Recommendations for the assessment of concrete strength by neartosurface tests, british standards. Bs 70 1979 specification for low heat portland cement. Specification for compression testing machines for concrete bs 1881 105. Bs 1881202 1986 testing concrete part 202 recommendations. Recommendations for surface hardness testing by rebound hammer from the open bs standard webstore. Part 202 4 suggests that the estimation by means of ultrasonic pulse velocity or any measured number is an indication of about the first 30mm other. Recommendations for surface hardness testing by rebound hammer bs 1881 115. Download bs codes page 3 of 4 civil engineering community. Guide to the use of nondestructive methods of test for hardened concrete. With the direct method, in the laboratory, this test shows a coefficient of variation of about 22. Pull off test to evaluate the compressive strength of.
Bs 1881 testing concrete civil engineering community. To view the content of other pages click on the transfer page icon. Recommendations on the use of electromagnetic covermeters. Pdf concrete strength by combined nondestructive methods.
All bsi british standards available online in electronic and print formats. Humboldts concrete rebound hammer provides a reliable, yet economical, alternative to the original schmidt hammer. Please first verify your email before subscribing to alerts your alert profile lists the documents that will be monitored. Home shop products tagged bs 1881 part 203 bs 1881 part 203. The amount of readings in each slab was defined by recommendations of bs 1881.
Data collection and processing of test results comply with industry standards such as astm c805 en 125042 bs 1881 part 202 din 1048, part 2 a 83. Recommendations for surface hardness testing by rebound hammer. Concrete defects inspection and diagnosis springerlink. Download bs codes page 2 of 4 civil engineering community. Recommendations on the use of electromagnetic covermeters british standard description of types, applications, calibration, methods of use to measure cover and bar size. Operational system of a schmidt rebound hammer srh. Portable nondestructive concrete testing instruments proceq. Enter your mobile number or email address below and well send you a link to download the free kindle. Concrete, by nature, is a nonuniform, nonisotropic structural material consisting of aggregate particles, air voids and moisture distributed heterogeneously in a hardened matrix. Carbonation is the result of the interaction of carbon dioxide gas in the atmosphere with the alkaline hydroxides in the concrete. Find the most uptodate version of bs 1881202 at engineering360. Recommendations for surface hardness testing by rebound hammer from. Recommendations on the use of electromagnetic covermeters british standard description of types, applications, calibration, methods of use.
Labline rebound hammer at rs 9800 unit schmidt hammer. It features online data acquisition, waveform analysis and full remote control of all transmission parameters. Download scientific diagram operational system of a schmidt rebound. Our policy towards the use of cookies techstreet, a clarivate analytics brand, uses cookies to improve your online experience. Download bs standard, bs codes, bsi publications which published by british standards institution for free page 3 of 4. Review of the rebound hammer method estimating concrete. This part of bs 1881 is a technical revision superseding bs 1881122. Method for making test cubes from fresh concrete bs 1881. Where carried out on oven dried concrete, the results are reasonably comparable between materials. Specification for compression testing machines for concrete bs 1881105. Introduction used to measure the thickness of concrete cover over steel reinforcement bars and metal pipes, furthermore it is also used to identify the location, orientation and diameter of reinforcement bars rebar. If the document is revised or amended, you will be notified by email. Diffusion constant is determined by the concrete quality. Recommendations for surface hardness testing by rebound hammer inactive buy now.
If the link fails, the document cannot be downloaded, please click on the broken link to let us know. This does not preclude the free use, in the course of. Revised cpwd specifications, 2002 for cement mortar, cement concrete and rcc works. Sep 20, 2018 data collection and processing of test results comply with industry standards such as astm c805 en 125042 bs 1881 part 202 din 1048, part 2 a 83. Pundit lab ultrasonic concrete tester introduction the pundit lab is an ultrasonic pulse velocity upv test instrument which is used to examine the quality of concrete. Quantification of benefits of steel fiber reinforcement for rigid pavement. Isat initial surface absorption test introduction the isat test specified in bs 1881 part 5 was originally developed as a laboratory method of measuring the porosity of concrete. Recommendations for measurement of velocity of ultrasonic. Part 202, isoidis8045, env 206, igjt 232001 the original schmidt hammer, type n, is designed for nondestructive testing of concrete items 4 100mm or more in thickness, or concrete with a maximum particle size less than or equal to 1. The silverschmidt features quicker and more accurate testing while addressing the previous insufficiencies of the traditional hammers.
In 1954 proceq sa was founded and has been producing the original schmidt rebound hammers since then, without any. Download bs standard, bs codes, bsi publications which published by british standards institution for free. Isat initial surface absorption test introduction the isat test specified in bs 1881 part 5 was originally developed as a laboratory method of measuring the porosity of concrete where carried out on oven dried concrete, the results are reasonably comparable between materials. Carbonation free download as powerpoint presentation. Pull off test to evaluate the compressive strength of concrete.
Recommendations for surface hardness testing by rebound hammer bs 1881115. Determination of water absorption of concrete specimens cored from a structure or precast component. The carbonation rate is a function of concrete cover over reinforcing steel, time and diffusion constant. Paving block strength bs 6717 part 1 precast concrete paving blocks strength initial surface absorption bs 1881 208 determination of the initial surface absorption of concrete. Scribd is the worlds largest social reading and publishing site. Part 3 for the end prepared first with respect to the axis of the specimen as datum axis shall be 2. Types of rebound hammers several hundred thousands of schmidt rebound hammers are in uses worldwide baumann, 2006.
It is designed for testing concrete 4 100mm or more in thickness with a maximum particle size less than or equal to 1. Dec 03, 2003 british standard bsi summary and reference. Nondestructive testing of concrete by rebound hammer. Bs 85001 bs 85002 bs en 2061 bs en 123901 bs en 123902 bs en 123907 bs en 125041 bs en 12350 bs en 12390 bs en 12504 bs iso 57252 all current amendments available at time of purchase are included with the purchase of this document. Another factor in the sizing of the slabs is the recommendation from the standard that discs should be set at a minimum of two diameters to each other and positioned at a distance of a diameter from the edges of the element to be tested. Download bs standard, bs codes, bsi publications which published by british standards institution for free page 2 of 4. Materials and components, design and workmanship sampling, treatment of samples and tests for cement type and content, aggregate type, content and grading, original water content, chloride, alkali and sulphate contents. Part 2021986, recommendations for surface hardness testing by rebound hammer. The proceq silverschmidt test hammer has been redesigned to provide unmatched accuracy, repeatability and easy, intuitive operation. Method for determination of compressive strength of concrete. All bsi british standards are available online in pdf or hardcopy. Bs 1881202 february 28, 1986 testing concrete part 202. Recommendations for measurement of velocity of ultrasonic pulses in concrete udc 666. Free download bs 1881 pdf standard from public digital library.
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