An Overview Of Joint Deterioration In Concrete Pavement
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An Overview Of Joint Deterioration In Concrete Pavement
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Author : Wesley Jones
language : en
Publisher:
Release Date : 2013-12-31
An Overview Of Joint Deterioration In Concrete Pavement written by Wesley Jones and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-12-31 with categories.
Concrete pavements represent a large portion of the transportation infrastructure. While the vast majority of concrete pavements provide excellent long-term performance, a portion of these pavements have recently shown premature joint deterioration. Substantial interest has developed in understanding why premature joint deterioration is being observed in jointed portland cement concrete pavements (PCCP). While some have attributed this damage to insufficient air void systems, poor mixture design, or chemical reaction between the salt and the paste, it is the hypothesis of this work that a component of this damage can be attributed to fluid absorption at the joints. This report begins by discussing the importance of the level of concrete saturation on freeze-thaw damage. Second, this report describes the influence of deicing salt solutions on drying and wetting of concrete. Third, the report describes some observations from field studies. Fourth, the report discusses soy methyl esters polystyrene blends (SME-PS) as a potential method to extend the service life of concrete pavements by limiting the ingress of salt solutions. The report also discusses field application of the SME-PS blends for field investigation. Finally, the report discusses the development of a test to assess chloride solution ingress during temperature cycling. The aim of this work is to provide background on some aspects that can lead to joint deterioration and to provide the pavement community alternatives on how sealers and deicers may be able to be used more efficiently to reduce joint damage.
Conclusions From The Investigation Of Deterioration Of Joints In Concrete Pavements
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Author : Peter Taylor
language : en
Publisher:
Release Date : 2016
Conclusions From The Investigation Of Deterioration Of Joints In Concrete Pavements written by Peter Taylor and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with Pavements, Concrete categories.
Premature deterioration of concrete at the joints in concrete pavements and parking lots has been reported across the northern states. The distress may first appear as shadowing when microcracking near the joints traps water, or as cracks parallel to and about 1 inch from the saw cut. The distress later exhibits as a significant loss of material. Not all roadways are distressed, but the problem is common enough to warrant attention. The aim of the work being conducted under this and parallel contracts was to improve understanding of the mechanisms behind premature joint deterioration and, based on this understanding, develop training materials and guidance documents to help practitioners reduce the risk of further distress and provide guidelines for repair techniques. While work is still needed to understand all of the details of the mechanisms behind premature deterioration and the prevention of further distress, the work in this report has contributed to advancing the state of the knowledge.
Durability Of Saw Cut Joints In Plain Cement Concrete Pavements
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Author : Javier Castro
language : en
Publisher: Joint Transportation Research Program
Release Date : 2011-12-12
Durability Of Saw Cut Joints In Plain Cement Concrete Pavements written by Javier Castro and has been published by Joint Transportation Research Program this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-12-12 with Concrete categories.
The objective of this project was to evaluate factors influencing the durability of the joints in portland cement concrete pavement in the state of Indiana. Specifically this work evaluated the absorption of water, the absorption of deicing solutions, the relationship between the degree of saturation and concrete deterioration, and the role of Soy Mehyl Esters as a potential concrete sealant. The aforementioned items were studied in conjunction with the observation of premature joint deterioration in concrete pavements. To better understand the potential mechanisms responsible for joint deterioration, a series of mortars were tested that are consistent with the mortar fraction of concrete paving mixtures. The first portion of the work examined the role of deicing salt solutions on the wetting and drying behavior of concrete elements (this was a joint series of experiments with SPR 3093). The second portion of the work examined the concept of the degree of saturation and its relationship with freeze-thaw damage. Specifically mortars with different air contents were examined. The final portion of the work examined the potential use of penetrating concrete sealers (like soy methyl esters) to reduce water absorption and the corresponding freeze-thaw damage.
Concrete Pavement Design Guidance Notes
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Author : Geoffrey Griffiths
language : en
Publisher: CRC Press
Release Date : 2007-04-19
Concrete Pavement Design Guidance Notes written by Geoffrey Griffiths and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-04-19 with Technology & Engineering categories.
This comprehensive design guide summarizes current developments in the design of concrete pavements. Following an overview of the theory involved, the authors detail optimum design techniques and best practice, with a focus on highway and infrastructure projects. Worked examples and calculations are provided to describe standard design methods, illustrated with numerous case studies. The author provides guidance on how to use each method on particular projects, with reference to UK, European and US standards and codes of practice. Concrete Pavement Design Guidance Notes is an essential handbook for civil engineers, consultants and contractors involved in the design and construction of concrete pavements, and will also be of interest to students of pavement design.
Interim Guide For Optimum Joint Performance Of Concrete Pavements
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Author :
language : en
Publisher:
Release Date : 2011
Interim Guide For Optimum Joint Performance Of Concrete Pavements written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Pavements, Concrete categories.
The purpose of this guide is to help practitioners understand how to optimize concrete pavement joint performance through the identification, mitigation, and prevention of joint deterioration. It summarizes current knowledge from research and practice to help practitioners access the latest knowledge and implement proven techniques. Emphasizing that water is the common factor in most premature joint deterioration, this guide describes various types of joint deterioration that can occur. Some distresses are caused by improper joint detailing or construction, and others can be attributed to inadequate materials or proportioning. D cracking is a form of joint distress that results from the use of poor-quality aggregates. A particular focus in this guide is joint distress due to freeze-thaw action. Numerous factors are at play in the occurrence of this distress, including the increased use of a variety of deicing chemicals and application strategies. Finally, this guide provides recommendations for minimizing the potential for joint deterioration, along with recommendations for mitigation practices to slow or stop the progress of joint deterioration.
