Investigation of Joint Deterioration in MnROAD Phase 1 Jointed Concrete Pavement Test Sections PDF Download
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Author: Ryan J. Rohne
Publisher:
ISBN:
Category : Pavements, Concrete
Languages : en
Pages : 23
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Book Description
Author: Ryan J. Rohne
Publisher:
ISBN:
Category : Pavements, Concrete
Languages : en
Pages : 23
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Book Description
Author: Wynand JvdM. Steyn
Publisher: Transportation Research Board
ISBN: 0309223660
Category : Technology & Engineering
Languages : en
Pages : 257
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Book Description
"TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 433: Significant Findings from Full-Scale Accelerated Pavement Testing documents and summarizes significant findings from the various experimental activities associated with full-scale accelerated pavement testing (f-sAPT) programs that have taken place between 2000 and 2011. The report also identifies gaps in knowledge related to f-sAPT and where future research may be needed. NCHRP Synthesis 433 is designed to expand the f-sAPT base of knowledge documented in NCHRP Syntheses 325 and 235, both with the same title of Significant Findings from Full-Scale Accelerated Pavement Testing. f-sAPT is the controlled application of a wheel loading, at or above the appropriate legal load limit, to a pavement system to determine pavement response in a compressed time period. The acceleration of damage is achieved by one or more of the following factors: increased repetitions, modified loading conditions, imposed climatic conditions, and thinner pavements with a decreased structural capacity which have shorter design lives"--
Author: Maria Del Mar Arribas-Colon
Publisher: Purdue University Press
ISBN: 9781622602605
Category : Transportation
Languages : en
Pages : 88
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Book Description
Some of the Indiana concrete pavements constructed within the last 10-20 years have shown signs of premature deterioration, especially in the areas adjacent to the longitudinal and transverse joints. This deterioration typically manifested itself as cracking and spalling of concrete combined with the loss of material in the direct vicinity of the joint. In addition, in some cases "bulb-shaped" damage zones were also observed under the sealed parts of the joints. The objective of this study was to investigate possible causes of this premature deterioration. To reach this objective, the characteristics of the concrete in and near the deteriorated joints were compared and contrasted to the concrete characteristics in the non-deteriorated sections of pavement. The study was conducted in two different phases (Phase I and Phase II), and the findings are presented as a two-part report. The investigation started with a detailed inventory of selected areas of affected pavements in order to identify and classify the existing types of distresses and select locations for collection of the cores. During the Phase I of the study a total of 36 concrete cores were extracted from 5 different pavements.. During Phase II of the study a total of 18 cores were retrieved from five different pavement sections and subject to examination. The cores were subjected to eighth different tests: air-void system determination, Scanning Electronic Microscopy (SEM) analysis, X-ray diffraction (XRD) analysis, sorptivity test, freeze-thaw & resonance frequency test, resistance to chloride ion penetration (RCP) test and chloride profile (concentration) determination. The test results identified several cases of in-filling of the air voids (especially smaller air bubbles) with secondary deposits. These deposits were most likely the result of the repetitive saturation of air voids with water and substantially reduced the effectiveness of the air voids system with respect to providing an adequate level of freeze-thaw protection. Specifically, it was observed that the existing air void system in the concrete from panels near the deteriorated longitudinal joint had neither spacing factors nor specific surface values within the range recommended for freeze-thaw durability. Contrary to this, nearly all the concrete in lanes without damage had an adequate air void system at the time of sampling. In addition, the affected concrete often displayed an extensive network of microcracks, had higher rates of absorption and reduced ability to resist chloride ions penetration. From the observation of the drains performed using the remote camera it was obvious that not all the drains were functioning properly and some were entirely blocked. However, more precise or direct correlations could not be made between the conditions of the drains and observed pavement performance.
