Nondestructive testing of concrete methods of test. From references, there were a lot of linear ultrasonic testing procedures in concrete. The quality of the concrete in relation to standard. Ultrasonic pulse velocity analysis in concrete specimens. Method of nondestructive testing of concret, part 1. Pdf ultrasonic pulse velocity analysis in concrete specimens. In this method, the time required to travel of an ultrasonic pulse passing through the concrete is measured. In this test, the strength and quality of concrete or rock is assessed by measuring the velocity of an ultrasonic pulse passing through a concrete structure or natural rock formation. It was reported that upv of specimens decreased with the increase of pvc fibres content fig. Non destructive testing of structures linkedin slideshare. In this test, the strength and quality of concrete or rock is assessed by measuring the velocity of an ultrasonic pulse passing through a concrete structure or natural rock formation this test is conducted by passing a pulse of ultrasonic through concrete to be. Linear ultrasonic test using ultrasonic pulse velocity upv and rebound hammer was introduced to test on site strength of concrete 21. This video animation, animated video explains the concept ultrasonic pulse velocity test for concrete. Ultrasonic pulse velocity testing in its most basic mode is called time of flight.
Pdf nondestructive test has been applied to measure damage in structures. It features unique real time bscans as well as on site cscans, pscans and volume scans. Ultrasonic pulse velocity measurement distance between the two probes measurement. The concrete specimens were immersed in water for 90. Knowing the distance between the two points, the velocity of the wave pulse can be determined. Not all forms of deterioration or damage actually change the pulse velocity of the material, but they affect the actual path for the pulse to travel from transmitter to receiver. Ultrasonic testing procedure for concrete structure. Dec 08, 2014 ultrasonic pulse velocity measurement has been found to be a valuable and reliable method of examining the interior of a body of concrete in a truly nondestructive manner. It is possible to obtain a total control of a structure, using the properties variations with the time. An ultrasonic pulse velocity upv test is an insitu, nondestructive test to check the quality of concrete and natural rocks.
Ultrasonic testing of concrete fprimec solutions inc. Cement and concrete ced 2 designator of legally binding document. For nondestructive testing of concrete cnd, methods based on the propagation of mechanical waves frequently called acoustic waves, the most used are. What is ultrasonic testing of concrete for compressive strength. Review of the ultrasonic pulse velocity evaluating. Feb 02, 20 ultrasonic pulse velocity test it measures the time of travel of an ultrasonic pulse passing through the concrete. Based on these syllabi, training course notes have been produced to cover industrial radiography iaea training course series no. The test procedure has been standardized as standard test method for pulse velocity through concrete astm c 597, 2016. The moisture concrete usually 2 percent higher pulse velocity than dry concrete. This testing method can be used for quality assurance and quality control purposes to determine the presence of cracks and their approximate depth. M chandra kishen 2,b 1department of civil engineering, indian institute of technology kharagpur, kharagpur, india 2department of civil engineering, indian institute of science, bangalore 560012, india asrikalyan. Ultrasonic testing is known as ut or ultrasonic pulse velocity test or upv test. Abstractultrasonic pulse velocity test is one of the best known techniques which can be used for the measurement of concrete uniformity, its elastic modulus, layer thickness and presence of honeycombing in concrete.
Experimental evaluation of cracks in concrete by ultrasonic pulse velocity t sri kalyan 1, a and j. The pulse velocity in a material depends on its density and. Ultrasonic pulse velocity in concrete using direct and indirect transmission article pdf available in aci materials journal 986 november 2001 with 3,951 reads how we measure reads. Part 203, is the only one of this type that shows potential for testing concrete strength insitu. Review of the ultrasonic pulse velocity evaluating concrete.
The experimental studies using ultrasonic pulse velocity and schmidt rebound hammer as nondestructive tests ndt were presented in this paper to establish a correlation between the compressive strengths of compression tests and ndt values. Ultrasonic pulse velocity upv test is a nondestructive popular test used to examine the homogeneity, quality, cracks, cavities, and defects in concrete. The ultrasonic pulse velocity in cementbased materials depends mainly on its elastic modulus and, since the latter is closely related to mechanical strength how is elastic modulus related to strength, something can be st iff and weak e. There are three methods adopted for ultrasonic pulse velocity testing on. Effect of length, shape and size of concrete member. The pundit 200 is a bestinclass upv test instrument with an extended range of measurement modes. The apparatus for ultrasonic pulse velocity measurement consists of the following. This test is done to assess the quality of concrete by ultrasonic pulse velocity method as per is. Common structures are assessed with the use of practical and. Strength assessment of recycled aggregate concrete by. The velocity of a pulse of ultrasonic energy in concrete is influenced by the elastic stiffness and mechanical strength of the concrete.
In this paper, water content and temperature effect on the ultrasonic pulse velocity upv of concrete was investigated. Ultrasonic pulse velocity tester, concrete testing. What is ultrasonic testing of concrete for compressive. Ultrasonic pulse velocity measurement has been found to be a valuable and reliable method of examining the interior of a body of concrete in a truly nondestructive manner. Upv tests are also performed to predict strength of early age concrete. Evaluation of condition of concrete structures using ultrasonic. Pundit pd8000, the wireless inspection solution with multichannel ultrasonic pulse echo technology, brings on site structural concrete. Concrete, corrosion, nondestructive test, ultrasonic pulse velocity. Pundit ultrasonic pulse velocity, ultrasonic pulse echo. The pulse is generated by a transmitter and received by a receiver. Civil engineering animated videos, civil engineering videos social media links. In addition, the pulse velocity in saturated concrete is less sensitive to changes in its relative quality. Ultrasonic pulse velocity method of non destructive test. Focusing on it, the ultrasonic tests allow to estimate a correlation between the variables and the compressive strength.
