Rapid Measurement of Concrete Pavement Thickness and Reinforcement Location PDF Download
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Author: William G. Weber
Publisher: Transportation Research Board National Research
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 628
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Book Description
This report documents and presents the results of a study that evaluated currently available nondestructive testing systems that appeared to have potential for supplementing or replacing coring in determining concrete pavement thickness and reinforcement location. The evaluation was done primarily in the field. The principal work consisted of the systems under on-the-job conditions on eight paving projects in six states. The measurement technique were employed in conjunction with statistical acceptance criteria evolved in the course of the study.
Author: William G. Weber
Publisher: Transportation Research Board National Research
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 628
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Book Description
This report documents and presents the results of a study that evaluated currently available nondestructive testing systems that appeared to have potential for supplementing or replacing coring in determining concrete pavement thickness and reinforcement location. The evaluation was done primarily in the field. The principal work consisted of the systems under on-the-job conditions on eight paving projects in six states. The measurement technique were employed in conjunction with statistical acceptance criteria evolved in the course of the study.
Author: Ronald R. Braun
Publisher: Transportation Research Board National Research
ISBN: 9780309027779
Category :
Languages : en
Pages : 63
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Book Description
Author: B Andrew Kugler
Publisher:
ISBN: 9780309025119
Category : Deicing chemicals
Languages : en
Pages : 73
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Book Description
Author: S. D. Howkins
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 106
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Book Description
The feasibility is investigated of various acoustic (sonic), nuclear, and electrical techniques for nondestructive measurement of Portland cement and bituminous concrete pavement thickness both during and after construction. Recommendations are made for equipment development and field testing of three specific methods that could potentially result in such measurements with the desired degree of speed and accuracy.
Author: W. G. Weber
Publisher:
ISBN:
Category :
Languages : en
Pages : 266
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Book Description
Author: Gerardo G. Clemeña
Publisher:
ISBN:
Category : Ground penetrating radar
Languages : en
Pages : 44
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Book Description
Previous microwave reflection measurements made on simple, unreinforced concrete blocks have shown that the transit time of a microwave through concrete is linearly related to its thickness. In this study measurements were conducted on concrete slabs that were built to simulate pavements and on an actual continuously reinforced concrete pavement to determine whether this type of rapid nondestructive measurement could be used in lieu of coring in the inspection of newly built concrete pavements for compliance with slab thickness specifications. It was found that reflections from the bottom of a concrete pavement slab may often be too weak and difficult to identify in a radar profile; therefore, the transit time of a microwave through reinforced concrete slab would often be difficult to measure with reasonable accuracy. The results obtained with radar measurements made on simulated pavement slabs showed that radar was only able to indicate whether a slab is too thin (i.e., less than 8 in); but those measurements made on an actual pavement yielded reasonably good agreement between the thickness determined by coring and those determined by reflection measurements in conjunction with a calibration procedure. Based on these mixed results, it would be difficult to predict how reliable radar would be for precise quantitative measurement of slab thickness of a particular pavement until an actual radar scan of the pavement has been conducted. If the reflection from the bottom of the slab appeared to be identifiable, then the calibration procedure could be used to determine the slab thickness for the entire pavement. Otherwise, radar can be used at least as a screening tool to spot areas in the pavement that appear to be to thin. These areas would then be cored to verify the radar readings.
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: A. Michel Alexander
Publisher:
ISBN:
Category : Concrete construction
Languages : en
Pages : 34
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 838
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Book Description
Author: Tony C. Liu
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 426
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Book Description
