Application of ultrasonic pulse velocity techniques for. The ultrasonic pulse echo technique is a widely used method to obtain ultrasonic velocity data for solids. Zero calibration with depuration of the time for the pulse to go through the probes. The apparatus for ultrasonic pulse velocity measurement consists of the following. The testing procedure is consisting of upv test by direct, indirect and semidirect method at. The maximum compressive strength and ultrasonic pulse velocity upv have been observed with the samples containing bfs. The test procedure has been standardized as standard test method for pulse velocity through concrete astm c 597, 2016. It is possible to determine concrete uniformity, to control its quality, to follow up the deterioration, to check the presence of.
Ultrasonic pulse velocity test it measures the time of travel of an ultrasonic pulse passing through the concrete. An ultrasonic pulse velocity upv test is an insitu, nondestructive test to check the quality of concrete and natural rocks. Principle of test the method consists of measuring the time of travel of an ultrasonic pulse passing through the concrete being tested. Pdf ultrasonic pulse velocity analysis in concrete specimens. The sample to be studied is prepared with two flat and parallel faces, usually oriented perpendicularly to a major crystallographic axis.
The method consists of measuring the ultrasonic pulse velocity through the concrete with a generator and a receiver. The ultrasonic pulse velocity technique first introduced by long, kurtz and sandenaw 1945 for evaluating the non destructive method of testing for quality of concrete by transmitting a irrational pulse to travel a known distance through a concrete. To learn more about upv method, and its applications, click here. The ultrasonic pulse or wave is produced and received by an electroacoustical transducer. Linear ultrasonic test using ultrasonic pulse velocity upv.
Ultrasonic pulse velocity method civil engineering. To assess the quality of concrete by ultrasonic pulse velocity method as per is. This communication aims to revisit this method emphasizing on its methodology and norms or standards that can guide its use on the assessment of the strength of concrete on site. It was found that the velocity depended primarily upon the elastic properties of the material and was almost independent of geometry. Use the uk1401 to measure the compression wave pwave velocity of the test area. Ultrasonic pulse velocity method civil engineering portal. Impact echo method, pulse echo method and pulse velocity method 1. Ultrasonic material analysis is based on a basic principle of physics. 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 pulse velocity in concrete using direct and indirect transmission. Pulse velocity measurement crack depth measurement. The ultrasonic pulse is produced by the transducer. Ultrasonic pulse velocity analysis in concrete specimens. It features online data acquisition, waveform analysis and full remote control of all transmission parameters.
The tests can be performed on samples in the labo ratory or onsite. At present the ultrasonic pulse velocity method bs 188. There was 50 to 75% of probability of corrosion in beam member, due to shifting towards more negative values getting chances of corrosion of reinforcement. Commonly called the ultrasonic pulse velocity upv is a comprehensive method, which provides information on both the mechanical. Ultrasonic pulse velocity testing bestinclass ultrasonic testing instrument providing superior features for onsite testing. In particular, its ability to examine the state of concrete in depth is undoubtedly very good. Influence of test conditions the pulse velocity in concrete may be influenced by any or all of the following. A test procedure, described in bs 1881 to determine indirect wave velocities, was refined. This test is done to assess the quality of concrete by ultrasonic pulse velocity method as per is. Vmeter system for ultrasonic pulse velocity in concrete, wood, ceramic and other coarse grained and construction materials.
This occurs because these methods do not affect the appearance and the performance of the analyzed structures. Ultrasonic pulse velocity tester at best price in india. 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. Experimental evaluation of cracks in concrete by ultrasonic pulse velocity t sri kalyan 1, a and j. Compressive strength and ultrasound pulse velocity of mineral. Nondestructive testing ultrasonic examination basic principles of sound propagation and reflection in materials basics of ultrasonic testing procedures ultrasonic testing of a steel. Ndt methods are very important components of inspection procedures of infrastructure objects. Application of the combined method for evaluating the. After traversing a known path length l in the concrete, the. Standard test method for laboratory determination of pulse velocities and ultrasonic elastic constants of rock1 this standard is issued under the. If the data about factors influencing pulse velocity as stated above is not available, then, the assessment of. The method is also useful for estimating crack depth and direction, and determining the thickness.
Ultrasonic testing procedure for concrete structure. Nondestructive testing of concrete methods of test. If you continue browsing the site, you agree to the use of cookies on this website. Introduction ultrasonic pulse velocity test is used to evaluate the material properties, to detect defects on the concrete structures. Detection of concrete damage using ultrasonic pulse velocity method s.
