Concrete society, concrete core testing for strength, technical report no. Permissible limits on properties ii and iv in freemovement areas. Design guidance for stengthening concrete structures. Concrete society report tr34 concrete industrial ground floors third edition 2003 important errata notification would you please amend your copy of tr34 to correct the following. There are serious considerations for effects of rebar on compressive strength of concrete cores in some countries. Responsibility for drafting the report was undertaken jointly by halcrow group, the concrete society and university college london. Pdf distributions of compressive strength obtained from various. Section 4 surface regularity free movement table 4. The first and second editions of concrete society technical report 34 1988, 1994 relied on tr550 for design of fabricreinforced groundbearing slabs but the third edition introduced a new, completely different design method. Anchorage zone reinforcement for posttensioned concrete girders john edward breen, american association of state highway and transportation officials, united states.
Tr22 nonstructural cracks in concrete the concrete society. It has been the subject of much debate among members of the society s materials standing committee as to its efficacy, particularly in. Smd provides noteworthy contribution as part of the editing group involved with producing the newly publicised concrete society technical report no. Anchorage zone reinforcement for posttensioned concrete. Again this method does not account for environmentally induced stresses in the pavement from warping, curling and thermal expansion. The illustrations are based upon a range of call scenarios. Formerly known as the cement and concrete association, the british cement association is the trade. There is only an concrete society equation in publication no. For more than 30 years, the concrete society has been publishing technical reports and advice notes to serve the needs of clients, architects, engineers, specifiers, suppliers, contractors and users of. Concrete society technical reports can be purchased from our bookshop, members are entitled to 40% discount. The aim of this paper is to briefly describe the mechanics of producing the report and summarise its scope and salient features. This article provides information on how to scheme a pt slab and how the use of posttensioning affects the rest of the structure. Core test is commonly required in the area of concrete industry to evaluate the. For more than 30 years, the concrete society has been publishing technical reports and advice notes to serve the needs of clients, architects, engineers.
Guidance on assessment is given in concrete society technical report 68, assessment, design and repair of firedamaged concrete structures. Compressive strength of concrete cores with different. The concretebookshop is the leading source of publications in the concrete sector, on this site you will also find publications published by riba, ice, mpa concrete centre. Introduction to concrete portland cement association. Concrete society technical report 34 pdf posted on 11 252017 22. The way you would write an essay or a piece of fiction is completely different from how you should write a technical report. This bulletin n 31 was approved as an fib technical report in march 2004 by fib task group 1. For further magazine articles please try using our magazine article search. Tr 11 concrete core testing for strength withdrawn publication year 1987.
A very comprehensive document on this subject is the british concrete society s tech. Concrete is a composite material composed of coarse aggregate bonded together with a fluid cement that hardens over time. Description download tr 43 posttensioned concrete floorsdesign handbook free in pdf format. For further magazine articles please try using our magazine article search please login here to gain access to the technical report amendments. Dreams to reality panel discussion architecture in concrete. Durable posttensioned concrete structures tr72 concrete. Fabricreinforced concrete ground slabs and concrete society. Slabthicknesscalculatortr 66 tr66 technical report 66. Tr 11 concrete core testing for strength withdrawn. Design of groundsupported concrete industrial floor slabs interim technical note 11.
Produced by the concrete society on behalf of the cement and concrete industry publications forum. It is performed in the laboratory by experienced concrete. Design of groundsupported concrete industrial floor slabs. With the purchase of our 03 concrete and 04 masonry catalogs we can not only do the takeoff for the concrete systems, but we can. Concrete society assessment, design and repair of firedamaged. Fabricreinforced concrete ground slabs and concrete society technical report tr34 3alasdair n beal, thomasons. Pdf in 2003, the third edition of concrete society technical report 34 1 was published. Reliability of core test critical assessment and proposed new.
