Parallel-seismic tests are non-destructive surface techniques used to test the quality of pile foundations. It is used to determine the length and integrity of pile foundations that are not accessible (too long and slender or buried below a pile cap). ...
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Non-Destructive Testing of Underwater Concrete Structures
Non-destructive testing (NDT) is performed on underwater concrete structures as a part of structural investigation, routine preventive maintenance programs, or examinations prompted by an accident or catastrophic event. Some of the underwater concrete NDT techniques include sounding, echo sounders, side-scan sonar, ...
How to Inspect a Structure Using Acoustic Emission Testing?
Acoustic emission (AE) is defined as the physical phenomenon in which a material generates elastic waves when subjected to stress or deformation. These signals are registered using a non-destructive test method (NDT) called the acoustic emission test. An acoustic emission ...
What to Do if Concrete Cylinder Test Fails at 28 Days?
The failure of the concrete cylinder test at 28 days occurs due to several factors like improper casing and curing of specimens and an incorrect mix of concrete used for construction. The cause of the failure should be identified by ...
How does a Ground Penetrating Radar (GPR) Work? [PDF]
![How does a Ground Penetrating Radar (GPR) Work? [PDF]](https://i0.wp.com/theconstructor.org/wp-content/uploads/2020/05/How-does-a-Ground-Penetrating-Radar-GPR-Work_-629x420.jpg)
A Ground-penetrating radar (GPR) is a non-destructive technique used for investigating the characteristics of the subsurface. It is a real-time NDT instrument that employs high-frequency radio waves to study the underground surface. This technique provides high-resolution data within a short ...
How to Perform Magnetic Particle Inspection? [PDF]
![How to Perform Magnetic Particle Inspection? [PDF]](https://i0.wp.com/theconstructor.org/wp-content/uploads/2020/05/ndt-629x420.jpg)
Magnetic Particle Inspection (MPI) is a popular non-destructive testing (NDT) method. MPI helps to detect surface and subsurface faults and discontinuities in ferromagnetic metals and their alloys such as nickel, iron, and cobalt. Steel, automobile, petrochemicals, power, and aerospace industries ...
Standard Deviation for Compressive Strength of Concrete with Example [PDF]
![Standard Deviation for Compressive Strength of Concrete with Example [PDF]](https://i0.wp.com/theconstructor.org/wp-content/uploads/2020/04/Standard-Deviation-for-Compressive-Strength-of-Concrete-with-Example-629x420.jpg)
Standard deviation for concrete is the method to determine the reliability between the compressive strength results of a concrete batch. The standard deviation serves as the basis for control of variability in the test results of concrete for the same ...
Fire Damage Mechanism of RC Structure and Assessment Method
Fire cause concrete surface cracking and crazing, chemical decomposition, and microcracking and spalling. These impacts can significantly change the properties of structural concrete, reducing strength and durability, and altering structural behavior. Assessment and evaluation of damages caused by fire is ...