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Appl. Sci. 2017, 7(7), 745; doi:10.3390/app7070745

Study of Surfactant Additives for the Manufacture of Warm Mix Asphalt: From Laboratory Design to Asphalt Plant Manufacture

Construction Engineering Laboratory of the University of Granada (LabIC.UGR), 18071 Granada, Spain
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Academic Editors: Zhanping You, Qingli (Barbara) Dai and Feipeng Xiao
Received: 20 June 2017 / Revised: 12 July 2017 / Accepted: 19 July 2017 / Published: 21 July 2017
(This article belongs to the Special Issue Advanced Asphalt Materials and Paving Technologies)
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Abstract

Warm Mix Asphalt (WMA), manufactured at a lower temperature than the traditional Hot Mix Asphalt (HMA), allows for important economic and environmental benefits when considered for application in roads. Nonetheless, despite the benefits, its application in pavement for roads is not as widespread as desired from an environmental point of view; more in-depth studies to investigate its development and wider applicability are required. Thus, the present paper aims to contribute to the implementation of this cleaner technology to produce WMA (based on chemical additives) for its application in pavement for roads, including from the stage of the design of the material in the laboratory (by selecting the most appropriate manufacturing temperature and additive type and dosage) to its production in a conventional industrial plant for its use in a trial section. Results demonstrate that it is possible to reduce the manufacturing temperature of asphalt mixtures by using chemical additives, recording similar mechanical behaviour (or even superior) to conventional hot mixtures when specific studies are developed for the optimal design of the WMA. It was also shown that these mixtures could be produced in a conventional asphalt plant without implementing important changes in equipment, which implies a cost-effective solution that can readily be incorporated into traditional plant procedures. View Full-Text
Keywords: warm mix asphalt; additives; sustainability; water sensitivity; stiffness; plastic deformation warm mix asphalt; additives; sustainability; water sensitivity; stiffness; plastic deformation
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MDPI and ACS Style

Sol-Sánchez, M.; Moreno-Navarro, F.; Rubio-Gámez, M.C. Study of Surfactant Additives for the Manufacture of Warm Mix Asphalt: From Laboratory Design to Asphalt Plant Manufacture. Appl. Sci. 2017, 7, 745.

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