Effect of zeolite properties on asphalt foaming

Zeolit Kao Aditiv U Toplim Asfaltnim Mešavinama

“…Convencional HMA (Hot Mix Asphalt) production and pavements emit large amounts of greenhouse gases such as CO2, CH4 and N2O, [1] as well as aerosols [2]. In order to decrease mixing and compation temperatures and reduce the emission of harmful compounds, new technologies are used, such as WMAs (Warm Mix Asphalts) which allow temperature reduction of 20-40°C compared to HMA technology.…”

“…Further, asphalt foaming technology is devided into water-based and watercontainig (storing) group e.g. natural or synthetic zeolites [2,4]. Zeolites are a group of microporous aluminosilicate minerals with crystalline stricture containing water particles so-called "zeolitic water" in their composition.…”

“…Zeolites are a group of microporous aluminosilicate minerals with crystalline stricture containing water particles so-called "zeolitic water" in their composition. At 400°C comes to the continuous release of "zeolitic water", without damaging the crystalline structure [2]. [3] Zeolites used as material can be natural or synthetic origin.…”

“…Group of natural zeolites includes about 100 different minerals, but only those which creating deposites (e.g. clinoptilolite, phillipsite, chabazite and modernite) are economically interesting [2]. In Serbia, the largest zeolite deposits are Beocin, Igros, Jablanica 1, Toponica and Zlatokop [5].…”

“…In Serbia, the largest zeolite deposits are Beocin, Igros, Jablanica 1, Toponica and Zlatokop [5]. Synthetic zeolites are artificial made from the chemical reagents, mineral materials or some waste by-products of industry such as fly ash [2], which is expecially interesting because during coal combustion in thermal power plants about 5 million tons of fly ash is generated per year in Serbia [6]. The use of zeolite as additive in WMA is a new current topic, and up to now there are several published papers which deal with it, but in near future an increase in application of WMA is expected as well as more scientific papers on this topic.…”