The California Department of Transportation (Caltrans), the state agency responsible for highway, bridge, and rail transportation planning, construction, and maintenance, recently approved AkzoNobel’s Rediset WMX warm mix additive for unrestricted use on any Caltrans project in California, USA.
Rediset WMX successfully passed the approval process for Warm Mix Asphalt (WMA) technology developed by Caltrans, in coordination with Industry, Academia and Federal Highway Administration (FHWA), to fast-track the assessment and implementation of new WMA technologies.
WMA technology allows the mixing and placement of asphalt mix temperatures considerably lower than those used with conventional Hot Mix Asphalt. It offers multiple advantages for the environment and workers such as fuel conservation, lower emissions, decreased worker exposure to asphalt fumes, and enhanced workability of asphalt at lower temperatures.
WMA technology is one of the focused areas selected for FHWA’s Every Day Counts “Accelerated Technology and Innovation Deployment” initiative.
Rediset WMX – Providing superior performance at lower temperatures
Developed by AkzoNobel’s scientists with expertise in Asphalt solutions and technologies, Rediset WMX additive system lowers mixing and compaction temperatures, offers superior compaction, improves the moisture resistance properties of the mix, and maintains the performance properties of the binder. These properties results in longer-lasting roads and enables the use of local materials.
Rediset WMX provides:
Modified mixes with superior workability and compaction vs. other warm-mix technologies
Good results at reduced temperatures (typically 60º F lower) even with difficult- to-compact mixes such as stone mastic asphalts (SMAs), PG 76-22 (PMB) and crumb-rubber- modified (CRM) mixes
Combined warm-mix effect and active adhesion promotion/anti-stripping effect, thus alleviating concerns about residual aggregate moisture in a warm-mix operation
Use at broader dosage levels vs. other warm-mix technologies, without compromising bitumen properties
Good heat stability – can be stored in hot asphalt for two weeks without any negative effect on performance
Unmatched versatility – works with a wide spectrum of asphalts, aggregates and mixes
Extended silo storage for asphalt mixes at required temperatures, with no loss of its warm-mix and adhesion promoter properties
Modified mixes that can be opened to traffic sooner than other warm-mix technologies and much sooner than hot-mixes
For more information please contact:
Ray Hess
Akzo Nobel Surface Chemistry LLC
E-mail: ray.hess@akzonobel.com
For more product and market information, please visit our Ashphalt (Americas) website.