Field Evaluation Of Concrete Pavement Consolidation

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Field Evaluation Of Concrete Pavement Consolidation

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Author : Shiraz D. Tayabji
language : en
Publisher:
Release Date : 1986

Field Evaluation Of Concrete Pavement Consolidation written by Shiraz D. Tayabji and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Pavements, Concrete categories.

Relationship Of Consolidation To Performance Of Concrete Pavements

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Author : David Whiting
language : en
Publisher:
Release Date : 1988

Relationship Of Consolidation To Performance Of Concrete Pavements written by David Whiting and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Concrete categories.

A study was made of the influence of consolidation on properties of portland cement concrete. A model acceptance sampling plan for concrete consolidation is proposed. The plan is of the inspection by variables type and requires a sample size of eight per lot. The plan provides for buyer's and seller's risks of 5 percent. The plan was field tested in Idaho and Iowa. Field testing indicated that monitoring concrete pavement consolidation is practical and economically feasible.

Evaluation Of Consolidation In Concrete Pavements

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Author : Daniel Stephen Lane
language : en
Publisher:
Release Date : 1994

Evaluation Of Consolidation In Concrete Pavements written by Daniel Stephen Lane and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Pavements, Concrete categories.

Petrographic examinations of specimens from two recently constructed concrete pavements suggested that complete consolidation of the concrete may not have been achieved. Consequently, a quantitative evaluation of the degree of consolidation in these specimens was undertaken. The pavements were of plain, jointed design with dowels for load transfer. Both projects were constructed using slip-form paving machines with spud vibrators. It was found that the entrapped void content was excessive. In both cases, the entrapped void content of the lower half of the pavement was higher than the upper half. This situation apparently occurred because the vibrators were set to ride above the preplaced dowel assemblages. In one pavement the consolidation of the upper half was adequate, but the entrapped void content of the upper half of the other pavement was also found to be excessive. The following recommendations are made: (1) During preplacement conferences and actual construction, emphasize the importance of adequate consolidation of concrete throughout the pavement, especially in the vicinity of dowel assemblages. (2) Consider alternative methods of dowel placement. Pavers with dowel bar inserters are available. (3) Investigate methods to evaluate and monitor consolidation during construction. Nuclear gauges are used for this purpose in some states although not all applications have been successful. Ultrasonic techniques show promise for this application.

Evaluation Of Consolidation Problems In Thicker Portland Cement Concrete Pavements

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Author : Jennifer A. Distlehorst
language : en
Publisher:
Release Date : 2003

Evaluation Of Consolidation Problems In Thicker Portland Cement Concrete Pavements written by Jennifer A. Distlehorst and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Concrete categories.

The purpose of this study was to investigate methods of reducing the size and total volume of the entrapped air voids in concrete slabs that are over 9 in. thick. Laboratory and field tests were designed to investigate the effect of variations in vibration frequency and aggregate gradation on entrapped air content, strength and performance factors such as smoothness, faulting, adhesion failures, and spalling. In 1993, a test section was constructed to compare the effects of increasing the proportion of coarse aggregate to fine aggregate and increasing vibration frequency. Annual surveys of joint sealant failures, spalling and joint faulting were performed from 1994 to 2001 on this test section. Samples from this project were cut, polished and analyzed to determine entrained and entrapped air content. In 1994, another test section was constructed to assess the effect of controlling the total gradation of concrete aggregate and increasing vibration frequency. A profilograph test was performed in 1996 to measure pavement smoothness on this project. Core samples were taken from both the wheel path and the wheel gap and nuclear density meters were used on both projects to measure the in-situ density of the pavements.

Field Evaluation Of Asphalt Concrete Overlays On Concrete Pavements

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Author : Brian Garkie
language : en
Publisher:
Release Date : 2002

Field Evaluation Of Asphalt Concrete Overlays On Concrete Pavements written by Brian Garkie and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Pavements categories.

Field Evaluation Of Concrete Pavement Curling And Warping Responses

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Author : Matthew James Sheehan
language : en
Publisher:
Release Date : 1999

Field Evaluation Of Concrete Pavement Curling And Warping Responses written by Matthew James Sheehan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Pavements, Asphalt concrete categories.

Nuclear Testing For Density Control Of Concrete Pavement

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Author : Richard Spalti
language : en
Publisher:
Release Date : 1978

Nuclear Testing For Density Control Of Concrete Pavement written by Richard Spalti and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Pavements categories.

Handbook On Nondestructive Testing Of Concrete

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Author : V.M. Malhotra
language : en
Publisher: CRC Press
Release Date : 2003-12-29

Handbook On Nondestructive Testing Of Concrete written by V.M. Malhotra and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-12-29 with Technology & Engineering categories.

Civil and structural engineering consultants engaged in quality control or investigations of hardened concrete need a comprehensive resource that explains the methods of determining strength and other performance characteristics. Handbook on Nondestructive Testing of Concrete, Second Edition answers this demand by providing a thorough analys

Field Study Of Air Content Stability In The Slipform Paving Process

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Author :
language : en
Publisher:
Release Date : 2012

Field Study Of Air Content Stability In The Slipform Paving Process written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Concrete categories.

This study evaluated the impacts of construction on the air content and air-void system structure of Portland cement concrete pavements. The primary intent was to quantify the air content of fresh concrete before and after it has gone through the slipform paver. The air-void system parameters of hardened concrete were then assessed using cast and extracted core specimens. The results of the air content testing on fresh concrete and the concrete cylinder specimens cast in the field suggested that there is some loss of air as the concrete passes through the paver. Laboratory testing performed on cores extracted from the pavement did not provide any conclusive evidence that entrained air is lost during the slipform paving process. In fact, many of the extracted cores had measured air content values that were much higher than the specification requirement. If excessive, this could result in increased permeability and low-strength related issues. Although a rigorous statistical analysis was not performed, the results suggest that the air content testing on fresh concrete is not capturing the true air content of the concrete placed with a slipform paver. The fresh concrete air content is generally lower than the air content measured in the cores.

Highway Concrete Pavement Technology Development And Testing Field Evaluation Of Strategic Highway Research Program Shrp C 205 Test Sites High Performance Concrete

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Author :
language : en
Publisher:
Release Date : 2006

Highway Concrete Pavement Technology Development And Testing Field Evaluation Of Strategic Highway Research Program Shrp C 205 Test Sites High Performance Concrete written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Alkali-aggregate reactions categories.