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Author: Amir Golroo
Publisher:
ISBN:
Category :
Languages : en
Pages : 250
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Book Description
Pervious Concrete Pavement (PCP) has the potential to provide significant benefits. To better understand the technical, economical, and environmental impacts of PCP, the performance must be comprehensively evaluated and quantified. Because PCP is a new material, there is no mechanism for properly quantifying its performance. In addition, the application of this technology in cold climates is limited and therefore limited in-service performance data is available. A comprehensive engineering based performance model quantifies the deterioration rate and predicts future performance. Pavement performance models are developed using a pavement condition index and extensive pavement condition databases. A pavement condition index is a value which expresses the overall condition of pavement by considering various factors such as surface distresses, structural defects, and ride quality. This research will assist pavement engineers and managers in the design, construction, and management of PCP. The review of published literature reveals that there is currently a large gap in the performance evaluation of PCP in cold climates. Neither extensive condition indices nor comprehensive performance models have been developed for PCP. This research involves development of comprehensive performance models for PCP in cold climates using laboratory and field experiments and existing available data in order to predict functionality (permeability rate) and surface distresses of PCP. This study is, furthermore, aimed at developing an extensive condition index for better management of PCP by predicting and quantifying the various types of distresses and the associated functionality of PCP with particular emphasis on cold climate usage and performance. The scope of this research is to design a comprehensive tool which is simple and cost-effective. The tool involves first defining the typical types of distresses that are occurring on PCP. This is facilitated through laboratory and field design, construction, and evaluation of two test sites located in Ontario. It also involves continuous evaluation of these sites and evaluation of several other sites in the United States. The main sources of data in this research are panel rating data and field investigations data. A panel rates the condition of PCP in terms of surface distresses and permeability rates. In addition to this, field measurements of distresses and permeability rates are obtained manually. As a result, the Pervious Concrete Condition Index (PCCI) is developed through incorporation of field measurements and panel ratings. By using regression analysis, performance models are developed between PCCI and pavement age. The performance models are validated using the data splitting technique. Ultimately, the performance models are calibrated using field data by applying the Markov Chain process (acquiring expert knowledge by distributing questionnaires) and the Bayesian technique.
Author: Amir Golroo
Publisher:
ISBN:
Category :
Languages : en
Pages : 250
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Book Description
Pervious Concrete Pavement (PCP) has the potential to provide significant benefits. To better understand the technical, economical, and environmental impacts of PCP, the performance must be comprehensively evaluated and quantified. Because PCP is a new material, there is no mechanism for properly quantifying its performance. In addition, the application of this technology in cold climates is limited and therefore limited in-service performance data is available. A comprehensive engineering based performance model quantifies the deterioration rate and predicts future performance. Pavement performance models are developed using a pavement condition index and extensive pavement condition databases. A pavement condition index is a value which expresses the overall condition of pavement by considering various factors such as surface distresses, structural defects, and ride quality. This research will assist pavement engineers and managers in the design, construction, and management of PCP. The review of published literature reveals that there is currently a large gap in the performance evaluation of PCP in cold climates. Neither extensive condition indices nor comprehensive performance models have been developed for PCP. This research involves development of comprehensive performance models for PCP in cold climates using laboratory and field experiments and existing available data in order to predict functionality (permeability rate) and surface distresses of PCP. This study is, furthermore, aimed at developing an extensive condition index for better management of PCP by predicting and quantifying the various types of distresses and the associated functionality of PCP with particular emphasis on cold climate usage and performance. The scope of this research is to design a comprehensive tool which is simple and cost-effective. The tool involves first defining the typical types of distresses that are occurring on PCP. This is facilitated through laboratory and field design, construction, and evaluation of two test sites located in Ontario. It also involves continuous evaluation of these sites and evaluation of several other sites in the United States. The main sources of data in this research are panel rating data and field investigations data. A panel rates the condition of PCP in terms of surface distresses and permeability rates. In addition to this, field measurements of distresses and permeability rates are obtained manually. As a result, the Pervious Concrete Condition Index (PCCI) is developed through incorporation of field measurements and panel ratings. By using regression analysis, performance models are developed between PCCI and pavement age. The performance models are validated using the data splitting technique. Ultimately, the performance models are calibrated using field data by applying the Markov Chain process (acquiring expert knowledge by distributing questionnaires) and the Bayesian technique.
