Green Bituminous Asphalt relevant for highway and airfield pavement

Al-Busaltan, Shakir; Nageim, Hassan Al; Atherton, William; Sharples, George P.

doi:10.1016/j.conbuildmat.2011.12.065

Cited by 45 publications

(25 citation statements)

References 7 publications

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“…As a result, the PWWC, OTLCC and optimum residual bitumen content were found to be 3.5%, 14% and 6.3%, respectively. These findings are comparable to those published by Al-Busaltan et al [40], Al-Hdabi et al [41].…”

Section: Samples Preparation and Conditioningsupporting

confidence: 92%

High performance cold asphalt concrete mixture for binder course using alkali-activated binary blended cementitious filler

Dulaimi

Nageim

Ruddock

et al. 2017

Construction and Building Materials

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Section: Samples Preparation and Conditioningsupporting

confidence: 92%

High performance cold asphalt concrete mixture for binder course using alkali-activated binary blended cementitious filler

Dulaimi

Nageim

Ruddock

et al. 2017

Construction and Building Materials

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“…al. [19] it is believed that stiffness and strength gain will increase in time. This cold mix behaviour will be investigated on site where regular FWD test will be carried on.…”

Section: Test Resultsmentioning

confidence: 99%

Specification development for cold in-situ recycling of asphalt

Tabaković

McNally

Fallon

2016

Construction and Building Materials

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In-situ cold recycling provides a valuable means to reduce the environmental impact of road construction. The reduced energy requirements relative to traditional hot mix recycling can lead to significant reductions in cost and associated CO2 emissions. Worldwide, in-situ cold recycling has been found to be particularly useful in the rehabilitation of rural roads where site locations are far from asphalt plants. However, practical issues remain due to the evolving nature of cold bituminous materials. Unlike hot-mix asphalts which gain strength quickly as they cool, cold-mix bituminous materials gain strength slowly over time. This is particularly an issue in countries with cooler, wetter climates, such as Ireland. Consequently the specification of cold materials poses a number of challenges relating to curing and testing protocols. This paper reports on the development of a specification for cold recycled materials and the application to a case study in Ireland. This work was conducted as part of the CEDR funded project CoRePaSol which focused on the development of harmonised design procedures for cold recycled mixes. In collaboration with the Irish National Roads Authority a 2.5km site on a national road was identified for a recycling trial. The existing guidance for Low Energy Pavements was used to classify the road with respect to traffic levels and a testing programme was implemented which sought to reflect best practice across Europe. A series of recycling options were assessed and four different

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“…CMA has considerably lower heat requirements than either hot or warm mix asphalt and is therefore associated with a considerable reduction in pollution emissions, which offers considerable economic, social, and environmental benefits [19,20]. However, cold mix asphalt is used far less often than HMA.…”

Section: Advances In Materials Science and Engineeringmentioning

confidence: 99%

Emission Reduction Performance of Modified Hot Mix Asphalt Mixtures

Wang

et al. 2017

Advances in Materials Science and Engineering

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Three novel asphalt modifiers with pollutant emission reduction effects and new emissions measurement equipment compatible with several preexisting asphalt production systems are developed in this paper. The effects of various modifier, asphalt binder type, and gradation of hot mix asphalt (HMA) on pollutant emissions are evaluated in the lab through a comprehensive experimental design. Furthermore, road performances are monitored to evaluate the emissions reduction of modified HMA mixture for production. With increasing modifier content, the emissions reduction performance is improved markedly, with maximum reduction of 70.5%. However, the impact of modifier content on pollutant emissions reduction tends to be insignificant for dosages greater than 20% of the initial asphalt weight. Changes in asphalt type and asphalt mix gradation are found to moderately impact the emissions reduction effect. Finally, the mechanisms of emissions reduction are investigated, primarily attribute to their physical and chemical adsorption and pollutant reductive degradation characteristics.

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Green Bituminous Asphalt relevant for highway and airfield pavement

Cited by 45 publications

References 7 publications

High performance cold asphalt concrete mixture for binder course using alkali-activated binary blended cementitious filler

High performance cold asphalt concrete mixture for binder course using alkali-activated binary blended cementitious filler

Specification development for cold in-situ recycling of asphalt

Emission Reduction Performance of Modified Hot Mix Asphalt Mixtures

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