Download or read book A Performance graded Binder Specification for Surface Treatments written by Amy Louise Epps and published by . This book was released on 2001 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Surface Performance graded SPG Specification for Surface Treatment Binders written by Lubinda F. Walubita and published by . This book was released on 2005 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presently, surface treatment design and material selection is based on traditional specifications and experience, which are not performance-based and sometimes result in inadequate performance of the surface treatment. In 2000 the first phase of a Texas Department of Transportation (TxDOT) research project developed a surface performance-graded (SPG) specification for the selection of surface treatment binders (Research Report 1710-1). The SPG specification is performance-based and utilizes binder properties directly related to surface treatment performance and associated distress. The specification takes into account environmental conditions, aging effects of the binder, visco-elastic behavior, and reliability. The objective of this second phase of the project was to investigate and establish the validity and applicability of the proposed SPG specification, make modifications where necessary, and, finally, recommend the SPG specification for practical implementation. The research methodology involved highway section identification, laboratory testing including SPG grading, performance monitoring, and comparison of the SPG binder grades to actual field performance. Factors included in the experimental design were binder type and suppliers, environment, aggregates, and traffic. Analyses of the results showed that there is generally a good correlation between the proposed SPG specification and actual field performance. Overall, the results are indicative that the SPG specification is functional and if properly applied, the specification promises to be a relatively cost-effective method for selecting binders to ensure adequate surface treatment performance. However, further validation is recommended, possibly with controlled test sections to fully investigate the effects of design, construction, and quality control processes and address some of the deficiencies of the specification.
Download or read book Validation of Surface Performance graded Specification for Surface Treatment Binders written by Aishwarya Vijaykumar and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The design and selection of surface treatment binders in service is currently based on specifications that only account for the penetration and ductility of emulsion residues or the penetration and viscosity of hot-applied asphalt cements. These specifications consider neither the entire range of temperatures that the binders may be subjected to during production and in service, nor long-term aging behavior. A surface performance-graded (SPG) specification for the selection of surface treatment binders was developed as part of previous Texas Department of Transportation (TxDOT) and National Cooperative Highway Research Program (NCHRP) projects. The work performed under the TxDOT Project 0-6616 was the basis for this thesis. In this project, the SPG specification, which is performance-based and takes into account the physical properties of the binder at the temperature ranges in which the material will be used, was further validated. This was accomplished by standardizing the emulsion residue recovery method through the evaluation of two warm oven methods, exploring the exclusive use of the dynamic shear rheometer (DSR) for determining performance-based properties, and further field validating the thresholds for these properties. The laboratory and field results were used to revise the SPG specification for surface treatment binders in service. Binder samples collected from chip seal projects constructed on selected highway sections in Texas in summer 2011 were tested and graded according to the existing SPG specification developed in previous research projects. Two warm oven emulsion residue recovery methods were used and compared. New DSR tests, including the multiple stress creep recovery (MSCR) test and the frequency sweep test were evaluated for developing additional criteria in the SPG specification. The SPG grades of the surface binder samples evaluated from laboratory tests were compared with the actual field performance of the highway sections one year after construction. The SPG specification was found to be functional in terms of enabling the selection of binders to ensure adequate surface treatment performance. Moreover, the results obtained from the MSCR and DSR frequency sweep tests were compared with field performance to develop additional criteria in the specification. Further validation is recommended to investigate the effects of construction and quality control processes, as this study is limited to producing a revised SPG specification for properties that address stiffness and aggregate retention in service.
Download or read book Transportation Research Record written by and published by . This book was released on 2004 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Manual for Emulsion based Chip Seals for Pavement Preservation written by Scott Shuler and published by Transportation Research Board. This book was released on 2011 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB's National Cooperative Highway Research Program (NCHRP) Report 680: Manual for Emulsion-Based Chip Seals for Pavement Preservation examines factors affecting chip performance, highlights design and construction considerations, and explores procedures for selecting the appropriate chip seal materials. The report also contains suggested test methods for use in the design and quality control of chip seals. Appendices A to J of NCHRP Report 680 provide further elaboration on the work performed in this project--
Download or read book Statewide Implementation of the Surface Performance graded SPG Specification for Seal Coat Binders in Service Products P1 P4 P5 written by and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This project includes three documents. (1) Seal Coat Binder Performance Specifications, 87th Annual Transportation Short Course, October 2013, 3p., PowerPoint slides covering objective, history, recommended Surface Performance Grading (SPG) specification, and implementation project. (2) SPG Specification for 2015 Implementation, 8p. (3) Texas Seal Coat Binder Utilization maps for 2013 and 2014, 4p.