Author: Amir Golroo
Publisher: LAP Lambert Academic Publishing
ISBN: 9783838363967
Category : Pavements, Concrete
Languages : en
Pages : 316
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Book Description
Pervious Concrete Pavement: Performance in Cold Climates provides an integrated approach to pavement performance modeling through the integration of field investigations, panel rating, and conducting a survey. This book fits well into the scope of "Pavement Management" and can assist pavement engineers and managers in development of a pavement management system for pervious concrete pavement. The main interest of this book is to provide an elegant methodology to collect data, develop a novel condition index, and produce performance models for a new type of pavement. The contents of this book can be applied as a guide by researchers to investigate the characteristics and performance of new designed pavements which have not been extensively studied. More importantly, this book can serve as a complement textbook for senior undergraduate and graduate students as well as an invaluable learning source for pavement engineer professionals in the field of pavement design, monitoring, evaluation, maintenance, and management.
Author: Benjamin Nantasai
Publisher:
ISBN:
Category : Deicing chemicals
Languages : en
Pages :
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Book Description
Author: Norbert J. Delatte
Publisher: CRC Press
ISBN: 1466575107
Category : Technology & Engineering
Languages : en
Pages : 450
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Book Description
This second edition of Concrete Pavement Design, Construction, and Performance provides a solid foundation for pavement engineers seeking relevant and applicable design and construction instruction. It relies on general principles instead of specific ones, and incorporates illustrative case studies and prime design examples to highlight the material. It presents a thorough understanding of materials selection, mixture proportioning, design and detailing, drainage, construction techniques, and pavement performance. It also offers insight into the theoretical framework underlying commonly used design procedures as well as the limits of the applicability of the procedures. All chapters have been updated to reflect recent developments, including some alternative and emerging design technologies that improve sustainability. What’s New in the Second Edition: The second edition of this book contains a new chapter on sustainability, and coverage of mechanistic-empirical design and pervious concrete pavements. RCC pavements are now given a new chapter. The text also expands the industrial pavement design chapter. Outlines alternatives for concrete pavement solutions Identifies desired performance and behavior parameters Establishes appropriate materials and desired concrete proportions Presents steps for translating the design into a durable facility The book highlights significant innovations such as one is two-lift concrete pavements, precast concrete pavement systems, RCC pavement, interlocking concrete pavers, thin concrete pavement design, and pervious concrete. This text also addresses pavement management, maintenance, rehabilitation, and overlays.
Author: Paul D. Tennis
Publisher:
ISBN: 9780893122423
Category : Pavements, Concrete
Languages : en
Pages : 28
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Book Description
Author: Sonia Rahman
Publisher:
ISBN:
Category :
Languages : en
Pages : 117
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Book Description
Sustainability has become one of the most important design factors for pavement engineers over the last several years. Much of this focus has been on reducing material costs for pavement infrastructure by using innovative materials into traditional pavement design. Pervious concrete pavement has the ability to offset the typical requirement for stormwater management ponds for large paved areas. It can be considered as an alternative to impervious pavement systems as the open void structure of pervious concrete pavement allows water to infiltrate very quickly through it and join the natural ground water table. As a result, it does not disturb the natural hydrological cycle or increase the demand on the local stormwater management. Besides stormwater management, pervious concrete can also provide environmental and economic benefits such as removing water pollutants, reducing noise pollution, lowering the heat island effect, lowering light demand, and increasing driver safety through improved visibility. Pervious concrete pavement is receiving more and more interest recently due to the pressure by environmental agencies and environmental acts to reduce the quantity of stormwater runoff from urban areas. The introduction of pervious concrete pavements in cold weather climatic regions, specifically Canada, was driven by their sustainable benefits. However, there has been caution in the pavement industry to use pervious concrete in climates that experience freeze-thaw cycles. Literature shows that there is no dedicated test method to assess the performance of pervious concrete, which is structurally substantially different from conventional concrete pavements. The increased use of pervious concrete in roads, walkways, and parking lots demands improved specifications, performance criteria, and acceptance test methods for evaluating structural performance and durability of this innovative concrete product. The main objective of this research is to recommend specifications and performance criteria for pervious concrete based on the results of experimental investigations and field experience in Ontario, Canada. Above all, this study attempts to establish test procedures for evaluation of durability and performance of pervious concrete pavement. Initially the test methods available for conventional concrete were performed, the gaps were identified and the test methods were modified. Field samples were also collected and the modified test methods were performed on the field cores to define correlation between the laboratory and the field samples. Several pervious concrete field sites were constructed by the Centre for Pavement and Transportation Technology (CPATT) at the University of Waterloo, the Cement Association of Canada, and several other industry members from 2007 to 2011. Initial results from this work have been published previously. This research described herein involved continued collection of drainage data from instruments such as the moisture gauge measurements, strain gauge at three sites that are still being monitored. This field/laboratory study provides insight into the longer term drainage performance of pervious concrete pavement. This study has also involved an evaluation of the latest mix design, which has also built upon previous research. In addition new test methods have been evaluated and now that the pervious test sections are more than seven years old, the longer term drainage monitoring has been assessed. Barriers to implementing this technology are being solved, as the research is assisting designers on the various functional and structural design aspects. In this research, a framework is also developed to identify how pervious concrete can be integrated into low-volume infrastructure for cold climate such as Canada.
