Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Properties and Ageing of Crumb Rubber Modified Bitumens
The issue of reusing waste materials is becoming very current and also includes reusing used tires. One of the possibilities is using these tires for the production of crumb rubber, which is added as a modifying agent into paving bitumens. The paper compares properties of this special type of asphalt binder with properties of conventional binders. In order to test the rheological properties, needle penetration, softening point, dynamic viscosity, resilience and elastic recovery tests were performed. Emphasis was put on description of rheological behavior determined using dynamic shear rheometer with the effects of ageing assessed using RTFOT method. It was found that crumb rubber modified bitumens have a higher stiffness in comparison to both paving and polymer modified bitumens. Ageing of crumb rubber modified bitumens led to an increase of complex shear moduli and decrease of phase angles. Increasing the crumb rubber content in bitumen leads to smaller increase of complex shear modulus due to ageing. It demonstrates higher resistance against ageing.
Properties and Ageing of Crumb Rubber Modified Bitumens
The issue of reusing waste materials is becoming very current and also includes reusing used tires. One of the possibilities is using these tires for the production of crumb rubber, which is added as a modifying agent into paving bitumens. The paper compares properties of this special type of asphalt binder with properties of conventional binders. In order to test the rheological properties, needle penetration, softening point, dynamic viscosity, resilience and elastic recovery tests were performed. Emphasis was put on description of rheological behavior determined using dynamic shear rheometer with the effects of ageing assessed using RTFOT method. It was found that crumb rubber modified bitumens have a higher stiffness in comparison to both paving and polymer modified bitumens. Ageing of crumb rubber modified bitumens led to an increase of complex shear moduli and decrease of phase angles. Increasing the crumb rubber content in bitumen leads to smaller increase of complex shear modulus due to ageing. It demonstrates higher resistance against ageing.
Properties and Ageing of Crumb Rubber Modified Bitumens
Key Engineering Materials ; 737 ; 535-540
12.06.2017
6 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Evaluation of the Cohesion of Crumb Rubber Modified Bitumens by Means of UCL Method
| Taylor & Francis Verlag | 2009
Ageing Performances of Asphaltite Modified Bitumens; Comparisons with Equivalent Petroleum Bitumens
| Springer Verlag | 2015
Ageing of Crumb Rubber Modified Bituminous Binders under Real Service Conditions
| DOAJ | 2022