Download or read book Superpave Mix Design written by Asphalt Institute and published by . This book was released on 2001-01-01 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Asphalt Materials Science and Technology written by James G. Speight and published by Butterworth-Heinemann. This book was released on 2015-10-01 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: Asphalt is a complex but popular civil engineering material. Design engineers must understand these complexities in order to optimize its use. Whether or not it is used to pave a busy highway, waterproof a rooftop or smooth out an airport runway, Asphalt Materials Science and Technology acquaints engineers with the issues and technologies surrounding the proper selection and uses of asphalts. With this book in hand, researchers and engineering will find a valuable guide to the production, use and environmental aspect of asphalt. Covers the Nomenclature and Terminology for Asphalt including: Performance Graded (PG) Binders, Asphalt Cement (AC), Asphalt-Rubber (A-R) Binder, Asphalt Emulsion and Cutback Asphalt Includes Material Selection Considerations, Testing, and applications Biodegradation of Asphalt and environmental aspects of asphalt use
Download or read book Statewide Implementation of the Surface Performance Graded SPG Specification for Chip Seal Binders in Service written by Amy Epps Martin and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past almost 20 years, a Surface Performance-Graded (SPG) specification for chip seal binders was developed and validated using laboratory measurements and visual field performance of 141 highway sections. This SPG specification was established in an effort to extend the service life of chip seals and save approximately $9 million per year by providing a binder grading system and associated selection guidelines that: (1) accounts for differences in climate and (2) uses existing equipment and performance-based properties that preclude bleeding and aggregate loss in the critical first year of service after construction. This report documents a multi-year implementation effort that includes: (1) further validation and (2) industry interaction including outreach, state round robin testing programs, laboratory characterization efforts with private laboratories, and associated work with a national task force. The SPG specification now available as a special provision to Texas Department of Transportation (TxDOT) Item 300 (SP 300-011) will replace the TxDOT Chip Seal Binder Material Selection Table with the tiered system and conventional chip seal binder specifications for materials in service provided in TxDOT Item 300.
Download or read book Green and Intelligent Technologies for Sustainable and Smart Asphalt Pavements written by Xueyan Liu and published by CRC Press. This book was released on 2021-12-24 with total page 825 pages. Available in PDF, EPUB and Kindle. Book excerpt: Green and Intelligent Technologies for Sustainable and Smart Asphalt Pavements contains 124 papers from 14 different countries which were presented at the 5th International Symposium on Frontiers of Road and Airport Engineering (IFRAE 2021, Delft, the Netherlands, 12-14 July 2021). The contributions focus on research in the areas of "Circular, Sustainable and Smart Airport and Highway Pavement" and collects the state-of-the-art and state-of-practice areas of long-life and circular materials for sustainable, cost-effective smart airport and highway pavement design and construction. The main areas covered by the book include: • Green and sustainable pavement materials • Recycling technology • Warm & cold mix asphalt materials • Functional pavement design • Self-healing pavement materials • Eco-efficiency pavement materials • Pavement preservation, maintenance and rehabilitation • Smart pavement materials and structures • Safety technology for smart roads • Pavement monitoring and big data analysis • Role of transportation engineering in future pavements Green and Intelligent Technologies for Sustainable and Smart Asphalt Pavements aims at researchers, practitioners, and administrators interested in new materials and innovative technologies for achieving sustainable and renewable pavement materials and design methods, and for those involved or working in the broader field of pavement engineering.
Download or read book Standard Specifications for Highway and Structure Construction written by Wisconsin. Department of Transportation and published by . This book was released on 1998 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environment Friendly Construction Materials written by Shaopeng Wu and published by MDPI. This book was released on 2019-06-20 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Construction materials are the most widely used materials for civil infrastructure in our daily lives. However, from an environmental point of view, they consume a huge amount of natural resources and generate the majority of greenhouse gasses. Therefore, many new and novel technologies for designing environmentally friendly construction materials have been developed recently. This Special Issue, “Environment-Friendly Construction Materials”, has been proposed and organized as a means to present recent developments in the field of construction materials. It covers a wide range of selected topics on construction materials.
Download or read book Maintenance and Preservation 2013 written by and published by . This book was released on 2013 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: "TRB's Transportation Research Record: Journal of the Transportation Research Board, No. 2360 contains 10 papers that study holistic approaches to maintenance and preservation of transportation infrastructure; guidelines for thermographic inspection of concrete bridge components in shaded conditions; bridge preservation by action type; fatigue testing and structural health monitoring of retrofitted web stiffeners on steel highway bridges; and, vulnerability of bridges exposed to scour. This issue also examines performance measures for bridge preservation; risk modeling of advanced deterioration in bridge management systems; modeling hurricane hazards and damage on Florida bridges; developing bridge management components that facilitate decision making; and, a method to assess bonding characteristics of membrane layers in wearing course on orthotropic steel bridge decks."--Pub. online blurb.
