Polymerized Crumb Rubber Modified Mixtures in Minnesota
Polymerized Crumb Rubber Modified Mixtures in Minnesota

Author:

Publisher:

Published: 1994

Total Pages: 198

ISBN-13:

DOWNLOAD EBOOK

This research program was based on laboratory and field studies. All work was limited to the use of a 10-mesh crumb rubber in the dry process. An evaluation of the asphalt-rubber interactions indicated that there should be a reasonable level of interaction between the crumb rubber and the asphalt cement selected for the project. A suggested criterion for defining an acceptable level of interaction would be to establish a minimum viscosity of 15 Poise (Brookfield viscosity) for a neat asphalt cement modified with 20% crumb rubber. When designing a crumb rubber modified mixture, the aggregate gradation should be substantially gapped. The target gradation used in the construction of the Babbit, Minnesota test sections should be adjusted for crumb rubber gradations volumetrically; generally, 1 gram of crumb rubber occupies the same volume as 3 grams of aggregate for a given sieve size. The optimum asphalt content for crumb rubber mixtures should be based on air voids from 1.5 to 3%.

Mixture Desigh [sic] and Performance Prediction of Rubber-modified Asphalt in Ohio
Mixture Desigh [sic] and Performance Prediction of Rubber-modified Asphalt in Ohio

Author: Robert Y. Liang

Publisher:

Published: 1998

Total Pages: 278

ISBN-13:

DOWNLOAD EBOOK

The mixture design and performance characteristics of crumb rubber modified asphalt concretes were investigated in this research project to meet the requirements of the Intermodal Surface Transportation Efficiency Act (ISTEA) of 1991, which has required each State to incorporate scrap tire rubber into its asphalt paving materials. Specifically, the objectives of this research encompass the following: (i) investigation of the rheological properties of asphalt-rubber binder to determine optimum content of crumb rubber; (ii) development of optimum mix design for various applications, including both wet and dry mix processes; (iii) characterization of mechanical properties of recommended paving mixtures, including resilient modulus, fatigue cracking behavior, low-temperature thermal cracking resistance, water sensitivity test, incremental creep test and loaded wheel track test; and (iv) comparison of performance of selected paving mixes.

Modified Asphalt
Modified Asphalt

Author: Jose Luis Rivera Armenta

Publisher: BoD – Books on Demand

Published: 2018-09-19

Total Pages: 142

ISBN-13: 1789237262

DOWNLOAD EBOOK

Asphalt modification is an important area in the development of new road and pavement materials. There is an urgent demand for road materials that can minimize fracture at low temperatures and increase resistance to deformation at high temperatures. The function of asphalt is to bind aggregate to protect it from water and other harmful agents. In the beginning asphalt was ideal for this purpose, but recently traffic loads have increased and environmental factors have deteriorated more rapidly than before. Asphalt is a byproduct of crude oil in the refining process, and it is considered a complex heterogeneous mixture of hydrocarbons. Asphalt modification has become an important research area, using several methods and new materials as modifiers.

Uses of Recycled Rubber Tires in Highways
Uses of Recycled Rubber Tires in Highways

Author: Jon A. Epps

Publisher: Transportation Research Board

Published: 1994

Total Pages: 172

ISBN-13: 9780309053235

DOWNLOAD EBOOK

This synthesis on the use of recycled rubber tires in highways will be of interest to administrators and policy-makers; pavement, materials, geotechnical, environmental, and traffic operations engineers; and research engineers involved with highway design and construction issues. Information is provided on the uses of rubber tires in asphalt paving materials as well as other uses, such as on fills and embankments, for erosion control and on railroad grade crossings. Specifically, information is included which identifies the agencies using or implementing applications for recycled rubber tires and defines the design parameters, technical and construction limitations, performance, costs, benefits, environmental limitations, specifications, and availability. This synthesis of information defines the use of recycled rubber tires in highways and is based on a review of nearly 500 references and on information recorded from state highway agency responses to a 1991 survey of practice. Updates are included for as much of the state practice information possible through 1993. The use of scrap tires for highway applications is dynamic with regard to policy and technical issues. Therefore, the reader should keep in mind that the information presented reflects the best available data at a particular time. The synthesis also identifies current research in the topic area, critical research needs, and legislative issues that affect application and use of recycled rubber tires.

Asphalt and Asphalt Mixtures
Asphalt and Asphalt Mixtures

Author: Haitao Zhang

Publisher: BoD – Books on Demand

Published: 2019-12-11

Total Pages: 132

ISBN-13: 1789847680

DOWNLOAD EBOOK

In recent years, with the rapid development of the world transportation industry, the proportion of asphalt pavement in road engineering is increasing. Therefore, while the demand for asphalt and asphalt mixture is increasing, the quality requirements for materials are also improving. In particular, new materials and new technologies are constantly emerging, and the application technology, theory, and technical specifications of asphalt materials have made great progress.

Asphalt Paving Technology
Asphalt Paving Technology

Author: Carl L. Monismith

Publisher: McGraw-Hill Companies

Published: 1997-06

Total Pages: 480

ISBN-13: 9780070429833

DOWNLOAD EBOOK

Focusing on asphalt paving technology, this work emphasizes quality control and quality assurance programmes in producing high-quality pavements. It combines theory and practice of asphalt paving including developments and information from the recently completed Strategic Highway Research Program which was designed to improve asphalt specifications, mix design and analysis systems.