Ultrasonic pulse velocity upv measurements seem to be a quite effective way to perform quality control, since this reliable and flexible test method allows. Comparison between different methods of ultrasonic pulse. What is ultrasonic testing of concrete for compressive. This test is done to assess the quality of concrete by ultrasonic pulse velocity method as per. Ultrasonic pulse velocity method of non destructive test. Online full ut level i testing training our ut level i training is based on asnt and iso standards topical outlines. A pulse of longitudinal vibrations is produced by an electroacoustical transducer held in contact with one surface of the concrete under test. Some work in previous literature made use of the ultrasonic pulse velocity upv of concrete to. Apr, 2017 ultrasonic testing of concrete is an effective way for quality assessment and uniformity, and crack depth estimation.
Methods for the determination of longitudinal pulse velocity and assessment of concrete properties by ultrasonic pulse velocity, as recommended by standards of the uk, usa, germany, russia, slovakia, hungary, and rilem, are evaluated. Ultrasonic pulse velocity has been found to be a valuable and reliable method of detecting interior of concrete member in truly a non destructive way. Ultrasonic pulse velocity echo testing of concrete, rock, wood and ceramics with pundit pl200pe proceq ag. This test method rapidly and easily allows you to locate cracks, voids, rot and other areas of inhomgenity. Single or continuous acquisition mode with automatic or manual saving.
Ultrasonic tests ultrasonic pulse velocity upv method is particularly effective, powerful and flexible, allowing indepth analysis of material homogeneity. Knowing the distance between the two points, the velocity of the wave pulse can be determined. 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. Nondestructive test has been applied to measure damage in structures. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to know and speak the laws that govern them. Detection of concrete damage using ultrasonic pulse. Decrease of the ultrasonic pulse velocity in concrete caused by reinforcement 1019 active standard of american society for testing and materials astm c59709 standard test method for pulse velocity through concrete includes an explanation that the upv measured in the vicinity of the reinforcing steel will be higher than in plain.
The velocity of an ultrasonic pulse through a material is a function of the elastic modulus and concretenessdensity of the material. The ultrasonic equipment used in ultrasonic v inspection procedures described throughout this manual is listed in appendix b. Measurement of the required time by the ultrasonic pulse to go through the tested material. The method allows doing the tests at the same place, making possible a. A curve produced in this way relates only to concretes of identical composi tion, which are produced, cured, and tested in a similar way. Plug the shear wave velocity swave into the a1220 monolith, based on the measured pwave velocity. Ultra sonic pulse velocity test on a pier duration. Standard test method for pulse velocity through concrete. Procedure to determine strength of hardened concrete by ultrasonic pulse velocity. Reference blocks, instrument settings, and standardization instructions for the ultrasonic instrument are included in the individual ultrasonic inspection procedures. The concrete surface where probes are to be applied is cleaned properly. But first, lets see why concrete cracks, and why crack depth measurement in concrete matters. In this test method, the ultrasonic pulse is produced by the transducer which is held in contact with one surface of the concrete member under test.
Review of the ultrasonic pulse velocity evaluating. Use the a1220 monolith to measure thickness, locate inclusions, or detect flaws in the concrete. Ultrasonic velocity an overview sciencedirect topics. Proceq pundit offers the most versatile range of ultrasonic testing instruments that are ergonomic and portable. Correlation between pulse velocity and compressive. Before switching on the v meter, the transducers should be connected to the sockets marked tran and rec. Annexes to this standard provide information on the determination of pulse velocity, factors influencing pulse velocity measurements, and the correlation of pulse velocity and strength. Ultrasonic pulse velocity tester nondestructive concrete. Ultrasonic pulse velocity measurement, a nondestructive method, could be such a method. Santhanam department of civil engineering, iit madras, chennai600 036. Selection of the ultrasonic pulse amplitude adjustable from 250 to v. Guidebook on nondestructive testing of concrete structures. Grease is applied on the test surfaces the probes are pressed on the surface of the structural element to remove air gaps.
Insofar as we are primarily interested in the evaluation of the strength of concrete onsite. Ultrasonic pulse velocity is a nondestructive test of concrete pundit portable ultrasonic non destructive digital indicating tester is the instrument that used in ultrasonic pulse velocity test. Ultrasonic pulse velocity method ultrasonic pulse velocity this test is done to assess the quality of concrete by ultrasonic pulse velocity method as per is. Pdf ultrasonic pulse velocity in concrete using direct and. 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. Ultrasonic pulse velocity test procedure concrete test. Application of ultrasonic pulse velocity to detect concrete flaws. The elastic moduli are calculated from the velocity measurements. In addition to physical deterioration of the concrete structure is also access by upv test. What is ultrasonic testing of concrete for compressive strength.
Comparison between different methods of ultrasonic pulse velocity tests on concrete k. The pundit pl200 is a bestinclass ultrasonic pulse velocity upv test instrument to examine the quality of concrete and other materials such as rock, wood and ceramics. Comparatively higher velocity is obtained when concrete quality is good in terms of density, uniformity, homogeneity etc. Therefore, test results indicate that both methods can be used to assess the insitu properties of concrete or for quality control on site as soon as after the removal of formwork. To study the structural homogeneity analysis of a college building using the nondestructive testing methods i.