Download or read book Toward Statewide Implementation of the Surface Performance Graded Specification for Chip Seal Binders written by Shi Chang and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past 15 years, a surface performance-graded (SPG) specification for chip seal binders was developed by the Texas Department of Transportation (TxDOT) using laboratory measurements and visual field performance (aggregate loss and bleeding) of 75 highway sections (HSs). The SPG was established in an effort to extend the service life of chip seals by providing a binder selection method that accounts for differences in climate. TxDOT recently commenced a statewide implementation effort of the SPG specification. The initial activities include (a) reviewing laboratory and field performance of HSs built in 2011 based on the latest version of the SPG specification, newly generated SPG requirement map, and revised surface condition index calculation; (b) characterizing binders from HSs built in 2013 and monitoring their field performance; (c) proposing additional parameters to complement the SPG specification; and (d) predicting bending beam rheometer (BBR) creep stiffness values from frequency sweep results. When comparing the expected performance of the binders (based on their SPG grade) against actual field performance after the first year in service, 80 percent of the HSs built in 2011 correlated well. Individual SPG properties were compared to corresponding field performance for 2013 chip seal binders in terms of aggregate loss or bleeding. Unexpected field performance from the Amarillo District largely contributed to poor correlation between the BBR creep stiffness properties and field performance in terms of aggregate loss for 2013 HSs. A phase angle parameter was introduced in the SPG specification to ensure modified binders contain sufficient polymers. The prediction of BBR creep stiffness values via a frequency sweep test was not reliable at colder temperatures, even when a 4-mm dynamic shear rheometer plate test was used. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/155717
Download or read book Chip Seals for Asphalt Concrete Pavements written by Denise Hoyt and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Chip seals are a pavement surface treatment used for maintaining asphalt concrete pavements. National Cooperative Highway Research Program (NCHRP) Project 14-17 was performed to produce a national Chip Seal Manual which would consolidate the best chip seal engineering practices. A subcontract to NCHRP Project 14-17 performed at Texas A & M University was the basis for this thesis. It included the following tasks: investigation of a testing and grading system for grading asphalt binder residues from chip seal emulsions; and investigation of texture measurement methods for assessing existing pavement macrotexture before a chip seal is placed. The performance graded (PG) asphalt binder specification, which was developed to characterize asphalt binder properties related to the performance of hot mix asphalt concrete in pavements, cannot be directly applied to asphalt binders or emulsion residues for use in chip seals. Therefore, the surface performance graded (SPG) specification was developed using the same equipment as the PG system but with some procedural modifications and different limiting values for the test parameters. NCHRP Project 14-17 utilized the PG and SPG systems to grade base asphalt binders and recovered emulsion residues. Two emulsion residue recovery methods were compared: hot oven evaporation with nitrogen blanket and stirred can with nitrogen purge. The PG and SPG grades were found to be similar for the two emulsion residue recovery methods but slightly different from the base asphalt binder. A strawman specification for emulsion residues in chip seals was recommended for use with the stirred can recovery method. In chip seal construction, macrotexture of the existing pavement affects the rate at which chip seal emulsion must be applied. In this project, existing pavement macrotextures were measured at three chip seal projects immediately before construction using both the sand patch test and the circular track meter, CT Meter. The CT Meter was found to quickly and effectively measure pavement macrotexture. The CT Meter measurements correlated well with the sand patch test measurements. Finally, this project investigated the utility of measuring pavement macrotexture in the laboratory using the aggregate imaging system (AIMS) on pavement cores and on small samples cut from fabricated slabs. Statistical analyses showed good correlation between the mean profile depth, MPD, calculated from AIMS measurements on pavement cores and small samples, based on analysis using 50 mm (2 inch) segment lengths, and the MPD measured on the pavement or on the large fabricated slabs with the CTMeter. These results supported the use of AIMS to measure pavement macrotexture using small samples in the laboratory.
Download or read book Asphalt Pavements written by Patrick Lavin and published by CRC Press. This book was released on 2003-09-02 with total page 463 pages. Available in PDF, EPUB and Kindle. Book excerpt: Asphalt Pavements provides the know-how behind the design, production and maintenance of asphalt pavements and parking lots. Incorporating the latest technology, this book is the first to focus primarily on the design, production and maintenance of low-volume roads and parking areas. Special attention is given to determining the traffic capacity, required thickness and asphalt mixture type for parking applications. Topics covered include: material information such as binder properties, testing grading and selection; construction information such as mixing plant operation, proportioning, mixture placement and compaction; and design information such as thickness and mixture design methods and guidelines on applying these to highways, city streets and parking Areas. It is an essential practical guide aimed at those engineers and architects who are not directly involved in the asphalt industry, but who nonetheless need to have a good general knowledge of the subject. Asphalt Pavements provides a novice with enough information to completely design, construct and specify an asphalt pavement.
Download or read book An Introduction to Recycled Tire Rubber for Pavements for Professional Engineers written by J. Paul Guyer and published by Guyer Partners. This book was released on 2023-01-28 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introductory technical guidance for civil engineers, highway engineers and construction managers interested in use of recycled tire rubber in asphalt concrete pavement for streets and highways. Here is what is discussed: 1. BACKGROUND, 2. SPECIFICATIONS AND TESTING OF GTR-MODIFIED ASPHALT BINDERS, 3. ASPHALT MIXTURE CONSIDERATIONS, 4. DISCUSSION., 5. SUMMARY, 6. REFERENCES, 7. GLOSSARY OF TERMS.
