; https://doi.org/10.3390/ma12122027
Received: 16 May 2019 / Revised: 17 June 2019 / Accepted: 18 June 2019 / Published: 24 June 2019
(This article belongs to the Special Issue Non-destructive Testing of Materials in Civil Engineering)
Non-destructive tests of reinforced concrete chimneys, especially high ones, are an important element in assessing their condition, making it possible to forecast their safe life. Industrial chimneys are often exposed to the strong action of acidic substances, They are negatively exposed to the condensation of the flue gases. Condensate affects the inside of the thermal insulation and penetrates the chimney wall from the outside. This is one reason for the corrosion of concrete and reinforcing steel. Wet thermal insulation settles, and drastically reduces its insulating properties. This leads to an increase in temperature in the reinforced concrete chimney wall and creates additional large variations in temperature fields. This consequently causes a large increase in internal forces, which mainly increase tensile and shear stresses. This results in the appearance of additional cracks in the wall. The acid condensate penetrates these cracks, destroying the concrete cover and reinforcement. Thermographic studies are very helpful in monitoring the changes in temperature and consequently, the risk of concrete and reinforcement corrosion. This simple implication between changes in temperature of the chimney wall and increasing inner forces as shown in this article is particularly important when the chimney cannot be switched off due to the nature of the production process. Methods for interpreting the results of thermovision tests are presented to determine the safety and durability of industrial chimneys. View Full-Text
Keywords: nondestructive testing; thermography; monitoring of structures; reinforced concrete chimney; corrosion processes; service life of a structure nondestructive testing; thermography; monitoring of structures; reinforced concrete chimney; corrosion processes; service life of a structure
Show Figures

Figure 1

MDPI and ACS Style

Maj, M.; Ubysz, A.; Hammadeh, H.; Askifi, F. Non-Destructive Testing of Technical Conditions of RC Industrial Tall Chimneys Subjected to High Temperature. Materials 2019, 12, 2027.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map

1
Back to TopTop