IS 13311 PDF
Bhartṛhari—Nītiśatakam. “Knowledge is such a treasure which cannot be stolen” . IS (): Method of non-destructive testing of concret-methods of. “Knowledge is such a treasure which cannot be stolen”. IS (): Method of Non-destructive testing of concret, Part 1: Ultrasonic pulse velocity [ CED 2. IS Part 1 - Download as PDF File .pdf), Text File .txt) or read online. is
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Methods of non-destructive testing of concrete Part 2 Rebound hammer _2 .pdf. Copyright: Download as PDF, TXT or read online from Scribd. Flag for. Rebound Hammer (IS (Part 2): ). ▻ The rebound hammer method could be used for: i) Assessing the likely compressive strength of concrete. IS (Part 1): Indian Standard. NON-DESTRUCTIVE TESTING OF CONCRETE —. METHODS OF TEST. PART 1 ULTRASONIC PULSE VELOCITY.
Army Headquarters. Hospital Services Consultancy Ministry of Transport. Rustom Baug. Lucknow Engineers Indian India Limited. New Delhi Public Works Department. Calcutta India Works Rcpr6srnfing Limited. New Delhi Institute of Technology. Bombay India Limited. CED 2: Foundation Organization.
Bombay Government of Tamilnadu Part 2: Wardha Road. Bombay Services. Ministry of Railways. New Delhi. Nagpur Research Designs and Standards Organization. New Delhi Limited.
Bombay Research Institute. Research and Bombay Building Materials. Madras Central Public Works Department. Victoria Road. Ghaziabad A. Bombay Materials. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.
Continued from second cover situations. If the nominal grades of concrete or mix proportions are known to be different in either case. The composition at Annex A. Manak Bhavan. No part of these publications may be reproduced in any form without the prior permission in writing of BIS.
SC0 IV Cross Road. E9 MIDC. This does not preclude the free use. Enquiries relating to copyright be addressed to the Director Publications. New Delhi Telephones: Review of Indian Standards Amendments are issued to standards as the need arises on the basis of comments. This Indian Standard has been developed from Dot: Printed at Printograph. Standards are also reviewed periodically.
Scheme VII M. Copyright BIS has the copyright of all its publications. Flag for inappropriate content. Related titles. Jump to Page. Search inside document. Ramarraju Kalidindi. Bayron Medina Ospina. Manvendra Nigam. AhmadShayuti ar. Tabish Islam. Arup Guha Niyogi. Bombay Cement Corporation of India.
New Delhi Smu Y. Nagpur 15 6. New Delhi Road. Rustom Barcg. Ministry Engineers India Limited. New Delhi Public Works Department. SHRI S. SHRI N. Bombay Ministry of Transport Roads Wing.
Public Safety Standards of the Republic of India
Army Headquarters. Lucknow SHm K. Bombay Central Road Research Institute. The composition of the technical given in Annex A. The test results on ultrasonic pulse velocity and rebound indices -are analysed statistically and plotted as histograms and the lower fractiles of results are taken for assessing the. The number of-significant places retained in the rounded off value should be the same as that of the specified value in this standard.
If the nominal grades of concrete or mix proportions are known to be different in either case. Continued from second Cover In-most of the situations. In doing so. Standards are also reviewed periodically. Sector A. New Delhi-l Enquiries relating to copyright be addressed to the Director Publications. Manaksanstha Common to all offices Telephone Regional Offices: Manak Bhavan. This Indian Standard has been developed from Dot: Review of Indian Standards Amendments are issued to standards as the need arises on the basis of comments.
Scheme VII M. E9 MIDC. New Delhi Telephones: Maniktola 1 84 86 Printed at Dee Kay Printers. This does not preclude the free use. SC0 IV Cross Road. No part of these publications may be reproduced in any form without the prior permission in writing of BIS. Copyright BIS has the copyright of all its publications. IS Part 1 Uploaded by j4jooy. Flag for inappropriate content. Related titles.
IS_13311_Part 1__1992__Non destructive test ulta sonic.pdf...
Efficiency of Ultrasonic pulse velocitytest in life of concrete structure. Jump to Page. Search inside document. Anonymous YHcvra8Xw6. Nitin S Jog. Devela Avinash.
L V Laxmipathi Rao. Tayyab Anwar. Bayron Medina Ospina. Rohit Khandelwal. Sravan Kumar. Ajit Pratap Singh. Rabab M Aly. IJAR Journal. Yassine Bahter. Shahab Sadqpur. P Allen Samuel Ignatius. Arisan Iqma. Ryan Wiratama. Rocks Kiran. More From j4jooy. Gehlot3, Akash Gupta4 1 M. 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.
The pulse velocity in a material depends on its density and its elastic properties which in turn are related to the quality and the compressive strength of the concrete.
IS 13311-2: Method of non-destructive testing of concret-methods of test, Part 2: Rebound hammer
It is therefore possible to obtain information about the properties of components by sonic investigations. The investigation reported here is to present study of calibration graphs for Non Destructive Testing NDT Equipment, which is ultra sonic pulse velocity test and to study the quality of the concrete in existing structures.