Pdf fabricreinforced concrete ground slabs and concrete. Concrete structures today will vary in different socioeconomic locations in the world. Technical report tr68 scenarios for computer supported telecommunications applications csta phase ii december 1994 the intention of this technical report is to illustrate how the services offered by csta phase ii are intended to be used by application developers and switch manufacturers. Its role is not only to incorporate latest research fruits but to publish an innovative and competitive performancebased limit state design method for steel and steelconcrete composite structures of the next generation. Supersedes tr 33 assessment and repair of firedamaged concrete structures concrete society, 1990, which superseded tr 15 assessment of firedamaged concrete structures and repair by gunite concrete society, 1978. There are a number of onsite and laboratorybased techniques available to aid in the diagnosis of reinforced concrete condition. The american concrete institute is a leading authority and resource worldwide for the development, distribution, and adoption of consensusbased standards, technical resources, educational and training programs, and certification programs related to concrete design, construction, and materials. The gateway to up to date information on integrated whole.
The concrete society scotland concrete industrial ground floors the new guidance an introduction to the 4th edition of concrete society technical report 34 afternoon seminar thursday 12th june 2014 venue. For these reasons, a visual inspection is usually supplemented by one or more of the other ndt methods, such as by concrete test hammer, ultrasonic concrete tester and partial destructive testing by drilling cores and testing them for compressive strength. Concrete society concrete testing for strength technical report 11. This is done by a disposable tubular plastic sleeve inserted into freshly placed concrete, or by drilling if existing concrete is to be tested. Operating instructions concrete test hammer nl nrnl manual. Concrete technical reports of earlier reporting periods are available on request. The route to a successful concrete repair cra electrochemical repair technical notes 1 to 12 the corrosion prevention association concrete society technical report 36 cathodic protection of reinforced concrete concrete society technical report 37 model specification for cathodic protection of reinforced concrete. Technical information the report complies with the eurocodes and is the industry standard for concrete floors in the uk. Society issued advice note 43 11 in 20 which summarises some of the. The resulting design guidance, technical report no. Concrete basicsaddresses the needs of unskilled and semiskilled persons undertaking general concreting projects including home and handyman projects. Complete calculation of concrete mix design is included with solved numerical equations.
The approach proposed by concrete society cs 23 is similar to that. A more detailed guide to the design of pt floors can be found in the concrete society s technical report 43 tr43. The concrete society s tr34 free movement 4th edition classifications. Normal strength concrete mix design technical report. Tr 64 guide to the design and construction of reinforced.
Joao almeida convener, instituto superior tecnico, portugal. Nonstructural cracks in concrete, technical report no. Where manual labour is economically available, concrete structures can be formed to take on. The concrete societys tr34 free movement 4th edition classifications. Technical publication amendments these are free to all members of the society. Posttensioning in buildings technical report prepared by task group 1. Slabthicknesscalculator tr 66 tr66 technical report 66 external insitu concrete paving 2007. Pdf tr 43 posttensioned concrete floorsdesign handbook. Concrete basicsalso assists owner builders in the supervision of construction. It brought together guidance for all types of industrial ground slab in one publication and also introduced a new design method for fabricreinforced groundbearing slabs. Tr 68 assessment, design and repair of firedamaged. The major result of this study and report was the development of a basic formula establishing.
This master thesis is the result of my studies at kth, royal institute of technology of. Property ii limit mm property iv limit mm floor classification floor use. The concrete society scotland concrete industrial ground. For more than 30 years, the concrete society has been publishing technical reports and advice notes to serve the needs of clients, architects, engineers, specifiers, suppliers, contractors and users of concrete. Concrete society technical report 34 design spreadsheet. A very comprehensive document on this subject is the british concrete societys tech. Riverside house 4 meadows business park station approach blackwater camberley gu17 9ab uk. Printed copies of older anthologies can be ordered at the betonshop. Concrete building systemsframe special subject areas damagedeteriorationcorrosion publisher history. Concrete practice sheets these are published by the concrete society in concrete.
Compressive strength tests were conducted on 300 core. Fabricreinforced concrete ground slabs and concrete. The concrete societys tr34 free movement 4th edition. The concrete society technical report 11 tr 11 concrete core testing for strength 1976, amended 1987, has been withdrawn as it has been superseded by british and european standards. Tr 11 concrete core testing for strength withdrawn, concrete. It brought together guidance for all types of industrial ground slab in one publication and also.
