Nondestructive Testing on Concrete Pavements by Ultrasonic Wave PDF Download
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Author: M. IWATAKE
Publisher:
ISBN:
Category :
Languages : en
Pages : 1
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Book Description
Author: M. IWATAKE
Publisher:
ISBN:
Category :
Languages : en
Pages : 1
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Book Description
Author: George M. Pace
Publisher:
ISBN:
Category : Pavements, Concrete
Languages : en
Pages : 94
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Book Description
The report presents the results obtained from the soniscope instrument for use in the nondestructive testing of portland-cement concrete pavements. Essentially, the instrument was tested to determine if consistent velocity measurements could be obtained with the transducers in a position vertical on the prestressed, reinforced, and plain concrete pavements. Also, of interest during the investigation was the maximum distance through portland-cement concrete for which consistent velocity measurements could be obtained. (Author).
Author: V. M. Malhotra
Publisher: CRC Press
ISBN: 0803120990
Category : Technology & Engineering
Languages : en
Pages : 389
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Book Description
Civil engineers will value this resource that examines the tools and techniques used to estimate the in-place strength on concrete, permeation properties that relate to potential durability, and the methods used to assess the internal condition of concrete and the corrosion activity of steel reinforcement.
Author: Andrej Galan
Publisher: Elsevier Science Limited
ISBN: 9780444987440
Category : Technology & Engineering
Languages : en
Pages : 344
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Book Description
Non-destructive methods for materials testing are being increasingly used in testing concrete structures. In the construction industry, their use has resulted in improvements in the quality of concrete products and structures. It is no longer possible to rely solely on the traditional methods of quality control, and progressive, non-destructive methods must be applied in modern quality-control practice. This new approach in the field of non-destructive testing of concrete structures requires that new parameters be introduced for their verification and evaluation with regard to concrete strength, and for the solution of problems related to the use of combined multiparameter non-destructive methods. The present work provides a comprehensive overview on the solutions available for problems encountered in the non-destructive testing of concrete. Including the use of original combined ultrasonic-pulse methods developed by the author for testing concrete strength. Special attention is given to specific issues of testing in concrete structures and members by means of the combined and one-parameter methods and to the interpretation of the measurement results.
Author:
Publisher: Transportation Research Board
ISBN: 0309129338
Category : Technology & Engineering
Languages : en
Pages : 96
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Book Description
" TRB's second Strategic Highway Research Program (SHRP 2) Report S2-R06A-RR-1: Nondestructive Testing to Identify Concrete Bridge Deck Deterioration identifies nondestructive testing technologies for detecting and characterizing common forms of deterioration in concrete bridge decks.The report also documents the validation of promising technologies, and grades and ranks the technologies based on results of the validations.The main product of this project will be an electronic repository for practitioners, known as the NDToolbox, which will provide information regarding recommended technologies for the detection of a particular deterioration. " -- publisher's description.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 844
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Book Description
Author: A. Michel Alexander
Publisher:
ISBN:
Category : Concrete construction
Languages : en
Pages : 34
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Book Description
Author: Krzysztof Schabowicz
Publisher: MDPI
ISBN: 3039216902
Category : Science
Languages : en
Pages : 448
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Book Description
This book was proposed and organized as a means to present recent developments in the field of nondestructive testing of materials in civil engineering. For this reason, the articles highlighted in this editorial relate to different aspects of nondestructive testing of different materials in civil engineering—from building materials to building structures. The current trend in the development of nondestructive testing of materials in civil engineering is mainly concerned with the detection of flaws and defects in concrete elements and structures, and acoustic methods predominate in this field. As in medicine, the trend is towards designing test equipment that allows one to obtain a picture of the inside of the tested element and materials. From this point of view, interesting results with significance for building practices have been obtained
Author: J. Blitz
Publisher: Springer Science & Business Media
ISBN: 9780412604706
Category : Technology & Engineering
Languages : en
Pages : 286
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Book Description
Ultrasonic Methods of Non-Destructive Testing covers the basic principles and practices of ultrasonic testing, starting with the basic theory of vibration and propagation, design and properties and probes, and then proceeding to the principles and practice of the various ultrasonic techniques for different types of components and structures, both metallic and non-metallic. The design and operation of various types of equipment are covered and references to appropriate national and international standards are provided. Numerous applications are discussed comprehensively and special attention is paid to latest developments. A large number of references is provided so as to enable the reader to obtain further information.
Author: John S. Popovics
Publisher:
ISBN:
Category : Nondestructive testing
Languages : en
Pages : 80
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Book Description
This report describes work to develop non-destructive testing methods for concrete pavements. Two methods, for pavement thickness and in-place strength estimation, respectively, were developed and evaluated. The thickness estimation method is based on a new hybrid approach that combines frequency domain (impact-echo) and time domain (seismic) data. This new method makes use of a fuller understanding of the dynamic wave phenomenon, which was developed during the course of the work. The effects of material property gradients (due to aggregate segregation and moisture variation) through the slab thickness are compensated for in the method. A field testing method is proposed, described, and experimentally verified. Verification tests carried out on full-scale concrete slabs cast on granular base show that the new method provides more accurate thickness estimates than those obtained by the standard impact-echo procedure. On average, the error between predicted thickness and actual thickness determined by cores is less than 6 mm, although some individual estimates exceed this error value. However, the new method does not work on concrete over asphalt or cement-treated base (which accounts for most concrete pavements) or on full-depth asphalt concrete pavements. The in-place strength estimation method is based on ultrasonic surface wave measurements. A field test method is proposed, described, and experimentally verified. Verification tests carried out on a range of concrete mixtures with varying aggregate type and cementitious material, all of which satisfy the requirements of "A3" concrete as specified by the Virginia Department of Transportation. Two data analysis procedures are proposed. One procedure predicts flexural strength within 50 psi of actual strength determined by direct strength measurement of beams, although the procedure requires 1-day strength and ultrasonic values to be known. The second procedure is more flexible but provides strength estimates with lower accuracy. Field tests, which were carried out at two pavement sites in Virginia, are reported for both methods. Finally, a detailed description of the required testing equipment and experimental and analytical procedures for both methods are included in the Appendix. Cost savings from implementing the methods are not obvious, since the methods cannot be used to measure the thickness of most concrete pavements for acceptance and payment. The methods can be used to nondestructively evaluate the modulus of rupture of pavements for analysis purposes, but savings would depend on the nature of the analysis.
