Effects of Warm Mix Asphalt Additives on Aging Characteristics of Bituminous Mixtures

Abstract

Abstract

Investigation the Physical and Rheological Properties of Bitumen Modified with Warm Mix Asphalt Additive

“…The reported results showed that significant changes occur in properties of produced WMA samples and the level of changes are depended on bitumen and additive type as well as additive rates. Dokandari and Topal [38] investigated the short and long-term aged properties of WMA produced with foamed and nonfoamed additive up to 7% by weight of bitumen in rate. Conventional bitumen tests and the indirect tension tests were performed on WMA samples.…”

Zeolit Kao Aditiv U Toplim Asfaltnim Mešavinama

“…Mixture with temperatures which is lower than minimum would be impossible to compact because of viscosity. For mixing and compaction temperatures optimal content of zeolite is 5% relative to ashalt binder [14,15,16,21]. With this percentage content minimal temperature range is obtained.…”

“…Table 1 shows the change of link performance of bitumen, depending on the amount and type of zeolite [14]. With increasing the content of zeolite, penetration value decreases [14,15,16,17]. The softening point is determined as the temperature at which a sample of bitumen, subjected to a progressive increase of temperature and the weight of a steel sphere, reaches a consistence that leads to its flow through a ring of steel, until obtain a specific deformation.…”

“…The softening point is determined as the temperature at which a sample of bitumen, subjected to a progressive increase of temperature and the weight of a steel sphere, reaches a consistence that leads to its flow through a ring of steel, until obtain a specific deformation. By increasing content of zeolite (natural and synthetic) softening point is also increased [14,15,16,17]. …”

Evaluation of the Physical Performance and Working Mechanism of Asphalt Containing a Surfactant Warm Mix Additive

“…ese reductions in mixing and compaction temperatures greatly reduce asphalt smoke emissions and energy consumption and can greatly reduce the aging of the asphalt binder, thus increasing the service life of asphalt pavement [7,8]. As the compaction performance of low-temperature asphalt improves, asphalt's limited transportation and construction times can be extended [9].…”