An ultrasonic testing procedure was developed to evaluate geomembranes. Utc3034 ultrasonic pulse velocity tester is a microprocessor incorporated equipment which can be connected to a pc through the rs 232 output. What is ultrasonic testing of concrete for compressive strength. The ultrasonic equipment used in ultrasonic v inspection procedures described throughout this manual is listed in appendix b. Ultrasonic pulse velocity test ndt on hardened concrete by by. The transparency measurements figure 3and 4 of longitudinal sound waves through a member. The method consists of measuring the time of travel of an ultrasonic pulse passing through the concrete being tested.
The velocity of an ultrasonic pulse through a material is a function of the elastic modulus and concretenessdensity of the material. Pdf ultrasonic pulse velocity analysis in concrete specimens. The ultrasonic pulse velocity can be used to assess the quality and uniformity of the material. Linear ultrasonic test using ultrasonic pulse velocity upv and rebound hammer was introduced. Influence of test conditions the pulse velocity in concrete may be influenced by any or all of the following. Ultrasonic pulse velocity method civil engineering. Single or continuous acquisition mode with automatic or manual saving. 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.
Pundit ultrasonic pulse velocity, ultrasonic pulse echo. The velocity of a pulse of ultrasonic energy in concrete is influenced by the elastic stiffness and mechanical strength of the concrete. Compressive strength determines the compressive strength using ultrasonic pulse velocity correlation, or by using sonreb. The apparatus for ultrasonic pulse velocity measurement consists of the following. The pulse is generated by a transmitter and received by a receiver. Ultrasonic tests ultrasonic pulse velocity upv method is particularly effective, powerful and flexible, allowing indepth analysis of material homogeneity. Selection of the ultrasonic pulse amplitude adjustable from 250 to v. Ultrasonic pulse velocity test of concrete properties as. If the weld is not ground flushed the probe shall be controlled such that it faces nearly parallel to the weld body.
Here we are focusing on ultrasonic pulse velocity test upv. For testing, smooth, clean and dry surface is to be selected. 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. Jan 01, 2018 the method consists of measuring the time of travel of an ultrasonic pulse passing through the concrete being tested. The search unit shall be manipulated so that the ultrasonic energy passes through the required. 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 procedure defines the criteria and general requirements to carry out ultrasonic examination on ferritic welded joints. Compressive strength formula for concrete using ultrasonic. An ultrasonic pulse velocity upv test is an insitu, nondestructive test to check the quality of concrete and natural rocks. Ultrasonic pulse velocity upv and rebound hammer rh tests are often used for. Pdf ultrasonic pulse velocity in concrete using direct.
Evaluation of engineering properties of rock using. Pundit pd8000, the wireless inspection solution with multichannel ultrasonic pulse echo technology, brings onsite structural concrete. It is possible to determine concrete uniformity, to control its quality, to follow up the deterioration, to check the presence of. Pulseecho and through transmission relates to whether reflected or transmitted energy is used. Ultrasonic pulse velocity test procedure concrete test. Ultrasonic inspection techniques are commonly divided into three primary classifications. 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. Measurement of the required time by the ultrasonic pulse to go through the tested material. The transmitter and receiver are placed on the two opposite faces of the element to test. If loosely adhering scale is present,this should be rubbed of with.
Ultrasonic pulse velocity testing, mainly used to measure the sound velocity of the. Application of ultrasonic pulse velocity to detect. Ndt methods are very important components of inspection procedures of infrastructure objects. A typical procedure can be found in the corresponding speci. This method is not so authentic to determine the qualitystrength of concrete. The method is also useful for estimating crack depth and direction, and determining the thickness. Ultrasonic pulse velocity tester utest malzeme test cihazlar. It can also be connected to an oscilloscope and can perform transit time measurement from 0. Pulse velocity is estimated in concrete with the arrangement of transducers in planes perpendicular to each other. Comparison between different methods of ultrasonic pulse. In this study, pulse velocities calculated from the time taken by pulses emitted by a transducer to traverse a known thickness of the concrete is utilized in building up a correlation between pulse velocity and strength of concrete cubes and between pulse velocity and age of concrete.
Pdf ultrasonic pulse velocity in concrete using direct and. In addition to physical deterioration of the concrete structure is also access by upv test. Note in view of the limitations of each method of nondestructive testing of concrete, it is essen. To assess the quality of concrete by ultrasonic pulse velocity method as per is. 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. Ultrasonic pulse velocity for in situ measurement of. Ultrasonic pulse velocity tester at best price in india. 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. Nondestructive testing of concrete methods of test. Ultrasonic pulse velocity tester utest malzeme test. 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. Pundit pl200 pulse echo transducer ultrasonic testing.
