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Site-won asphalt utilization in road construction in Poland

Krawczyńska-Piechna Anna, Budek-Wiśniewska Katarzyna, Zaręba Marcin

Materiały Budowlane

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2025

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nr 5

88--95

EN

Site-won asphalt is a valuable product, and its reuse reduces a demand for non-renewable resources such as asphalt and aggregates, and also provides economic and ecological benefits. The article presents briefly the state of knowledge regarding the use of asphalt reclaim in road construction, as well as legal issues and guidelines regarding the use of reclaimed asphalt pavement (RAP) in the country and abroad. The results of literature findings are compared to the results of a research survey, developed at the turn of 2024 and 2025 and aimed at obtaining current quantitative and qualitative data on the use of demolition materials in road construction in Poland.

PL

Destrukt asfaltowy jest wartościowym materiałem, a jego ponowne wykorzystanie umożliwia zmniejszenie zapotrzebowania na użycie surowców nieodnawialnych, jakimi są asfalt i kruszywa, a także daje ekonomiczne i ekologiczne korzyści. W artykule dokonano krótkiego przeglądu obecnego stanu wiedzy na temat poziomu wykorzystania tego materiału w budowie dróg, a także opisano regulacje prawne oraz wytyczne, pozwalające na stosowanie destruktu w kraju i za granicą. Wyniki studiów literaturowych odniesiono do wyników ankiety badawczej, przeprowadzonej na przełomie 2024 i 2025 r. i mającej na celu pozyskanie aktualnych danych ilościowych i jakościowych dotyczących wykorzystywania materiałów rozbiórkowych w budowie dróg w Polsce.

2

Drugie życie mieszanki SMA : Ocena stanu nawierzchni po 5 latach eksploatacji

Jurczak Robert

Magazyn Autostrady

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2025

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Nr 3

32--36

PL

W artykule przedstawiono doświadczenia z wykonania i eksploatacji odcinka warstwy ścieralnej nawierzchni drogi ekspresowej S3, w której użyto granulatu asfaltowego. Dodatek granulatu dozowano metodą na zimno w ilości 15%. Pozyskano go w wyniku selektywnego frezowania istniejącej warstwy ścieralnej z mieszanki SMA. Wykonany odcinek potwierdza możliwość wykorzystania granulatu asfaltowego nie tylko w warstwach podbudowy i wiążącej, ale również w warstwach ścieralnych. Obowiązujące wymagania w stosunku do mieszanki SMA zostały w pełni spełnione. Po upływie pięciu lat znajduje się ona w bardzo dobrym stanie technicznym.

EN

The article presents the experimentation in constructing and servicing an experimental section of the wearing course of the S3 expressway, in which reclaimed asphalt granulate was used. Its 15% addition was dosed using the cold method. The granulate was obtained by selective milling of the existing SMA mixture wearing course. The completed section confirms the possibility of using reclaimed asphalt granulate not only in the subgrade and binder layers, but also in the wearing course. The existing requirements for the SMA mixture have been fully met. After five years, it remains in very good technical condition.

3

The Effect of the Dedicated Binder on the Propertiesof Cold Recycled Mixtures

Iwański Marek, Mazurek Grzegorz, Iwański Mateusz M., Buczyński Przemysław

Inżynieria Mineralna

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2024

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Vol. 1, no. 2

art. no. 06

EN

The most important priority in the field of environmental protection is the implementation of the principle of closed-cycle materials management in construction. This problem also plays an important role in road construction. Due to the increasing traffic load of heavy vehicles and the impact of climatic factors, the road structure is subject to destructive processes that lead to the loss of its durability in time. Therefore, the roads periodically need to be modernized. Very often, it is necessary to carry out critical activities on the foundation to improve the load-bearing capacity of the pavement structure. As part of these works, large amounts of reclaimed asphalt and aggregate are obtained during milling of the lower structural layers of the surface. Applying the principle of closed-cycled material management, the most effective technology for using this material is its re-construction using deep cold recycling technology. This technology uses hydraulic binder and bituminous emulsion, and currently, more and more often, foamed bitumen. Due to the fact that the materials obtained from road structure layers are ofvery different quality, it is necessary to use a binder that will be dedicated specifically to the materials used (reclaimed asphalt pavement, reclaimed stone). In experiment Portland cement CEM I 32.5, hydrated lime and cement by-pass dust as a by-product obtained from cement plants were used. All components were mixed in various proportions controlled by experiment plan. The influence of a dedicated binder on absorption, dynamic modulus, phase angle in the specific temperature range and rutting resistance of a cold recycled mixture designed with reclaimed asphalt pavement, reclaimed aggregate and foamed asphalt was examined. The obtained test results were subjected to statistical analysis using the ANOVA test in order to determine the significance of the influence of individual components of the dedicated binder on the considered parameter of the cold recycled mixtures. It was determined that the dedicated binder used for the tested recycled asphalt mixture ensures its most favorable parameters when contains: 40% CEM I 35.2, 20% hydrated lime and 40% cement by-pass dust.