Determination of Air Content of Hardened Concrete Using Image Analysis [microform] PDF Download

Author: Leo P. H. (Leo Pieter H.) Meyer
Publisher: National Library of Canada
ISBN: 9780315140820
Category :
Languages : en
Pages : 320

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Author: Missouri. Department of Transportation. Research Development and Training
Publisher:
ISBN:
Category : Ground penetrating radar
Languages : en
Pages : 4

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Author: Wallace Matthew Mosher
Publisher:
ISBN:
Category :
Languages : en
Pages : 318

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Author: Basil Mark Harris
Publisher:
ISBN:
Category :
Languages : en
Pages : 864

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Author: J.C. Maso
Publisher: CRC Press
ISBN: 0203627253
Category : Architecture
Languages : en
Pages : 218

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An important new state-of-the-art report prepared by RILEM Technical Committee 108 ICC. It has been written by a team of leading international experts from the UK, USA, Canada, Israel, Germany, Denmark, South Africa, Italy and France. Research studies over recent years in the field of cement science have focused on the behaviour of the interfaces between the components of cement-based materials. The techniques used in other areas of materials science are being applied to the complex materials found in cements and concretes, and this book provides a significant survey of the present state of the art.

Author: Alan B. Poole
Publisher: CRC Press
ISBN: 1351722336
Category : Architecture
Languages : en
Pages : 793

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This classic reference has established the value of petrography as a powerful method for the investigation of concrete as a material. It provides an authoritative and well-illustrated review of concrete composition and textures, including the causes of defects, deterioration, and failure that can be identified using a petrological microscope. This new edition is entirely revised and updated and also greatly extended to take account of new scientific developments and significant improvements in instrumentation and to reflect current laboratory working practices, as well as to reflect new understanding of the performance of concrete and related materials. Now in full color throughout, Concrete Petrography, Second Edition provides case study examples, with appropriate explanatory discussions and practical advice on selecting, handling and preparing specimens. It assists and guides the engineer, the trainee and the experienced petrographer in understanding the scientific evidence that is basic to petrographic analysis and so will lead to more accurate and timely diagnosis and treatment of problems in structural concrete. This book includes: Contributions in specialist areas by internationally recognized experts Explanation of computer techniques as an aid to petrography Full coverage of inspection, sampling, and specimen preparation New sections covering recent technological development of equipment Guidance on observation of cement and concrete mineralogy and microfabrics Discussion and illustrative examples of deterioration and failure mechanisms New work and guidance on the determination of water/cement ratio New color illustrations and micrographs throughout Thorough updating of standards, other authoritative publications, and references A fully revised, extended, and updated glossary of optical and other properties

Author: Chris Baumgart
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 40

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Author: Scott Schlorholtz
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 62

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Author: H F W Taylor
Publisher: Thomas Telford
ISBN: 9780727725929
Category : Science
Languages : en
Pages : 488

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A revised and updated text on cement chemistry. This edition forms a comprehensive and in-depth reference work that explains in detail all aspects of cement chemistry.

Author: A. M. Ramezanianpour
Publisher:
ISBN:
Category : Air-Void Characterization
Languages : en
Pages : 14

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Book Description
Air-void analysis of hardened concrete is typically performed according to ASTM C457-09 ["Standard Test Method for Microscopical Determination of Parameters of Air-Void System in Hardened Concrete," Annual Book of ASTM Standards, Vol. 4.2, ASTM International, West Conshohocken, PA], which can be tedious to perform and is operator subjective. Several alternative automated methods have been proposed, two of which are the Rapid Air 457 and the scanner method developed at Michigan Technological University. In each of these methods, images are collected from contrast enhanced surfaces of polished concrete, and image analysis is performed to calculate air-void system parameters. In this research, 22 concrete samples were examined using these two methods, the air-void system parameters were compared to those obtained from the ASTM C457 standard, and the precision of the results was compared to the recommendations of ASTM standard. It was concluded that the total air content and the spacing factor of the air voids measured by Rapid Air 457 and the scanner method were comparable to the air content and the spacing factor measured according to the standard manual method. Considering the fact that the automated image systems could detect air voids smaller in diameter than those typically seen by an operator, it was found that if these small air voids are counted, calculated spacing factors are smaller than those calculated by the manual method. If small diameter air voids are removed from the analysis, then spacing factors agree fairly well with those calculated by ASTM C457 from stereo-optical microscopy.