Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 36
Book Description
Effect of Crumb Rubber Modifiers (CRM) on Performance Related Properties of Asphalt Binders
Author: High-Temperature Viscosity Performance of Crumb-Rubber-Modified Binder With Warm Mix Asphalt Additives
Author: Hainian WangPublisher:
ISBN:
Category : Crumb-rubber modifier
Languages : en
Pages : 10
Book Description
The application of crumb-rubber modifier (CRM) in asphalt mixtures has been proven to increase the viscosity of CRM binders. In recent years, warm mix asphalt (WMA) additives have been employed to CRM binders to lower their viscosity at high temperatures, allowing a decrease in the mixing and compaction temperatures. The objective of this research is to investigate the viscosity and storage stability of rubberized WMA binders with different tire rubber concentrations and WMA additives. The tire rubber of 40-mesh, with concentrations of 10 %, 15 %, 20 %, and 25 % by weight of a Superpave performance grade (PG) 64-22 asphalt binder, were used in this study along with the WMA additives, such as Sasobit, RH and Advera. Viscosity tests were conducted on the rubberized WMA binders using the rotational viscometer at four temperatures (135, 160, 177, and 190°C). The statistical analysis of variance (ANOVA) was applied to quantify the respective effects of the influencing factors on the CRM binder's viscosity. The test results indicated that the addition of crumb rubber could greatly increase the viscosity of asphalt binders, which could be improved continuously at increased crumb-rubber concentrations. However, when considering different WMA additives, the crumb rubber showed different effects on the viscosity of the binder. The three WMA additives could all reduce the viscosity of the CRM binder; in addition, RH had the most significant effect on viscosity reduction. It was also found that the CRM binders with WMA additives had good storage stability. For example, the viscosity of the CRM binder with 10 % rubber concentration and RH only increased by 3.8 % after being stored for 4.5 h.
Characterization of Simple and Complex Crumb Rubber Modified Binders
Author: Ssu-Wei LohPublisher:
ISBN:
Category : Pavements, Asphalt
Languages : en
Pages : 220
Book Description
Evaluating the Effects of Crumb Rubber Modifier (CRM) Modified Asphalt and Dry Added Treated CRM on Performance Characteristics of RAP Mixtures
Author: Polymer Modified Bitumen
Author: Tony McNallyPublisher: Elsevier
ISBN: 085709372X
Category : Technology & Engineering
Languages : en
Pages : 417
Book Description
The addition of polymers to bitumen allows the modification of certain physical properties, such as softening point, brittleness and ductility, of the bitumen. Polymer modified bitumen: Properties and characterisation provides a valuable and in-depth coverage of the science and technology of polymer modified bitumen. After an initial introduction to bitumen and polymer modified bitumen, the book is divided into two parts. Chapters in part one focus on the preparation and properties of a range of polymer modified bitumen, including polymer bitumen emulsions, modification of bitumen with poly (urethanes), waste rubber and plastic and polypropylene fibres. Part two addresses the characterisation and properties of polymer modified bitumen. Chapter topics covered include rheology, simulated and actual long term ageing studies; the solubility of bituminous binders in fuels and the use of Fourier transform infrared spectroscopy to study ageing/oxidation of polymer modified bitumen. Polymer modified bitumen is an essential reference for scientists and engineers, from both academia and the civil engineering and transport industries, interested in the properties and characterisation of polymer modified bitumen. Provides a comprehensive and in-depth coverage of the science and technology of polymer modified bitumen Focuses on the preparation and properties of a range of polymer modified bitumen, including emulsions, modification of bitumen with poly(urethanes), waste rubber and plastic as well as polypropylene fibres Addresses the characterization and properties of polymer modified bitumen, including rheology, simulated and actual long term ageing studies, and the solubility of bituminous binders in fuels
Evaluating the Effects of the Wet and Dry Processes for Including Crumb Rubber Modifier in Hot Mix Asphalt
Author: Mark S. BuncherPublisher:
ISBN:
Category : Asphalt concrete
Languages : en
Pages : 316
Book Description
Design and Construction of Asphalt Paving Materials with Crumb Rubber Modifier
Author: Publisher:
ISBN:
Category : Pavements, Asphalt
Languages : en
Pages : 128
Book Description
This document is a comprehensive overview of the terminology, processes, products, and applications of crumb rubber modifier (CRM) technology. This technology includes any use of scrap tire rubber in asphalt paving materials. In general, CRM technology can be divided into two categories--the wet process and the dry process. When CRM is incorporated into an asphalt paving material, it will modify the properties of the binder (asphalt rubber) and/or act as a rubber aggregate (rubber modified hot mix asphalt). The five concepts for using CRM discussed in the report are McDonald, PlusRide, generic dry, chunk rubber asphalt concrete, and continuous blending asphalt rubber. An experimental work plan for monitoring performance and a stack emission testing program are also included.
The Effect of Crumb Rubber Modifier to the Properties and Rheological Behaviour of Asphalt Binder
Author: Nuha S. MashaanPublisher:
ISBN:
Category : Asphalt
Languages : en
Pages : 386
Book Description
Characteristics of Asphalt Binders
Author: Advanced Characterization of Crumb Rubber Modified Asphalts Using Protocols Developed for Complex Binders
Author: Sohee Kim (Research assistant)Publisher:
ISBN:
Category :
Languages : en
Pages : 270
Book Description