Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The report documents the laboratory evaluation of rubber modified asphalt concrete, marketed as 'Plus Ride.' The material is produced by substituting rubber particles for some of the aggregate in a standard asphalt concrete mix. Gap-grading of the aggregate is necessary to allow room for these rubber particles. The study revealed several problems with testing this mix in the laboratory: swelling of the mix, mix sticking to the molds, and problems compacting the mix. A loaded cooling cycle, silicon grease, and a kneader compactor were used to mitigate these problems. The optimum rubber-asphalt design required 2% more asphalt cement than the standard mix. Even immersion-compression results may not be applicable because of the low compression strengths. CDOH design and testing equipment is not adequate to evaluate the performance of the 'Plus Ride' material. Based on discussion with other states and review of the projects in Colorado, the use of this material is not recommended.
The report documents the laboratory evaluation of rubber modified asphalt concrete, marketed as 'Plus Ride.' The material is produced by substituting rubber particles for some of the aggregate in a standard asphalt concrete mix. Gap-grading of the aggregate is necessary to allow room for these rubber particles. The study revealed several problems with testing this mix in the laboratory: swelling of the mix, mix sticking to the molds, and problems compacting the mix. A loaded cooling cycle, silicon grease, and a kneader compactor were used to mitigate these problems. The optimum rubber-asphalt design required 2% more asphalt cement than the standard mix. Even immersion-compression results may not be applicable because of the low compression strengths. CDOH design and testing equipment is not adequate to evaluate the performance of the 'Plus Ride' material. Based on discussion with other states and review of the projects in Colorado, the use of this material is not recommended.
Rubber Modified Asphalt Concrete
R. F. LaForce (Autor:in)
1987
26 pages
Report
Keine Angabe
Englisch
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