These ultra sonic pulse velocity tests were then used to test the quality of the concrete of the various structural elements columns and beams of single storied newly under constructed office building. The use of this method produces results that lie close to the true values when compared with other methods. A correlation between ultra sonic pulse velocity test and strength of concrete structure is established, which can be used for strength estimation of concrete structures. The method can be extended to test existing structures by taking direct measurements on concrete elements.
Introduction To keep a high level of structural safety, durability and performance of the infrastructure in each country, an efficient system for early and regular structural assessment is urgently required.
The quality assurance during and after the construction of new structures and after reconstruction processes and the characterization of material properties and damage as a function of time and environmental influences is more and more becoming a serious concern. In recent years, innovative NDT methods, which can be used for the assessment of existing structures, have become available for concrete structures, but are still not established for regular inspections.
Ultrasonic Pulse Velocity Method
Therefore, the objective of this investigation is to study the applicability, performance, availability, complexity and restrictions of NDT. The purpose of establishing standard procedures for non destructive testing NDT of concrete structures is to qualify and quantify the material properties of in-situ concrete without intrusively examining the material properties.
There are many techniques that are currently being research for the NDT of materials today. Present work focuses on the NDT methods relevant for the inspection and monitoring of concrete quality. The NDT being fast, easy to use at site and relatively less expensive can be used for testing any number of points and locations it can assess the structure for various distressed conditions like damage due to fire, chemical attack, impact age. It is also helpful in detecting cracks, voids, fractures, honeycombs, weak location and actual condition of reinforcement.
The use of the ultrasonic pulse velocity test is introduced as a tool to monitor basic initial cracking of concrete structures and hence to introduce a threshold limit for possible failure of the structures. Experiments using ultrasonic pulse velocity tester have been carried out, under laboratory conditions, on various concrete specimens and the reference results have been used for the evaluation of the concrete quality of the existing structure Office Building.
Test Methodlogy Ultrasonic instrument is a handy, battery operated and portable instrument used for assessing elastic properties or concrete quality. The apparatus for ultrasonic pulse velocity measurement consists of the Electrical pulse generator, Transducer one pair , Amplifier and Electronic timing device.
The ultrasonic pulse velocity method could be used to establish homogeneity of the concrete; it can check presence of cracks, voids and other imperfections which is helpful to find values of dynamic elastic modulus of the concrete. USPV is useful to check quality of concrete in relation to standard requirement and relation to another structure.
DOI: Comparatively higher velocity is obtained when concrete quality is good in terms of density, uniformity, homogeneity etc. The ultrasonic pulse is generated by an electro acoustical transducer. When the pulse is induced into the concrete from a transducer, it undergoes multiple reflections at the boundaries of the different material phases within the concrete.
A complex system of stress waves is developed which includes longitudinal compression , shear transverse and surface Rayleigh waves. The receiving transducer detects the onset of longitudinal waves which is the fastest. 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. For good quality concrete, pulse velocity will be higher and for poor quality it will be less. If there is a crack, void or flaw inside the concrete which comes in the way of transmission of the pulses, the pulse strength is attenuated and it passed around the discontinuity, thereby making the path length longer.
Consequently, lower velocities are obtained.
The actual pulse velocity obtained depends primarily upon the materials and mix proportions of concrete. On the other hand, it has been shown that the strength of concrete and its modulus of elasticity are related. The method starts with the determination of the time required for a pulse of vibrations at an ultrasonic frequency to travel through concrete. Once the velocity is determined, an idea about quality, uniformity, condition and strength of the concrete tested can be attained.
In the test, the time the pulses take to travel through concrete is recorded. Various factors which can influence pulse velocity and its correlation with various physical properties of concrete are as follow: 2.
The moisture content has chemical and physical effects on the pulse velocity. These effects are important to establish the correlation for the estimation of concrete strength. There may be significant difference in pulse velocity between a properly cured standard cube and a structural element made from the same concrete.
Corrections to pulse velocity measurements should be made for temperatures outside this range, as given in table 1. The path length the distance between two transducers should be long enough not to be significantly influenced by the heterogeneous nature of the concrete. It is recommended that the minimum path length should be mm for concrete with 20 mm or less nominal maximum size of aggregate and mm for concrete with 20 mm and 40 mm nominal maximum size of aggregate.
The pulse velocity in reinforced concrete in vicinity of rebars is usually higher than in plain concrete of the same composition because the pulse velocity in steel is almost twice to that in plain concrete.Use is.
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The various methods that can be adopted for in-situ assessnhent of strength properties of concrete depend upon the particular aspect of strength in question.
The compressive strength went on decreasing as we go up towards the roof. IS Part 2: The quality assurance during and after the construction of new structures and after reconstruction processes and the characterization of material properties and damage as a function of time and environmental influences is more and more becoming a serious concern.