Determination of deflections of an innovative pavement structure containing a three-component hydraulic binder

• Autorzy: Szydło Antoni , Mackiewicz Piotr

Identyfikatory

DOI

10.7409/rabdim.023.001

Warianty tytułu

PL

Identyfikacja ugięć innowacyjnej konstrukcji nawierzchni zawierającej trójskładnikowe spoiwo hydrauliczne

• Języki publikacji: EN PL

Abstrakty

EN

The article presents the results of dynamic loading tests of an innovative pavement structure constructed on a special test site. Two novel mixtures incorporating the cold-recycling technology with bituminous emulsion and foamed bitumen were used. They contained a dedicated (three-component) hydraulic binder, further referred to as the innovative binder. Particular research effort was devoted to the analysis of pavement deflection measurements obtained using a Falling Weight Deflectometer (FWD) device. The tests were performed on four test sections using mineral-cement mixtures with foamed bitumen (MCAS) and mineral-cement mixtures with bituminous emulsion (MCE), whereas two sections incorporated the innovative hydraulic binder and two sections incorporated only cement. The obtained test results indicated that mixtures containing the innovative binder displayed greater deflections. This fact reflects lower mixture stiffness, which, in consequence, is associated with mitigation of fatigue and cracking.

PL

Tematem artykułu są badania dynamiczne warstw innowacyjnej konstrukcji nawierzchni zbudowanej na specjalnym odcinku doświadczalnym. Na tym odcinku wbudowano dwie nowatorskie mieszanki w technologii recyklingu głębokiego na zimno z emulsją asfaltową oraz z asfaltem spienionym, stosując do nich specjalnie opracowany środek wiążący (trójskładnikowy) zwany dalej spoiwem innowacyjnym. Szczególną uwagę poświęcono analizie wyników pomiarów ugięć nawierzchni z wykorzystaniem ugięciomierza dynamicznego FWD (ang. Falling Weight Deflectometer). Badania przeprowadzono dla czterech sekcji nawierzchni zawie- rających mieszanki mineralno-cementowe z asfaltem spienionym (MCAS) oraz mieszanki mineralno-cementowe z emulsją asfaltową (MCE), przy czym dwie sekcje zawierały innowacyjne spoiwo, a w przypadku dwóch innych zastosowano tylko cement. Na podstawie badań stwierdzono, że dla warstw zawierających mieszanki ze spoiwem innowacyjnym występują większe wartości ugięć. Świadczy to o mniejszej sztywności mieszanek, co w konsekwencji pozwala na ograniczenie zmęczenia i spękań.

Słowa kluczowe

EN

asphalt emulsion; foamed asphalt; hydraulic binder; mineral-cement mixtures; recycling

PL

asfalt spieniony; emulsja asfaltowa; mieszanka mineralno-cementowa; recykling; spoiwo hydrauliczne

• Wydawca: Instytut Badawczy Dróg i Mostów
• Czasopismo: Roads and Bridges - Drogi i Mosty
• Rocznik: 2023
• Tom: Vol. 22, no. 1
• Strony: 5--17
• Opis fizyczny: Bibliogr. 25 poz., rys., tab.

Twórcy

autor

Szydło Antoni

• Wroclaw University of Science and Technology, Faculty of Civil Engineering, 41 Wybrzeże Wyspiańskiego, 50-370 Wroclaw

• https://orcid.org/0000-0002-3363-9391

autor

Mackiewicz Piotr

• Wroclaw University of Science and Technology, Faculty of Civil Engineering, 41 Wybrzeże Wyspiańskiego, 50-370 Wroclaw

• https://orcid.org/0000-0002-3170-6415

Bibliografia

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Uwagi

Article co-edited by Prof. Wojciech Bańkowski and Prof. Jorge Pais, from the series of works under the common title: “Use of RAP in Road Engineering” as part of the Ministry of Education and Science project No. RCN/SP/0569/2021/1 (artykuł współredagowany przez dr. hab. inż. Wojciecha Bańkowskiego, prof. IBDiM, oraz dr. inż. Jorge Paisa, prof. Uniwersytetu w Minho, z cyklu prac pod wspólnym tytułem „Wykorzystanie destruktu asfaltowego w budownictwie drogowym” w ramach projektu MEiN Nr RCN/SP/0569/2021/1)