Accelerated Loading Performance and Laboratory Characterization of Crumb Rubber Asphalt Pavements

Mohammad, Louay N.; Huang, Baoshan; Roberts, F L

doi:10.1080/14680629.2000.12067156

Cited by 18 publications

(6 citation statements)

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“…Generally, there are several researches which primarily focuses on the physical properties, chemical properties, engineering designs and constructability, has identified several promising uses for these wastes (Hamid,2008;Blow, 1971;green,1977;Harvey,2000;Heitzman,1992;Kaloush, 2003;Mohammad, 2000;Hozayen,2008).…”

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confidence: 98%

Evaluation of Crumb Tire Rubber-Modified Hot Mix Asphalt Concrete in Sudan

Osman

Adam²

2012

Sustainable Construction Materials 2012

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Scrap tires form a major part of the world's solid waste management problem. In recent years, the waste tire problem has become so acute that there is an urgent need to find an optimum and effective way to use scrap tires in asphalt mixtures. This paper investigates used tire rubber as an asphalt modifier and its potential prospects to enhance bitumen physical and asphalt mixture properties in hot climate like Sudan. Bitumen grade 60/70 blended with different percentage of crumb used tire rubber. Engineering and physical properties of bitumen and bitumen/rubber mortar were evaluated. Marshall Mix was designed and used to evaluate the bituminous mixtures properties. An extensive laboratory studies and tests have been done to evaluate the effect of crumb tire rubber on bitumen and bituminous mixture concrete. The laboratory results indicated that crumb rubber modifier provides better engineering properties in terms of rheological properties, penetration, softening point, specific gravity flash and fire point tests and indicated that crumb rubber modifier decrease the stability and density, increase the flow, and slightly increase the air voids and the voids of mineral aggregate. The study recommended that further studies should be conducted in mixing time and temperatures as well as a field test on rubberized constructed section.

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confidence: 98%

Evaluation of Crumb Tire Rubber-Modified Hot Mix Asphalt Concrete in Sudan

Osman

Adam²

2012

Sustainable Construction Materials 2012

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“…The use of binders modified with rubber started in the 1940's (Mohammad et al, 2000). However, only in the 1960's the process of manufacturing asphalt-rubber known as wet process or McDonald process was developed and patented by Engineer Charles McDonald.…”

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confidence: 99%

Influence of Crumb Rubber and Digestion Time on the Asphalt Rubber Binders

Neto¹,

Farias²,

Pais³

et al. 2006

Road Materials and Pavement Design

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The behavior of asphalt binders modified with recycled crumb rubber depends on several factors, such as: rubber content and type, temperature and time employed during the digestion process. Some of these aspects are investigated in this paper by means of a series of tests performed on asphalt-rubber produced via the wet process. Crumb rubber manufactured by ambient grinding and cryogenic processes were used in this work. Reduction of penetration and sharp increase of viscosity, softening point and resilience were observed for increasing rubber contents. The results show that the Brookfield viscosity limits the crumb rubber content incorporated into straight binder, once it tends to become too high above a certain critical amount of incorporated rubber. The effect of digestion time on the viscosity of the modified binders depended in this research on the rubber content. For high rubber contents, there seems to exist a critical time after which viscosity tends to decrease for continuing digestion process. A rubber-binder interaction model, which could explain such results, is proposed. The influence of rubber type occurred especially in terms of Brookfield viscosity and softening point. It was observed a decrease in these properties for the asphaltrubber binders produced with crumb rubber obtained by cryogenic process in relation to those produced by the grinding process.

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“…As a result of rubber particles swelling, the distances between particles decreases, by which binder viscosity is increased up to a factor of 10 [4], [6], [7], [8]. The studies on rubber modified binder and mixtures have revealed the improvement in the properties such as rutting resistance, and fatigue, thermal and reflective cracking resistance [9]- [13].…”

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confidence: 99%

Investigating the Effects of Using Waste Rubber and Polyethylene Terephthalate (PET) on Mechanical Properties of Asphalt Concrete

Taherkhani¹,

Arshadi²

2018

IJESD

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Scrap tires and plastics are among the main solid wastes generated in large amount throughout the world. Polyethylene Terephthalate (PET) is the most consumed and wasted plastic. In this study the effects of PET particles size and content on some engineering properties of asphalt concrete containing rubber modified asphalt has been investigated. Different concentrations of waste PET including, 0, 2, 4, 6, 8 and 10% (by the weight of binder) in two different ranges of size were to asphalt concrete and the Marshall stability, Marshall quotient, indirect tensile strength (ITS) and uniaxial dynamic creep properties were evaluated. Results show that the Marshall stability and Marshall quotient increase with increasing PET content. The indirect tensile strength (ITS) test results show that the highest ITS is obtained by adding 2% of PET into the mixtures and beyond that the ITS decreases with increasing PET content. Dynamic creep test results revealed that the resistance against permanent deformation decreases with increasing PET content. However, the mixture containing fine graded PET particles has more resistance against permanent deformation than the mixture containing coarse graded PET particles. Comparing the results on the rubber modified mixtures in this research with those on conventional mixtures accomplished previously reveals that the trend is different.

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Accelerated Loading Performance and Laboratory Characterization of Crumb Rubber Asphalt Pavements

Cited by 18 publications

References 0 publications

Evaluation of Crumb Tire Rubber-Modified Hot Mix Asphalt Concrete in Sudan

Evaluation of Crumb Tire Rubber-Modified Hot Mix Asphalt Concrete in Sudan

Influence of Crumb Rubber and Digestion Time on the Asphalt Rubber Binders

Investigating the Effects of Using Waste Rubber and Polyethylene Terephthalate (PET) on Mechanical Properties of Asphalt Concrete

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