Below is a list of our published material all of these reports may be purchased from our bookshop by clicking on its title. Introduction to concrete concretess versatility, durability, sustainability, and economy have made it the worldss most widely used construction material. Assessment of concrete strength in existing structures using. An update and background to concrete society report tr47 second edition 26 june 2002 gordon clark.
Posttensioned pt concrete floors are now widely used in the uk, particularly for highrise buildings. There is no strength correction for the effect of rebars in aci and also in iranian related codes and specifications. Petrographic examination see separate entry petrographic tests and concrete society technical report 71, concrete petrography. Hilton treetops, 161 springfield road, aberdeen, ab15 7aq the newly published 4 th edition of tr34 supersedes the 3 rd published in. The design of concrete groundsupported concrete industrial floor slabs.
Tr 64 guide to the design and construction of reinforced concrete flat slabs publication year 2007 document status. The report explains the meaning of porosity, permeability, diffusion and the various coefficients and units that are used. Determination of shrinkage crack risks in industrial concrete. Permissible limits on properties ii and iv in free. Cores with diameters of 74 mm and lengthtodiameter ld ratios of 0. Concrete society technical report 11 tr 11 concrete core testing for strength. Special reference will be made to concrete society technical report 22 nonstructural cracks in concrete. The society are neither responsible for the opinions nor statements expressed by the authors. This report was initiated by a concrete laboratory report brief given out by professor mark alexander in the civ5002z. For starters, the main purpose of this type of writing is to create an indepth view of technical work that has been conducted. Oct 02, 2015 the report is being made on the experience of 3 weeks office training. Set in the context of limit state philosophy, the report provides design guidance on flexural strengthening of beams and slabs, shear strengthening of. Go team is capable of performing takeoff for concrete work including, foundations, retaining walls, columns, beams, slab on grade and elevated slab. Both jamie turner smd technical director and jim harbut smd concrete manager were heavily involved in the working group who contributed to the content and development of this document.
Ucl discovery is ucls open access repository, showcasing and providing access to ucl research outputs from all ucl disciplines. Technical report 34, 3rd edition, the concrete society, camberley, 2003. Concrete society technical report 34 concrete industrial ground. Develops the design methods in technical report 550 design of floors on ground. Founded in 1904 and headquartered in farmington hills, michigan, usa, the american concrete institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensusbased standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design.
A revised guidance document has recently been issued by the concrete society covering good practice for pouring concrete on upper floor steel decking. In general, it finds that cores can have a strength of 60% to 90% of the specified strength. Experimental study of core diameter varing hd ratio on. Tr 67 movement, restraint and cracking in concrete. Tr 11 was published in 1976 and updated by an addendum in 1987. An update and background to concrete society report. Historically, concrete society technical report 11 cstr 11, concrete core testing for strength, was used in the uk to interpret core strength results but it is no longer regarded as best practice and is superseded in part by bs en 791. Ha lifted the ban on internal posttensioninggpp g except precast segmental. Fabricreinforced concrete ground slabs and concrete society technical report tr343alasdair n beal, thomasons. The concrete society technical report 34 method suffers from many of the same limitations as the westergaard method. About four tons of concrete are produced per person per year worldwide and about 1. Click here to download tr34 4th edition further explanatory information. The paper describes the background, nature and mechanics of producing the report. The term concrete refers to a mixture of aggregates, usually sand.
Cstr 11, concrete core testing for strength, technical report. Pdf normal strength concrete mix design technical report. This report gives detailed procedure for testing and interpretation of results of core testing. In 2003, the third edition of concrete society technical report 34 1 was published. Technical report 34 is a guide to the design and construction of industrial concrete ground floors, published by the concrete society. The main issue is how many cores must be taken to represent a batch or a days. Alternatively, you can download all issues of the publication in individual contributions or as a complete volume free of charge in pdf format see below. This design guide serves to extend the use of concrete beyond grade 60 in the. Technical publication amendments members downloads. You could also check an article by adam neville in the november 2001 issue of concrete international, core tests. Other common aspects of concrete defects will also be considered. The concrete society technical report 11 tr 11 concrete core testing for. Technical report approved by a task group and the chairpersons of the commission.
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