The subject of invention is asphalt with the addition of PMMA/ATH composite powder as a replacement or additive to the fill. PMMA/ATH composite powder is, according to the invention, added to the fill to improve the properties of asphalt mixtures. The invention is within the scope of asphalt. Fill is the smallest stone fraction in the asphalt mixture with standardized presejna curve. The asphalt mixture, according to the invention, contains in mass percentage, from 3% to 8% of binder, from 75% to 94% of stone aggregate with a particle size larger than the grain size of fillers, 0% to 17% of a filler and from 0.5 to 17% of PMMA/ATH composite powder . With laboratory study and test fields we found out that the addition of PMMA / ATH composite dust improves the resistance of asphalt to the formation of cracks at low temperatures and resistance to the formation of ruts at elevated summer temperatures. The investigations we have demonstrated that the addition of PMMA / ATH composite powder can also modify and improve bitumen.
F.07 Improvements to an existing product
COBISS.SI-ID: 4621850After five years Asphalt Pavement Association of Slovenia (ZAS) issued an updated book Asfalt2. In this short time period, some significant changes have occurred, which marked the asphalt branch. In 2008 the European standards were introduced throughout the EU. In Slovenia at the same time with European standards the Slovenian national appendices were accepted with narrower limits of the technical requirements adapted to our local conditions. In the last few years the regulation for pavement design was also changed in Slovenia. Increasing demands are placed for the technical requirements and for the protection of the environment. Authors of the book Asfalt2 are top Slovenian experts from institutes, executive, engineering and construction companies. They collected and upgraded knowledge from several existing documents, which are important at this moment in the asphalt industry. In this book a shorter version of accumulated technical regulations, current knowledge and future prospects of Slovene asphalt branch are presented. This book lays the basis for the asphalt industry to continuously reduce energy demands, to use alternative materials in asphalt roads and to increase durability of asphalt pavements.
C.02 Editorial board of a national monograph
COBISS.SI-ID: 255955200In the frame of the study of the usefulness of ash from the grate produced in cogeneration facility Celje (TC), we decided that we will try to use this ash as an ingredient in asphalt mixes. From the combustion of light fractions of municipal waste and sewage treatment plants are formed two types of ash and ash through the grate (Bottom Ash - BA), which is categorized as non-hazardous waste and fly ash (Fly Ash - FA) which is categorized as hazardous waste. It is estimated that at the normal operation of TC it produce 4 000 t BA and 500 t of FA per year. In the interest of the Celje District manager is to find potential applications for both waste and thereby reduce the amount of material that needs to be permanently disposed of at an appropriate landfill. With laboratory tests, we found that the ash from the grate can used as a supplement to filler in the asphalt mixture. In the laboratory we have prepared an asphalt design for the asphalt wearing course (AC Surf 8 B 50/70 A4) with about 2% BA ash, which meets the requirements of Slovenian standards. We are aware that real performance of asphalt containing BA ash can be validated with industrial production of such asphalt in the asphalt plant. With monitoring durability of built in asphalt layers, we observe the behavior of the material in the test field and in just a few years we can finally evaluate the suitability of BA ash in asphalt mixtures.
F.07 Improvements to an existing product
COBISS.SI-ID: 4874010