Author: Steven H. Kosmatka
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 224
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Book Description
Portland Cement Association reference, dealing with fundamentals, cold weather concreting, curing, admixtures, aggregates, mixing, and much more.
Author: Kwesi Akyin Brown
Publisher:
ISBN:
Category :
Languages : en
Pages : 228
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Book Description
Author: John Tristan Kevern
Publisher:
ISBN:
Category :
Languages : en
Pages : 284
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Book Description
Portland cement pervious concrete (PCPC) is increasingly used in pavement applications due to its benefits in reducing the quantity of runoff water, improving stormwater quality, enhancing the skid resistance of the pavement during storm events by rapid drainage of water, and reducing pavement noise. In the United States, PCPC typically has high porosity and low strength, which has resulted in limited use of pervious concrete, particularly in hard wet freeze environment (i.e., Midwest and North East of the U.S. and other parts of the world). Improving the strength and freeze-thaw durability of pervious concrete is necessary for increasing use of PCPC in these regions. Included in the following thesis is a literature review that includes the current state-of-practice in PCPC design, construction, and related environmental issues. The purpose of this research is to develop PCPC mix proportions that have not only sufficient porosity for stormwater infiltration, but also desirable strength and freeze-thaw durability. In this research, concrete mixes were designed with various sizes and types of aggregates, binder contents, and amounts of admixtures. The engineering properties of the aggregates were evaluated. The porosity, permeability, strength, and freeze-thaw durability of these mixes were measured. Results indicate that PCPC made with single size aggregate generally has high permeability (greater than 2000 in./hr) but not adequate strength (less than 3000 psi). Addition of a small amount of sand (5% to 7%) and fiber can significantly improve strength and freeze-thaw resistance of the concrete with limited reduction in permeability. Similar to conventional concrete, there are close relationships between PCPC air void content, permeability, and compressive strength. Compaction method and energy has considerable effect on concrete uniformity and properties. Based on the results, well-designed pervious concrete can achieve the strength, permeability, and freeze-thaw resistance to allow wide-spread use in northern climates.
Author: Norbert Delatte
Publisher: CRC Press
ISBN: 0203961080
Category : Technology & Engineering
Languages : en
Pages : 389
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Book Description
Addressing the interactions between the different design and construction variables and techniques this book illustrates best practices for constructing economical, long life concrete pavements. The book proceeds in much the same way as a pavement construction project. First, different alternatives for concrete pavement solutions are outlined. The desired performance and behaviour parameters are identified. Next, appropriate materials are outlined and the most suitable concrete proportions determined. The design can be completed, and then the necessary construction steps for translating the design into a durable facility are carried out. Although the focus reflects highways as the most common application, special features of airport, industrial, and light duty pavements are also addressed. Use is made of modeling and performance tools such as HIPERPAV and LTPP to illustrate behavior and performance, along with some case studies. As concrete pavements are more complex than they seem, and the costs of mistakes or of over-design can be high, this is a valuable book for engineers in both the public and private sectors.
