Influence of Waste Engine Oil Addition on the Properties of Zeolite-Foamed Asphalt

Abstract

The previous studies on asphalt mix and asphalt with waste engine oil addition indicate the possibility of using this type of waste material for the construction of road pavements. The research presented in this paper aimed at the preliminary assessment of possible waste engine oil (WEO) addition to the asphalts foamed with water-soaked zeolites. In this research, synthetic zeolite Na-P1 and natural clinoptilolite were used. In order to improve the foaming effect, the zeolites were soaked with water before dispensing to the asphalt, in the amount of 75% asphalt weight for Na-P1 and 25% for clinoptilolite. The tests were performed for one type of waste engine oil—5W40 and two type of binders: 20/30 and polymer modified 25/55-60. The asphalt parameters such as the dynamic viscosity, penetration and softening point were determined with the addition of WEO and zeolites in the concentration of 0%, 3%, 5%, 7% for both materials. It was found that the WEO addition lowers the viscosity and softening point of asphalt but increases penetration. The zeolite addition affected the change of these parameters to a minor extent or was statistically irrelevant. The chemical analysis of the asphalt samples with WEO addition performed with the X-ray Fluorescence method did not show a significant amount of heavy metals which would increase the probability of low-temperature cracking. The analysis of the results indicates the possibility of using zeolite-foamed asphalt technology with WEO addition.

Application of Zeolite Tuffs as Mineral Filler in Warm Mix Asphalt

“…The penetration of the 35/50 asphalt was 33.4 × 0.1 mm. The addition of the fillers caused a slight decrease in the parameter, which is consistent with the test results of the bitumens with Na-P1 zeolite addition [25]. As noted by Nciri et al, this phenomenon is caused by the stiffening of asphalt binder after mixing with dust fraction.…”

“…Regardless of the type of dosed filler, a slight decrease in viscosity was observed 30 min after the test beginning (45 min after dosing the additive to the asphalt binder). The same relationship was obtained when using other types of zeolite materials [16,25].…”

“…The previous studies indicate that the mixes produced in the foamed asphalt technology by the addition of zeolites are characterized by the fatigue resistance comparable to hot mixes and a slightly lower stiffness modulus [20,21]. Some studies also indicate the reduced water and frost resistance [22][23][24], especially when using the zeolites soaked with water, which improves the foaming effect of asphalt [25,26]. Resistance to water is improved in the case of WMA with zeolite by the addition of hydrated lime [27,28], which is a commonly used antistripping mineral additive in asphalt pavements.…”

Zeolites in Phenol Removal in the Presence of Cu(II) Ions—Comparison of Sorption Properties after Chitosan Modification

“…Products, such as natural and synthetic zeolites [13,14], agricultural origin byproducts [15], clay minerals [16], and industrial wastes [17], are used for this purpose by many researchers due to their low cost and good capabilities for adsorption processes. As mineral materials, zeolites are very popular and have numerous environmental and industrial applications [18][19][20][21][22]. What is important, the recent studies showed they can be obtained from industrial wastes, such as fly ashes [23].…”

Residual Compressive Strength of Recycled Aggregate Concretes after High Temperature Exposure

“…The growing interest in the sustainable management of production processes is of particular relevance to justify special measures in the design and construction of civil infrastructure and buildings. The use of waste materials in construction is in line with the principles of sustainable development, and there exists a number of environmentally friendly production technologies that make use of waste material as fillers or additions to concrete and other construction materials, such as asphalt [1][2][3][4][5]. Among the different existing alternatives, the use of concrete with recycled aggregates, which incorporate aggregates from construction and demolition waste, is particularly relevant.…”