Evotherm m1 can be added at the asphalt terminal or at the mix plant and is useful for producing warm mix asphalt based on all common formulation ingredients, including modified and unmodified asphalt binders, asphalt. Evaluation of warm mix asphalt technology for urban. Reducing paving emissions using warm mix technology. The following warmmix asphalt wma additives and processes are preapproved for use on. Warm mix asphalt wma is the name given to certain technologies that reduce the. State aid for local transportation may 2014 warm mix asphalt wma guidance in recent years the use of warm mix asphalt wma has rapidly increased across the united states.
A new technology involving asphalt cement modified with hypertherm was used to demonstrate that warm mix asphalt technology can be used to extend the paving season by facilitating paving in cold weather. Evotherm is a warm mix asphalt wma technology that offers exceptional advantages to asphalt contractors and roadbuilding engineers. Prowell assistant director national center for asphalt technology auburn university, auburn, alabama sponsored by meadwestvaco asphalt innovations ncat report 0602 june 2006. Evotherm warm mix asphalt technology is an efficient way to reduce emissions and save energy in the asphalt paving industry. Evaluation of evotherm for use in warm mix asphalt by graham c. Review of outstanding action items and negative vote. An existing tank, such as one used for antistrip, can store bulk evotherm. Telfer pavement technologies, llc, in keeping with our environmental commitment, offers evotherm warm mix asphalt additive wma. Evotherm is a wma technology that offers exceptional advantages to asphalt contractors and roadbuilding engineers. Muench civil and environmental engineering increased environmental awareness and stricter emissions regulations have led to a development of warm mix asphalt.
Evotherm technology in warm mix asphalt applications including typical paving. Prowell assistant director national center for asphalt technology auburn university, auburn, alabama sponsored by meadwestvaco asphalt. Technology that allows the reduction of mixing temperature by 20 to 100 f. Warm mix asphalt wma technology plays a significant role towards sustainable roadways by. Pdf warm mix asphalt wma represents the technologies that allow the. Warm mix asphalt for cold weather paving olof kristjansdottir chair of the supervisory committee. An overview of the emerging warm mix asphalt technology article pdf available in international journal of pavement engineering 151. This additive can be added to the binder at a rate. Evotherm dispersed asphalt technology dat same chemistry as evotherm et chemical concentrate directly injected into asphalt line at plant dat concentrate delivered at 5% by asphalt weight. Add a port to the asphalt cement line or weigh hopper to start making warm mix asphalt. The easy and ready to use formula provides comprehensive benefits that surpass conventional hot mix asphalt.
Hypertherm was initially validated as an effective warm mix technology. Evotherm warm mix asphalt is one alternative to achieve that purpose in the asphalt paving industry. The latest third generation is 3g, which is a waterfree technology offering new advantages for innovative warm mix solutions. Evotherm 50 f plant foam 60 f lea 100 f sasobit 47 f change in grade hma control wma, o c. Study of surfactant additives for the manufacture of warm mix asphalt. Evaluation of potential processes for use in warm mix asphalt. Industry and agencies must work together to make it happen.
Evotherm is easy to use, has proven performance across the globe, and saves money. Warm mix asphalt currently twenty two 22 technologies marketed and available in the us. Among these technologies, the use of chemical additives which are liquid. Warm mix asphalt wma emission reductions and energy. Asphalt mix that includes a technology which improves the production and placement of conventional asphalt mix at significantly lower. The latest napafhwa survey of asphalt producers use of recycled materials and warmmix asphalt find that nearly a quarter of all asphalt produced during the 2012 construction season was produced using warmmix asphalt. Drafter or producer of national highway specifications policy councilor of highway technology national test labs to evaluate pavement materials. Pdf evaluation of evotherm for use in warm mix asphalt. Warm asphalt mix emulsion, the precursor to wam foam in norway in 1996. Asphalt warm mix colorado department of transportation. Technology ncat, and the american association of state highway and. Evotherm warm mix asphalt technology ingevity ingevity.
Mndot office of materials what is warm mix asphalt wma. The evotherm mix did not cause any problems in the plant with the mixing process or with the handling of. Evotherm warm mix asphalt technology applied on ultrathin. Warm mix asphalt technology is identified as an asphalt mix technology that allows a. Hurley research engineer national center for asphalt technology auburn university, auburn, alabama brian d. Wma includes a series of technologies to mix and compact asphalt mixtures at temperatures lower than the temperatures normally used in the production of hot mix asphalt mainly by reducing the viscosity of asphalt binders. Evotherm is a new generation warm mix asphalt chemical additive which. Description and typical applications asphalt evotherm warm mix. Warm mix has allowed for longer haul distances, lower placement temperatures and improved. Using warm mix technology to improve applications of asphalt. In pavement industry, warm mix asphalt wma technologies provide a wide variety of environmental, technical, and economic benefits. This study evaluates the potential of wma technologies and their integration with rap.
Services and paragon technical services, inc lake asphalt. At the time, warm mix was developed to help reduce energy consumption and stack emissions during production. But these three hallmark benefits are just part of the reason the evotherm family of products are recognized as the worlds leading warm mix asphalt wma technology. Warm mix asphalt with rap national asphalt pavement. Special mixture design considerations and methods for wma presentations. The projects involved the placement of various asphalt. Pdf an overview of the emerging warm mix asphalt technology. Evaluation of evotherm as a wma technology compaction and. Getting started with warm mix asphalt new york state. In conjunction with mead westvaco, telfer has chosen evotherm as our warm mix. Manual distress surveys from the fall of 20 show that. Its easytouse formula provides comprehensive benefits that surpass conventional hot mix asphalt.
Warm mix asphalt what is it and how can we benefit. Evaluation of evotherm as a wma technology compaction and anti. Warm mix asphalt techniques evotherm in 2003, a company by the name of mead westvaco developed a new chemical additive called evotherm. Warm mix asphalt in minnesota tim clyne mndot north dakota asphalt conference. Warm mix asphalt wma, manufactured at a lower temperature. The authors thank the warm mix asphalt technology providers who furnished information for this publication. Pdf on jan 1, 2019, andrew abah onoja and others published the effect of evotherm on hot mix asphalt find, read and cite all the research you need on researchgate. Evotherm is available in intermediate bulk storage units. Warm mix asphalt wma is a technology that has seen widespread growth in canada since its.
We can also provide iso tainers or vendor managed inventory. Fuel usage data were collected at three additional plants. Easy to use evotherm promotes adhesion at lower temperatures by acting as both a liquid antistrip and a warm mix. Hurley and others published evaluation of evotherm for use in warm mix asphalt find, read and cite all the research you need on researchgate. Material producer list warm mix asphalt 2 november 20, 2019 warm mix asphalt. With the characteristics of evotherm warm mix asphalt technology introduced, the existing problem about hot mix asphalt technology applied on ultrathin pavement was put forward. Evaluation of potential processes for use in warm mix asphalt graham c. Evaluating constructability and properties of warm mix asphalt. Warm mix asphalt approval per the cdot field materials manual cp 59. Prowell assistant director national center for asphalt technology. The florida department of transportation began using warm mix asphalt wma on a trial basis in 2006. Evotherm warm mix asphalt telfer pavement technologies.
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