Durability Of Saw Cut Joints In Plain Cement Concrete Pavements
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Author :
language : en
Publisher:
Release Date : 2011
Durability Of Saw Cut Joints In Plain Cement Concrete Pavements written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Concrete categories.
The main objective of this study was to evaluate factors influencing the durability of the joints in portland cement concrete pavement in the state of Indiana. The scope of the research included the evaluation of the absorption of water in concrete, the absorption of deicing solutions in concrete, the relationship between the degree of saturation and concrete deterioration, and the role of Soy Mehyl Esters (SME) as a potential concrete sealant. The aforementioned items were studied in conjunction with the observation of premature joint deterioration in concrete pavements. Previous work by the PI identified that deteriorating joints were observed to frequently have standing water and damaged joint sealant. This work was conducted to better understand the potential mechanisms responsible for joint deterioration, a series of mortars were tested that are consistent with the mortar fraction of concrete paving mixtures. The first portion of the work examined the role of deicing salt solutions on the wetting and drying behavior of concrete elements. The second portion of the work examined the concept of the degree of fluid saturation and its relationship with freeze-thaw damage. The final portion of the work examined the potential use of penetrating concrete sealers (like soy methyl esters) to reduce water absorption and the corresponding freeze-thaw damage.
Investigation Of Deterioration Of Joints In Concrete Pavements
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Author : Peter C. Taylor
language : en
Publisher:
Release Date : 2012
Investigation Of Deterioration Of Joints In Concrete Pavements written by Peter C. Taylor and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Ames (Iowa) categories.
Premature deterioration of concrete at the joints in concrete pavements and parking lots has been reported across the northern states. The distress is first observed as shadowing when microcracking near the joints traps water, later exhibiting as significant loss of material. Not all roadways are distressed, but the problem is common enough to warrant attention. The aim of the work being conducted under this and parallel contracts was to improve understanding of the mechanisms behind premature joint deterioration and, based on this understanding, develop training materials and guidance documents to help practitioners reduce the risk of further distress and provide guidelines for repair techniques. While work is still needed to understand all of the details of the mechanisms behind premature deterioration and prevention of further distress, the work in this report has contributed to advancing the state of knowledge.
Synthesis
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Author : Jason Weiss
language : en
Publisher:
Release Date : 2019-05
Synthesis written by Jason Weiss and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-05 with categories.
Distress has recently been observed in the joints of some concrete pavements, primarily in the wet-freeze states. This distress often begins in longitudinal joints, followed by transverse joints and results in the significant loss of material from the joint area. Although it may only affect approximately 10% of the concrete pavements system-wide, it greatly reduces the service life and increases maintenance costs of the pavements it effects. Primary issues that emerged from studies on this phenomenon include the importance of the timing of joint sawing, the width of the joint opening, degree of concrete or joint sealing, drainage and degree of saturation of the concrete at the joint, quality of the air void system, role of deicing chemicals, quality of curing, and the degree of restraint at the joint. Although this broad collection of issues implies that we still lack complete understanding of all causes of joint deterioration, it also makes it pretty clear that the observed damage is a result of combination of several factors. This study synthesizes completed research related to concrete pavements joint deterioration and provides information to advance the knowledge and understanding of the variables involved in in this deterioration process and suggests the best practices that can lead to its reduction or mitigation.
Failure And Repair Of Continuously Reinforced Concrete Pavement
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Author : National Research Council (U.S.). Transportation Research Board
language : en
Publisher: Transportation Research Board National Research
Release Date : 1979
Failure And Repair Of Continuously Reinforced Concrete Pavement written by National Research Council (U.S.). Transportation Research Board and has been published by Transportation Research Board National Research this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with Technology & Engineering categories.
The performance of CRCP has revealed a number of failure modes that are traceable to design, construction, materials, and maintenance deficiencies and such other factors as environemntal conditions and traffic loadings. This report of the Transportation Research Board includes a review of the cumulative experiences of state that have constructed and maintained CRCP. Guidelines for repair techniques are included, and areas of needed research are identified.
Early Detection Of Joint Distress In Portland Cement Concrete Pavements
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Author : Dwayne Harris
language : en
Publisher:
Release Date : 2015-09-01
Early Detection Of Joint Distress In Portland Cement Concrete Pavements written by Dwayne Harris and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-09-01 with categories.
INDOT (as well as several surrounding states) have observed that certain concrete pavements may show a susceptibility to joint deterioration. Unfortunately, by the time that this joint deterioration is observed it is often too late and costly partial depth repairs are needed. The deterioration is generally occurring in the joint behind the backer rod and joint sealant; as such, it is difficult to detect even if one is standing directly above the joint. This project investigated the use of electrical resistivity and ground penetrating radar as two techniques to detect premature joint deterioration. The thought process was that if the joint deterioration is determined at an early stage, low cost corrective actions can be taken to extend the life of the concrete. The electrical response was measured for mortars subjected to a temperature cycle from 23 °C to -35 °C, with varying degrees of saturation, and varying salt concentrations. The resistivity increased as the degree of saturation was reduced due to the reduction in the volume of the conductive medium and increase in tortuosity. Changes in resistivity were detected when cracking occurred in the sample. The magnitude of these changes was similar to that detected using changes in the ultrasonic wave speed. Ground penetrating radar (GPR) was used effectively to detect fluid accumulation in the saw-cut joint behind the joint sealant. The typical GPR waveforms are however difficult and time consuming to interpret. A signal processing approach called, referred to as the CID, was used to obtain a single number that reflects the potential for fluid in the joint. Scalar waveform features and the computed CID can be used to estimate which joints may contain fluid thereby providing insights into which joint sealant sections may need to be repaired or when a sufficient number of joints may contain fluid suggesting a larger joint maintenance effort be performed to seal the joints or the concrete.