Study of concrete quality assessment of structural elements. Ultrasonic pulse velocity test on concrete civiconcepts. The ultrasonic testing method is based on the use of equipment composed of transducers which produce and receive the ultrasonic wave of 0. Apr, 2017 ultrasonic testing of concrete is an effective way for quality assessment and uniformity, and crack depth estimation.
The method of calculation depends on which con crete characteristics are measured. It specifies a method for the determination of the velocity of propagation of pulses of ultrasonic longitudinal waves in concrete. Ultrasonic pulse velocity test of concrete properties as. Study of concrete quality assessment of structural. Ultrasonic pulse velocity testing, mainly used to measure the sound velocity of the concrete and hence the compressive strength of the concrete. Rugged touchscreen with intuitive user interface for best. Cube test specimens were made of concrete with watercement ratio of 0. Ultrasonic pulse velocity test consists of measuring travel time, t of ultrasonic pulse of 50 to 54 khz, produced by an electroacoustical transducer, held in contact with one surface of the concrete member under test and receiving the same by a similar transducer in contact with the surface at the other end. The pundit 250 array is a modular phased array pulse echo instrument incorporating drypoint contact transducers. Ultrasonic pulse velocity tester with microprocessor. Ultrasonic pulse velocity method civil engineering.
Ultrasound auscultation sonic or ultrasonic pulse velocity upv the impactecho the acoustic emission other techniques such as seismic tomography or surface waves remain of limited use. Summary of estimated concrete properties using ultrasonic pulse velocity also the compressive strength of the samples is estimated from the plot represented in fig 3. See ultrasonic pulse analyser pulsonic model 58e4900 with incorporated oscilloscope, suitable for determining the dynamic modulus of elasticity, the measurement of the attenuation of the transmitted energy, the spectrum analysis by fft method, the concrete strength evaluation combining the pulse velocity with the rebound number of the concrete. For the love of physics walter lewin may 16, 2011 duration. Ultrasonic pulse velocity ultrasonic concrete tester. The equipment consists of two transducers, usually in the form of metal cylindrical heads, one of which is used to transmit an ultrasonic pulse and the other is a receiver. Ultrasonic pulse velocity test of concrete youtube. Ultrasonic testing is one of the nondestructive test method based on the transmission of the ultrasonic pulse in the component or materials like concrete, steel, etc. Ultrasonic pulse velocity testing is typically used to test homogeneous materials such as concrete, metals, and welds. The underlying principle of this test is the method consists of measuring the time of travel of an ultrasonic pulse passing through the concrete being tested. At present the ultrasonic pulse velocity method bs 188. The principle of ultrasonic pulse velocity measurement involves sending a wave pulse into concrete and measuring the travel time for the pulse to propagate through the concrete. The presence of cracks,voids and other imperfections, 3. An experimental study is conducted to compare direct, indirect and semidirect ultrasonic pulse velocity upv measurements on a total of 30 concrete blocks 30.
Jun 07, 2018 this video animation, animated video explains the concept ultrasonic pulse velocity test for concrete. The upv methodology relies on direct arrival of compressional waves. Nov 11, 2019 the ultrasonic pulse velocity test is performed on concrete to asses the quality of concrete by passing ultrasonic pulse velocity through it as per is. Legally binding document step out from the old to the newjawaharlal nehru. Ultrasonic pulse velocity test consists of measuring travel time, t of ultrasonic pulse of 50 to 54 khz. Ultrasonic pulse velocity testing of concrete is based on the pulse velocity method to provide information on the uniformity of concrete, cavities, cracks and defects. Water content and temperature effect on ultrasonic pulse. Ultrasonic pulse velocity tester concrete testing pcte. Ultrasonic pulse velocity uspv test has gained considerable popularity all over the world. The ultrasonic pulse in this instance is a pwave or compression wave. Standard test method for pulse velocity through concrete. Modern equipment is robust, reasonably cheap and easy to operate, and reliable even under site conditions. An overview of ultrasonic pulse velocity upv testing for. Compressive strength formula for concrete using ultrasonic.
This refers to timing the arrival of an ultrasonic pulse from one transducer to another through a solid medium. Ultrasonic pulse velocity method of non destructive test of. Assessment of structural integrity and localization of defects and voids in concrete and rock through ultrasonic testing. A graph showing the variation of compressive strength mpa with calculated pulse velocity kms from experimental data 5. Ultrasonic pulse velocity tester, concrete testing equipment. Ultrasonic pulse velocity test it measures the time of travel of an ultrasonic pulse passing through the concrete. In the ultrasonic pulse velocity test method, an ultrasonic wave pulse through concrete is created at a point on the surface of the test object, and the time of its travel from that point to another is measured. Changes in the structure of the concrete which may occur with time, 4. Astm c597 standard test method for pulse velocity through concrete bs en 12504 4. A series of tests were performed to examine the relationship between water content and upv of concrete with different aggregate mixture proportions. Pdf ultrasonic pulse velocity in concrete using direct. The ultrasonic pulse velocity upv systems are designed to identify and map voids, honeycomb, cracks, delaminations, and other damage in concrete, wood, masonry, stone, ceramics, and metal materials. Guidebook on nondestructive testing of concrete structures.