Non-Destructive Tests – The Constructor https://theconstructor.org Sat, 09 Apr 2022 18:38:28 +0000 en-US hourly 1 https://i0.wp.com/theconstructor.org/wp-content/uploads/2021/04/cropped-The-Constructor-favicon-tinified2-1.png?fit=32%2C32&ssl=1 Non-Destructive Tests – The Constructor https://theconstructor.org 32 32 181067336 Parallel-Seismic Test on Pile Foundation https://theconstructor.org/practical-guide/ndt/parallel-seismic-test-on-pile-foundation/563101/ Sat, 09 Apr 2022 18:36:32 +0000 https://theconstructor.org/?p=563101 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). Compared to other non-destructive surface techniques, the parallel seismic method is more versatile for determining […]

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]]> 563101 Non-Destructive Testing of Underwater Concrete Structures https://theconstructor.org/practical-guide/ndt/non-destructive-testing-of-underwater-concrete-structures/562845/ Wed, 30 Mar 2022 17:38:19 +0000 https://theconstructor.org/?p=562845 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, etc.  This article discusses the NDT techniques and instruments used for underwater concrete investigation. 1. […]

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]]> 562845 How to Inspect a Structure Using Acoustic Emission Testing? https://theconstructor.org/practical-guide/importance-acoustic-emission-test-construction/155456/ Fri, 27 Nov 2020 17:30:48 +0000 https://theconstructor.org/?p=155456 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 test is conducted to monitor a member’s structural health to assess its retrofitting and repairing […]

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]]> 155456 What to Do if Concrete Cylinder Test Fails at 28 Days? https://theconstructor.org/practical-guide/concrete-cylinder-test-fails/55892/ Fri, 28 Aug 2020 14:31:54 +0000 https://theconstructor.org/?p=55892 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 engineers, based on which proper actions need to be taken. The first step should be […]

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]]> 55892 How does a Ground Penetrating Radar (GPR) Work? [PDF] https://theconstructor.org/practical-guide/ndt/how-ground-penetrating-radar-gpr-work/43370/ Wed, 27 May 2020 07:03:10 +0000 https://theconstructor.org/?p=43370 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 period. GPR employs electromagnetic waves to image the subsurface. GPR is a geophysical survey method […]

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]]> 43370 How to Perform Magnetic Particle Inspection? [PDF] https://theconstructor.org/practical-guide/ndt/how-to-perform-mpi/43254/ Sat, 23 May 2020 13:40:51 +0000 https://theconstructor.org/?p=43254 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 often use MPI to determine a component’s fitness-for-use. A variety of castings, welding, and forgings […]

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]]> 43254 Standard Deviation for Compressive Strength of Concrete with Example [PDF] https://theconstructor.org/concrete/standard-deviation-compressive-strength-concrete/39446/ Thu, 16 Apr 2020 07:58:45 +0000 https://theconstructor.org/?p=39446 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 batch of concrete. It is a statistical method that is based on the correlation analysis, […]

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]]> 39446 Fire Damage Mechanism of RC Structure and Assessment Method https://theconstructor.org/practical-guide/fire-damage-mechanism-rc-structure-assessment/38378/ https://theconstructor.org/practical-guide/fire-damage-mechanism-rc-structure-assessment/38378/?noamp=mobile#comments Sat, 14 Mar 2020 19:18:51 +0000 https://theconstructor.org/?p=38378 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 substantially significant to specify the condition of the structure. The assessment of damages is used […]

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