Zastosowanie kruszyw odzyskanych ze zniszczonej nawierzchni asfaltowej w betonowych nawierzchniach drogowych

Paluri, Yeswanth; Heeralal, M.; Rathish Kumar, P.

Artykuł - szczegóły

Tytuł artykułu

Zastosowanie kruszyw odzyskanych ze zniszczonej nawierzchni asfaltowej w betonowych nawierzchniach drogowych

Autorzy

Paluri Yeswanth , Heeralal M. , Rathish Kumar P.

Wybrane pełne teksty z tego czasopisma

http://www.cementwapnobeton.pl/

Identyfikatory

Warianty tytułu

A study on the use of reclaimed asphalt pavement aggregates in pavement quality concrete

Języki publikacji

PL EN

Abstrakty

W celu rozwiązania problemu z brakiem naturalnych kruszyw zaproponowano stosowanie kruszyw odzyskanych ze zniszczonych nawierzchni asfaltowych. W przypadku ich właściwej obróbki składają się one z dobrej jakości kruszywa, jednak pokrytego warstewką asfaltu. W doświadczeniach naturalne kruszywa zastępowano częściowo tym odzyskanym kruszywem. Badania właściwości uzyskanych betonów wykazały, że zastąpienie naturalnego kruszywa w ilości przekraczającej 20% powodują znaczne zmniejszenie wytrzymałości na ściskanie. Natomiast zastępowanie nie przekraczające tego poziomu zapewniało jakość betonu utrzymującą się w poprawnych granicach dla betonu klasy 40 MPa. Także wytrzymałość na zginanie betonu zawierającego 20% kruszywa odzyskanego z nawierzchni asfaltowej była większa od 4,5 MPa. Uzyskane wyniki pokazują, że zawartość odzyskanego kruszywa w betonie nie przekraczająca 20% nie ma niekorzystnego wpływu na właściwości uzyskanych betonów.

To overcome the deficit of natural aggregates, alternate materials are being proposed. As an alternative to natural aggregates, reclaimed asphalt pavement (RAP) aggregates in the present study was used. When processed properly, RAP consists of well-graded, high quality aggregates, coated by a layer of asphalt. In the current study natural aggregates were partially replaced by RAP aggregates. These specimens were tested for the mechanical properties. A substantial loss in the compressive strength of RAP based concrete was observed when more than 20% of RAP aggregates were used. For 20% replacement of RAP aggregate, the compressive strength was within the acceptable limits for producing a 40 MPa concrete. Also the flexural strength of 20% RAP concrete was higher than 4.5 MPa and also, 20% had higher flexural toughness compared to the control mix, without RAP. These results suggest that as much of 20% of RAP aggregates can be used for PQC without any significant impact on the properties of the concrete produced.

Słowa kluczowe

kruszywo recyklingowe nawierzchnia asfaltowa nawierzchnia betonowa nawierzchnia drogowa beton właściwości

recycled aggregate asphalt pavement concrete pavement road pavement concrete properties

Wydawca

Fundacja Cement, Wapno, Beton

Czasopismo

Cement Wapno Beton

Rocznik

2019

Tom

R. 24/86, nr 6

Strony

421--431

Opis fizyczny

Bibliogr. 33 poz., il., tab.

Twórcy

autor

Paluri Yeswanth

Department of Civil Engineering, National Institute of Technology, Warangal, India

autor

Heeralal M.

Department of Civil Engineering, National Institute of Technology, Warangal, India

autor

Rathish Kumar P.

Department of Civil Engineering, National Institute of Technology, Warangal, India

Bibliografia

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Typ dokumentu

Bibliografia

Identyfikator YADDA

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