Author: M. Tiznobaik
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 14
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Book Description
Premature deterioration at joint spresents a critical durability issue of concrete pavements associated with considerable repair costs. Durability of concrete exposed to aggressive environments depends mainly on the penetrability of its pore structure. Because absorption has been used as an important indicator for quantifying the durability of concrete, the aim of this study was to develop a customized test protocol for determining the absorption capacity of joints in concrete pavements. The study involved three phases with thorough statistical analyses of results. In Phase I, different absorption procedures were applied to laboratory specimens prepared with water-to-binder ratios (w/b) of 0.3, 0.5, and 0.6, representing variable qualities of concrete. The most efficient procedure was identified from Phase I and further verified in Phase II on concrete specimens prepared with a close range of w/b (0.35 and 0.40). In Phase III, the performance of the absorption protocol selected from the previous phases was assessed on cores extracted from recently constructed pavement sections in Winnipeg, Manitoba, Canada. To further complement and verify the trends obtained from the absorption protocol, mercury intrusion porosimetry tests were conducted on the field cores to capture the characteristics of the pore structure. The results indicated that the proposed absorption protocol was efficient, robust, and reliable in reflecting the physical features of the microstructure of field pavement sections, including joint locations.
Author: Peter C. Taylor
Publisher:
ISBN:
Category : Ames (Iowa)
Languages : en
Pages : 210
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Book Description
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.
Author: Anastasios M. Ioannides
Publisher:
ISBN:
Category : Pavements, Concrete
Languages : en
Pages : 3
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Book Description
Research in the state of Wisconsin over the past forty years has found no noticeable difference in performance between jointed concrete pavement (JCP) constructed with a sealed contraction joint and JCP constructed with a single, narrow, unsealed saw cut. The research was extensive, investigating pavements constructed with free draining bases or dense graded bases on fine grained or coarse grained subgrades. As a result of this research, Wisconsin has not sealed joints in concrete pavement since 1990. Wisconsin's experience led other states to investigate the effectiveness of sealing joints. In 1991, as a supplement to the LTPP SPS-4 experiment, Arizona DOT installed a joint seal experiment containing more than 20 different sealants as well as unsealed joints on US 60 in Mesa. In cooperation with Arizona DOT, similar test sections were constructed in Nevada, Utah and Colorado. Following discussions with ADOT's research engineer, ODOT decided to construct a test section identical to the ADOT site in order to provide data for the wet-freeze climatic zone. This research project was initiated to document the construction of the test sections and to monitor and report the initial performance of the test sections. This project was financed entirely with federal funds provided by the FHWA Test and Evaluation Project 30, "High Performance Concrete Pavement."
Author: American Association of State Highway and Transportation Officials
Publisher: AASHTO
ISBN: 1560510552
Category : Pavements
Languages : en
Pages : 622
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Book Description
Design related project level pavement management - Economic evaluation of alternative pavement design strategies - Reliability / - Pavement design procedures for new construction or reconstruction : Design requirements - Highway pavement structural design - Low-volume road design / - Pavement design procedures for rehabilitation of existing pavements : Rehabilitation concepts - Guides for field data collection - Rehabilitation methods other than overlay - Rehabilitation methods with overlays / - Mechanistic-empirical design procedures.
Author: Ken Skorseth
Publisher:
ISBN:
Category : Gravel roads
Languages : en
Pages : 112
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Book Description
The purpose of this manual is to provide clear and helpful information for maintaining gravel roads. Very little technical help is available to small agencies that are responsible for managing these roads. Gravel road maintenance has traditionally been "more of an art than a science" and very few formal standards exist. This manual contains guidelines to help answer the questions that arise concerning gravel road maintenance such as: What is enough surface crown? What is too much? What causes corrugation? The information is as nontechnical as possible without sacrificing clear guidelines and instructions on how to do the job right.
Author: Robert Otto Rasmussen
Publisher: Transportation Research Board
ISBN: 0309070198
Category : Pavements
Languages : en
Pages : 96
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Book Description
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 338: Thin and Ultra-Thin Whitetopping summarizes available information to document how state departments of transportation and others are currently using thin and ultra-thin whitetopping overlays among various pavement rehabilitation alternatives. The report covers all stages of the proper application of whitetopping overlays, including project selection, design, materials selection, construction, maintenance, and eventual rehabilitation or replacement.
Author: Paul D. Tennis
Publisher:
ISBN: 9780893122423
Category : Pavements, Concrete
Languages : en
Pages : 28
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Book Description