Ultrasonic pulse velocity tests capstone consultants. Upv method can be used for estimating the depth of surface cracks. Standard test method for laboratory determination of pulse. Ultrasonic test inspection free ndt sample procedures. Pundit pl200 pulse echo transducer ultrasonic testing. Direct calculation of the emodulus on the instrument measure p and swave velocities on the same screen dual cursor poissons ratio also calculated on pllink software area scan. Experimental study on ultrasonic pulse velocity evaluation of the. The ultrasonic pulse echo upe technology extends ultrasonic pulse velocity upv applications to objects where access is restricted to a single side. An ultrasonic pulse velocity test may help determine the modulus or strength of the material, and make sure that the concrete is still able to conform to specified regulations and standard requirements. Sep 20, 2014 ultrasonic pulse velocity test this test is done to assess the quality of concrete by ultrasonic pulse velocity method as per is. From references, there were a lot of linear ultrasonic testing procedures in concrete. 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. The method is based on the propagation of a high frequency sound wave which passes through the material.
The ultrasonic pulse velocity test 359 mean pulse velocity and mean strength obtained from each set of three nominally identical test specimens provide the data to construct the calibration curve. Ultrasonic pulse velocity in concrete using direct and. That is, they measure the velocity of the gas within the meter body. The pundit pl200pe employs stateoftheart pulse echo technology to extend the ultrasonic application to objects where access is restricted to a single side. Read time taken for the ultrasonic pulse from the instrument.
Keywords direct, indirect, semidirect, ultrasonic waves, velocity. From references, there were a lot of linear ultrasonic testing procedures in conc rete. Common structures are assessed with the use of practical and easy application of ultrasonic pulse velocity upv. By knowing the velocity and the crosssectional area, uncorrected volume can be computed. After a length l the pulse of vibrations is converted into an electrical signal by the second transducer, the timing circuit enables the transit time t of the pulse to be measured. Ultrasonic pulse velocity tester is used to measure the velocity of propagation of ultrasonic pulses through concrete. 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. Pundit ultrasonic pulse velocity and pulse echo tomography. Ultrasonic pulse velocity test is used to evaluate the material properties, to detect defects on. If the data about factors influencing pulse velocity as stated above is not available, then, the assessment of compressive strength will have limitations. Each section covers a specific subject, basic knowledge, 0degree scanning, angled scanning. The ultrasonic pulse velocity can be used to assess the quality and uniformity of the material. The method consists of measuring the time of travel of an ultrasonic pulse passing through the concrete being tested. Pundit pl200 pulse echo transducer ultrasonic pulse velocity upv test instrument to examine the quality of concrete to en125044, astm c 59702, bs 1881 part 203, iso19207. Ultrasonic pulse velocity in concrete using direct and indirect transmission by ismail ozgur yaman, gokhan inei, nazli yesiller, and haluk m. Aktan the relationship between velocities ofultrasonic stress waves trans mitted along direcr and indirect paths was investigated. Ultrasonic pulse velocity upv measurements seem to be a quite effective way to perform quality control, since this reliable and flexible test method allows an indepth analysis of the materials. Centre for innovative grouting materials and technology cigmat department of civil and environmental engineering university of houston, houston, tx, 772044003. May 31, 2017 different techniques have been developed and used over time for the purpose of crack depth measurement in concrete. Ultrasonic testing is now widely used throughout the world and it is clear that the advantages of this method over traditional methods of testing are likely to increase further its application.
Ultrasonic testing consists of measuring the travel time of an ultrasonic pulse or wave of 25 to 60 khz. Ultrasonic pulse velocity upv en 125044a rebound hardness test. Both compressive strength and upv are very low for all the levels of mineral admixture at an early age curing, especially for samples containing high volume fa. A crack is a linear fracture in concrete which extends partly or completely through the member. Because the velocity of the pulses is almost independent of the geometry of the material through which they pass and depends only on its elastic properties, pulse velocity method is a convenient technique for investigating structural concrete. A basic mode of the ultrasonic testing method is known as time of flight, and it pertains to timing the arrival of the ultrasonic pulse from. The method consists of measuring the time of travel of an ultrasonic pulse passing. Linear ultrasonic test using ultrasonic pulse velocity upv an.
The procedure of ultrasonic testing for the compressive strength of concrete. Ndt, ultrasonic pulse velocity test assessment, procedure and. Modified asr test astm c 1260 method with weight, volume changes and ultrasonic pulse velocity siva vinay moturi and c. The pundit lab is an ultrasonic pulse velocity upv test instrument which is used to examine the quality of concrete. 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. To check the quality and strength of insitu concrete in structural members, ultrasonic pulse velocity test is most recommended. The transit time t12 of an ultrasonic signal traveling with. June 2015 an ultrasonic pulse velocity upv test is an insitu, nondestructive test to check the quality of concrete and natural rocks.