Development of anti-icing asphalt pavements using rubber particles Sato, Katsuhisa ; Hori, Hiroaki
Språk: Engelska Språk: Franska Serie: ; topicVI-90Utgivningsinformation: XIth international winter road congress 2002, Sapporo [Japan] / XIe congres international de la viabilite hivernale 2002, Sapporo [Japon]. Paper, 2002Beskrivning: 9 sÄmnen: Bibl.nr: VTI 2002.0071Location: Abstrakt: After the use of stud tires was prohibited in 1991 in Japan, various types of frozen control pavement have been studied and developed to ensure traffic safety in winter. We have developed three types of asphalt surface course containing rubber particles which have an anti-icing function: (1) Gap-graded mixture with rubber particles; (2) Ultra-thin surfacing of asphalt mastic with rubber particles (RA mastic); and (3) Open-graded mixture with rubber particles. The ice debonding mechanism of asphalt mixtures containing rubber particles was examined by means of model experiments, photoelastic experiments, and finite element model analysis. The ice breaking effect of rubber particles was clarified from the results of these examinations. Through laboratory tests, plant production tests and small field tests, rational mixture components, plant production methods and paving construction methods were considered and determined for the developed asphalt mixtures. The determined gap-graded mixture usually consists of gap-graded aggregates, rubber particles (about 2-4 per cent mass), filler and polymer modified asphalt. RA mastic is an asphalt mastic which consists of a large amount of rubber particles (20-30 per cent mass), filler and polymer modified asphalt. The open-graded mixture is a porous asphalt having an elastic property due to the rubber particles contained in it. This mixture consists of open-graded aggregates, rubber particles (about 1 per cent mass), filler and polymer modified asphalt. In this open-graded mixture case, some rubber particles are sometimes spread and adhered to the surface course in addition to the inside rubber particles. These three methods were tested on some actual roads and the ice debonding effect was observed during winter. It was confirmed that the developed methods using rubber particles in surface mixtures have excellent ice breaking effect. Based on the results of the field trials, these three methods are now in practical use. In this paper, we describe the concepts of the methods and the ice debonding mechanism of asphalt mixtures with rubber particles, and discuss the results of laboratory tests, plant production tests and small field tests, and the performance of the three developed methods when tested on actual roads. Finally, we outline the possibility of the developed methods for anti-icing pavements.Aktuellt bibliotek | Status | |
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Statens väg- och transportforskningsinstitut | Tillgänglig |
After the use of stud tires was prohibited in 1991 in Japan, various types of frozen control pavement have been studied and developed to ensure traffic safety in winter. We have developed three types of asphalt surface course containing rubber particles which have an anti-icing function: (1) Gap-graded mixture with rubber particles; (2) Ultra-thin surfacing of asphalt mastic with rubber particles (RA mastic); and (3) Open-graded mixture with rubber particles. The ice debonding mechanism of asphalt mixtures containing rubber particles was examined by means of model experiments, photoelastic experiments, and finite element model analysis. The ice breaking effect of rubber particles was clarified from the results of these examinations. Through laboratory tests, plant production tests and small field tests, rational mixture components, plant production methods and paving construction methods were considered and determined for the developed asphalt mixtures. The determined gap-graded mixture usually consists of gap-graded aggregates, rubber particles (about 2-4 per cent mass), filler and polymer modified asphalt. RA mastic is an asphalt mastic which consists of a large amount of rubber particles (20-30 per cent mass), filler and polymer modified asphalt. The open-graded mixture is a porous asphalt having an elastic property due to the rubber particles contained in it. This mixture consists of open-graded aggregates, rubber particles (about 1 per cent mass), filler and polymer modified asphalt. In this open-graded mixture case, some rubber particles are sometimes spread and adhered to the surface course in addition to the inside rubber particles. These three methods were tested on some actual roads and the ice debonding effect was observed during winter. It was confirmed that the developed methods using rubber particles in surface mixtures have excellent ice breaking effect. Based on the results of the field trials, these three methods are now in practical use. In this paper, we describe the concepts of the methods and the ice debonding mechanism of asphalt mixtures with rubber particles, and discuss the results of laboratory tests, plant production tests and small field tests, and the performance of the three developed methods when tested on actual roads. Finally, we outline the possibility of the developed methods for anti-icing pavements.