Sustainable concrete: Material and structures Application of acoustic emission testing to crack detection in Sprayed Fibre Reinforced Concrete tunnel linings samples

2015 ◽  
pp. 45-50
Keyword(s):  
Acoustic Emission ◽  
Reinforced Concrete ◽  
Crack Detection ◽  
Fibre Reinforced Concrete ◽  
Concrete Material ◽  
Sustainable Concrete ◽  
Emission Testing ◽  
Acoustic Emission Testing

STANDARDS FOR THE TECHNICAL STATE TESTING OF REINFORCED CONCRETE STRUCTURES BY MEANS OF ACOUSTIC EMISSION METHOD

2020 ◽  
pp. 32-39
Author(s):  
A. I. Sagaydak ◽  
V. V. Bardakov ◽  
S. V. Elizarov ◽  
V. I. Ivanov
Keyword(s):  
Acoustic Emission ◽  
Reinforced Concrete ◽  
Concrete Beams ◽  
Concrete Strength ◽  
Experimental Studies ◽  
Test Method ◽  
Reinforced Concrete Beams ◽  
Damage Degree ◽  
Emission Testing ◽  
Acoustic Emission Testing

The review of 3 standards in the field of concrete and reinforced concrete acoustic emission testing, developed and issued by International Organization for Standardization in 2019 is provided in the article. The first standard describes the process of acoustic emission signals measuring in concrete and reinforced concrete. The second standard describes test method for damage qualification of reinforced concrete beams. This standard allows dividing the damage degree of reinforced concrete beams into 3 groups: minor, intermediate, heavy. The third standard describes method for active cracks classification in concrete. This standard allows dividing growing cracks into 2 types: tensile cracks and other crack types (shear). Experimental studies on the correctness assessment of these standards by reinforced concrete beams three-point bending testing with incremental cyclic load were carried out. In total 5 RC beams of heavy concrete with different concrete strength and reinforcing type were tested. Based on the testing results the correctness of the criteria and methods presented in the standards was confirmed.

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