Astm c597 16 standard test method for pulse velocity. What is ultrasonic testing of concrete for compressive. Reference blocks, instrument settings, and standardization instructions for the ultrasonic instrument are included in. Feb 02, 20 ultrasonic pulse velocity test it measures the time of travel of an ultrasonic pulse passing through the concrete. Keywords direct, indirect, semidirect, ultrasonic waves, velocity. The battery operated equipment has a transmitter output of 800 v. Ultrasonic pulse velocity in concrete using direct and indirect transmission. 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. Sensor and dimensions effects in ultrasonic pulse velocity. The quality of the concrete in relation to standard. Ultrasonic pulse velocity test it measures the time of travel of an ultrasonic pulse passing through the concrete. Crack depth determines the depth of perpendicular cracks according to bs 1881. The ultrasonic pulse velocity method could be used to establish. Pulse velocity measurement crack depth measurement.
Assessment of strength properties of cemented paste. Apr, 2017 ultrasonic testing of concrete is an effective way for quality assessment and uniformity, and crack depth estimation. 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. Non destructive testing of structures linkedin slideshare. Ultrasonic testing of concrete fprimec solutions inc. Pulse velocity calculates the pulse velocity of the material under test. 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 test inspection free ndt sample procedures. 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. Changes in the structure of the concrete which may occur with time, 4. The maximum compressive strength and ultrasonic pulse velocity upv have been observed with the samples containing bfs. This mathematical relationship was derived from the test results of more than 700 test samples. Introduction ultrasonic pulse velocity test is used to evaluate the material properties, to detect defects on the concrete structures. It is the most widely used method because there is maximum pulse energy which is transmitted and received so this is. Reference blocks, instrument settings, and standardization instructions for the ultrasonic instrument are included in the individual ultrasonic inspection procedures. Ultrasonic pulse velocity upv test instrument to examine the quality of concrete to en125044, astm c 59702, bs 1881 part 203, iso19207. Review of the ultrasonic pulse velocity evaluating. Comparatively higher velocity is obtained when concrete quality is good in terms of density, uniformity, homogeneity etc. Ultrasonic pulse velocity test this test is done to assess the quality of concrete by ultrasonic pulse velocity method as per is. If the data about factors influencing pulse velocity as stated above is not available, then, the assessment of compressive strength will have limitations. Compressive strength and ultrasound pulse velocity of.
The test procedure has been standardized as standard test method for pulse velocity through concrete astm c 597, 2016. Ultrasonic testing is a very versatile inspection method, and inspections can be accomplished in a number of different ways. 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. 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 has been found to be a valuable and reliable method of detecting interior of concrete member in truly a non destructive way. Guidebook on nondestructive testing of concrete structures. Three different arrangements of transmitters and receivers were studied to cover the. The ndt methods are used in a great amount of researches. The presence of cracks,voids and other imperfections, 3. The equipment consists of two transducers, usually in the form of metal cylindrical heads, one of which is used to. Assessment of strength properties of cemented paste backfill. Surface velocity determines surface velocity according to bs 1881. Ultrasonic pulse velocity analysis in concrete specimens.
Zero calibration with depuration of the time for the pulse to go through the probes. Evaluation of engineering properties of rock using ultrasonic. 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. If the data about factors influencing pulse velocity as stated above is not available, then, the assessment of compressive strength will. Ultrasonic pulse velocity upv test, a nondestructive and easy method to apply in both field and laboratory conditions, is increasingly being used to determine the geotechnical properties of rock or concrete materials in mining, civil and geotechnical engineering. In addition, influence of test conditions and some general guidance on the interpretation of test results are also given. Nondestructive material testing with ultrasonics introduction to the basic principles. A test procedure, described in bs 1881 to determine indirect wave.
The pundit 250 array is a modular phased array pulse echo instrument incorporating drypoint contact transducers. In this method, the time required to travel of an ultrasonic pulse passing through the concrete is measured. Get info of suppliers, manufacturers, exporters, traders of ultrasonic pulse velocity tester for buying in india. The pundit pl200pe employs stateoftheart pulse echo technology to extend the ultrasonic application to objects where access is restricted to a single side. May 20 nondestructive testing of concrete methods of test ultrasonic pulse velocity. This test is done to assess the quality of concrete by ultrasonic pulse velocity method as per is. The variation between the measured transit times of single test specimens should be within % of the mean value of the three measurements. Method of nondestructive testing of concret, part 1. It features unique real time bscans as well as onsite cscans, pscans and volume scans. Ultrasonic pulse velocity tester supports the following standards. Pulse velocity in concrete will be demonstrated with.
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. Review of the ultrasonic pulse velocity evaluating concrete. Akshay r manohar 1 sem mtechconstruction technology civil engineering dept. In addition to physical deterioration of the concrete structure is. Find here online price details of companies selling ultrasonic pulse velocity tester. 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. Application of ultrasonic pulse velocity techniques for. Test report cur 69 of the tno the netherlands describes the method with which the concrete strength can be calculated using a combination of the rebound value of a schmidt hammer type n and the pulse velocity. Knowing the distance between the two points, the velocity of the wave pulse can be determined.
495 1413 480 426 319 1100 97 1257 1201 1087 1324 1639 557 484 480 141 1131 302 564 800 941 1645 1195 694 1183 375 220 353 581 1482 875 925 99 580