Use of crumb rubber in lieu of binder grade bumping for mixtures with high percentage of reclaimed asphalt pavement

Kocak, Salih; Kutay, M. Emin

doi:10.1080/14680629.2016.1142466

Cited by 19 publications

(9 citation statements)

References 6 publications

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“…Kocak et al [23] explored the possibility of the use of Crumb Rubber Modified Binders as an alternative to the conventional high priced grade binders in mixtures consisting of high percentages of RAP. Appaiah et al [5] studied the effects of inclusion of thermoplastic modifiers like High density Poly Ethylene and Polypropylene to conventional bitumen.…”

Section: Literature Reviewmentioning

confidence: 99%

Utilizing different wastes in rural roads of Karad, District – Satara, India

Chandak*,

Tapase,

Patil

et al. 2019

IJITEE

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of the naturally available soil was studied for the rural roads in Karad. The California bearing ratio test analysis and their outcomes were employed to assess the strength of the subgrade in the study area. Further, based on the suitability of identified wastes in bituminous layer, IITPave software was used to analyze the performance of rural roads of the study area. Using the IITPave software, design charts were created based on utilizing the wastes for rural roads in Karad, District -Satara, India.

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Section: Literature Reviewmentioning

confidence: 99%

Utilizing different wastes in rural roads of Karad, District – Satara, India

Chandak*,

Tapase,

Patil

et al. 2019

IJITEE

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“…Based on the amount of heavy oil consumed and the emissions coefficient of heavy oil combustion, the emissions generated by fuel consumption can be obtained. Using Equation (11), the amount of harmful gas emissions produced by the different CRMA mixtures was calculated. Table 12 lists the gases produced by heavy oil combustion.…”

Section: List Of Gases Released During Fuel Combustionmentioning

confidence: 99%

“…In road pavement construction, waste-tire rubber can serve as an asphalt modifier after being grinded and purified, which has been proved to be an effective polymer for asphalt modification. The incorporation of rubber powder not only can improve the high temperature rheological performances of rubberized binders [10], but also can enhance CRMA anti-fatigue and anti-cracking performance [11]. Different types of rubber sources and rubber types can be used to modify different types of base asphalt to obtain excellent high temperature rheological properties and short-term aging properties [11].…”

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confidence: 99%

“…The incorporation of rubber powder not only can improve the high temperature rheological performances of rubberized binders [10], but also can enhance CRMA anti-fatigue and anti-cracking performance [11]. Different types of rubber sources and rubber types can be used to modify different types of base asphalt to obtain excellent high temperature rheological properties and short-term aging properties [11]. Comparing the CRMA with the SBS-modified asphalt, CRMA has better water resistance and permanent deformation resistance, and CRMA has better low temperature cracking resistance [12].…”

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confidence: 99%

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Estimation and Analysis of Energy Conservation and Emissions Reduction Effects of Warm-Mix Crumb Rubber-Modified Asphalts during Construction Period

