Oddziaływanie wapna hydratyzowanego na trwałość mieszanki mineralno-asfaltowej wytwarzanej w technologii „na półciepło”

• Autorzy: Iwański Mateusz M. , Owsiak Zdzisława , Remishova Eva

Identyfikatory

DOI

10.32047/CWB.2024.29.5.1

Warianty tytułu

EN

The action of hydrated lime on the durability of asphalt mixture produced in the half warm mix asphalt technology

• Języki publikacji: PL EN

Abstrakty

PL

Głównym priorytetem w drogownictwie jest zmniejszenie energochłonności wytwarzania mieszanek mineralno-asfaltowych przeznaczonych na górne warstwy konstrukcji nawierzchni. Najbardziej efektywną w tym zakresie jest technologia z wykorzystaniem asfaltu spienianego wodą. Pozwala ona uzyskać lepiszcze spienione wodą, z którego wytwarza się mieszanki mineralno-asfaltowe produkowane w technologii „na półciepło” w temperaturze o 40°C do 60°C mniejszej niż produkcja w tradycyjnej technologii. W badaniach zastosowano beton asfaltowy AC 8S wykonany z asfaltem 50/70. Właściwe parametry spieniania asfaltu 50/70 uzyskano stosując dodatek środka powierzchniowo czynnego. Zastosowano także wapno hydratyzowane jako zamiennik części wypełniacza mineralnego do mieszanki mineralno-asfaltowej. Celem badań było zbadanie trwałości eksploatacyjnej betonu asfaltowego poprzez pomiar właściwości takich jak wytrzymałość na pośrednie rozciąganie w zakresie temperatury od -10°C do +40°C oraz odporność na deformacje trwałe. Wykorzystując funkcję użyteczności Harringtona wyznaczono optymalną zawartość wapna hydratyzowanego i asfaltu spienionego ze względu na wymaganą trwałość betonu asfaltowego. Uzyskany efekt jest konsekwencją synergii wapna hydratyzowanego i asfaltu spienionego w mieszance AC 8S wykonanej w technologii „na półciepło”.

EN

The main priority in road construction is to reduce the energy consumption in the production of mineral-asphalt mixtures used for the upper layers of pavement structures. The most effective technology in this regard is the use of water-foamed bitumen. It allows for the production of water-foamed binders from which asphalt mixtures are made using a “half warm mix” technology at temperatures 40°C to 60°C lower than traditional production. In the research, AC 8S asphalt concrete was used, made with 50/70 bitumen. The proper foaming of bitumen 50/70 were achieved by using a surface active agent. Hydrated lime was also used as a substitute for part of the mineral filler in the asphalt mixture. The aim of the research was to determine the operational durability parameters of asphalt concrete, such as intermediate tensile strength in the temperature range from -10°C to +40°C, and resistance to permanent deformations. Using Harrington’s utility function, the optimal content of hydrated lime and foamed asphalt was determined based on the required durability of asphalt concrete. The obtained effect is a consequence of the synergy between hydrated lime and foamed bitumen in the AC 8S mixture made using the “half warm mix” technology.

Słowa kluczowe

PL

mieszanka mineralno-asfaltowa; technologia na półciepło; wapno hydratyzowane; asfalt spieniony; środek powierzchniowo czynny

EN

half warm mix asphalt; hydrated lime; foamed bitumen; surface active agent

• Wydawca: Fundacja Cement, Wapno, Beton
• Czasopismo: Cement Wapno Beton
• Rocznik: 2024
• Tom: R. 29, nr 5
• Strony: 344--359
• Opis fizyczny: Bibliogr. 35 poz., il., tab.

Twórcy

autor

Iwański Mateusz M.

• Department of Building Engineering Technologies and Organization, Faculty of Civil Engineering and Architecture, Kielce University of Technology, Kielce, Poland

autor

Owsiak Zdzisława

• Department of Building Engineering Technologies and Organization, Faculty of Civil Engineering and Architecture, Kielce University of Technology, Kielce, Poland

autor

Remishova Eva

• Department of Highway and Environmental Engineering, Faculty of Civil Engineering, University of Žilina, Žilina, Slovakia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025)