et al. 2018

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In order to solve the serious environmental problems caused by the rapid increase in the number of waste tires and unproper storage of waste tires, modifying the asphalt mix for roadway pavement by adding rubber crumb from recycled waste tires is one of the highly effective approach to solve the problem and can achieve the sustainable use of rubber resources. The application of warm-mix crumb rubber-modified asphalt (CRMA) overcomes some issues of the hot-mix CRMA, such as high temperature and high energy consumption. However, there is a lack of estimation methodology for the energy conservation and emission reduction during the production process of warm-mix CRMA. This study develops the estimation models for the evaluation of energy conservation and emissions reduction during different production stages of waste rubber powder, asphalt, CRMA, hot-mix CRMA, and warm-mix CRMA. A list for gas emissions during the mixing and paving process of CRMA mixtures was established through the simulated mixing measurement and paving site measurement. The results show that for each metric ton of CRMA mixture produced, warm mixing can reduce energy consumption by 18~36% and decrease gas emissions during different stages by 15~87% compared to hot mixing. The Evotherm warm-mix CRMA mixture with DAT as warm mix agent (Ev-DAT warm-mix CRMA mixture) is more energy-efficient by saving approximately 108.56 MJ of energy and reducing gas emissions during mixing and paving by at least 32% and 73%, respectively. This model can improves the technical standard of warm-mix CRMA and the energy conservation assessment.Currently, most waste tires are treated as solid waste and are burned or dumped in landfills [4]. In 2007, the quantity of waste tires made into tire-derived fuel in the United States exceeded half of their annual tire yield, while the other 17.2% and 12.2% of waste tires were used as ground rubber materials and civil engineering materials respectively [5]. Waste recycling method that utilizes incineration, pyrolysis, and gasification are generally called waste-to-energy (WTE) processes [6]. This method may not be the best recycling method [7] since it releases a large amount of CO 2 , which causes environmental problems and prevents reutilizing rubber resources even though it converts the waste tires into usable heat, electricity, or fuel. Waste tire treatment consumes natural resources and produces environmental pollution, especially improper treatment results in an unacceptable level of natural resource consumption, environmental pollution, and massive carbon dioxide (CO 2 ) emissions.For saving rubber resources, realizing waste-tire sustainable utilization, and avoiding new pollutions and CO 2 emissions during recycling, researchers have contributed huge efforts. Bhadra et al. [4] processed waste tires into recycled carbon black, which realized rubber resources recycling utilization. Ayanoglu and Yumrutaş [8] adopted catalytic distillation for waste-tire pyrolysis to obtain engine fuel. In the field of civil engineering cons...

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“…After the shifting is completed and the shift factor coefficients are determined, they are plotted against each temperature (T). Typically, a second order polynomial then is fitted to the data to obtain the polynomial coefficients a 1 and a 2 in Equation 5 (15).…”

Section: Performance Testsmentioning

confidence: 99%

Effect of Addition of Dry Crumb Rubber on the Performance of Terminal Blend Crumb Rubber Modified Asphalt Mixtures

Kocak

Kutay

2017

Transportation Research Record

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Three major methods are used to produce crumb rubber modified asphalt pavement: the dry process (CRDry), the terminal blend process (CRTB), and the wet process (CRWet). Although the CRDry process replaces the portion of fine aggregate in the asphalt mixture with crumb rubber (CR) particles, the CRWet process incorporates CR particles into hot liquid asphalt before it is mixed with aggregates. CRTB is known as a special type of CRWet process in which the CR is blended with asphalt binder at the asphalt terminal. In general, the CRWet process can integrate 15% to 22% CR by weight of the binder. This amount ranges from 10% to 12% in the CRTB process as a result of the limitations associated with transportation and pumping. This study investigated the feasibility of increasing the CR content of CRTB modified asphalt mixtures. The addition to the mixture of about 0.5% CR (by weight of the mix) through the CRDry process doubled the amount of rubber to be found in a conventional CRTB mix. The relative performances of the CRTB and the CRTB+CRDry processes [i.e., crumb rubber hybrid (CRHY)] were investigated with respect to their linear viscoelastic properties, rutting susceptibility, moisture damage, resistance to fatigue, and low temperature cracking. It was shown that it was possible to increase the amount of CR in the mixture through the use of the CRHY method proposed here, without adverse effect on the performance of the mixture.

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Use of crumb rubber in lieu of binder grade bumping for mixtures with high percentage of reclaimed asphalt pavement

Cited by 19 publications

References 6 publications

Utilizing different wastes in rural roads of Karad, District – Satara, India

Utilizing different wastes in rural roads of Karad, District – Satara, India

Estimation and Analysis of Energy Conservation and Emissions Reduction Effects of Warm-Mix Crumb Rubber-Modified Asphalts during Construction Period

Effect of Addition of Dry Crumb Rubber on the Performance of Terminal Blend Crumb Rubber Modified Asphalt Mixtures

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