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Evaluation of Rheological Behavior, Resistance to Permanent Deformation, and Resistance to Fatigue of Asphalt Mixtures Modified with Nanoclay and SBS Polymer

Department of Civil Engineering, Federal University of Santa Catarina, Florianópolis 88040-900, Brazil
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Appl. Sci. 2019, 9(13), 2697; https://doi.org/10.3390/app9132697
Received: 23 May 2019 / Revised: 23 June 2019 / Accepted: 27 June 2019 / Published: 2 July 2019
Fatigue cracking and rutting are among the main distresses identified in flexible pavements. To reduce these problems and other distresses, modified asphalt mixtures have been designed and studied. In this regard, this paper presents the results of a study on rheological behavior and resistance to permanent deformation and to fatigue of four different asphalt mixtures: (1) with conventional asphalt binder (CAP 50/70); (2) with binder modified by nanoclay (3% NC); (3) with binder modified by styrene–butadiene–styrene polymer (SBS 60/85); and (4) with binder modified by nanoclay and SBS (3% NC + 2% SBS). For this analysis, the mixtures were evaluated based on complex modulus, permanent deformation tests, and fatigue tests (4PB, in the four-point bending apparatus), with the subsequent application of numerical simulations. The results obtained show a better rheological behavior related to greater resistance to permanent deformation for the mixture 3% NC + 2% SBS, which could represent an alternative for roads where a high resistance to rutting is required. Otherwise, on fatigue tests, higher resistance was observed for the SBS 60/85 mixture, followed by the 3% NC + 2% SBS mixture. Nevertheless, based on the results of the numerical simulations and considering the possibility of cost reduction for the use of the 3% NC + 2% SBS mixture, it is concluded that this modified material has potential to provide improvements to the road sector around the world, especially in Brazil. View Full-Text
Keywords: modified asphalt mixtures; nanomaterials; polymers; rheological behavior; fatigue cracking; permanent deformation modified asphalt mixtures; nanomaterials; polymers; rheological behavior; fatigue cracking; permanent deformation
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MDPI and ACS Style

Ceccon Carlesso, G.; Trichês, G.; Staub de Melo, J.V.; Marcon, M.F.; Padilha Thives, L.; da Luz, L.C. Evaluation of Rheological Behavior, Resistance to Permanent Deformation, and Resistance to Fatigue of Asphalt Mixtures Modified with Nanoclay and SBS Polymer. Appl. Sci. 2019, 9, 2697. https://doi.org/10.3390/app9132697

AMA Style

Ceccon Carlesso G, Trichês G, Staub de Melo JV, Marcon MF, Padilha Thives L, da Luz LC. Evaluation of Rheological Behavior, Resistance to Permanent Deformation, and Resistance to Fatigue of Asphalt Mixtures Modified with Nanoclay and SBS Polymer. Applied Sciences. 2019; 9(13):2697. https://doi.org/10.3390/app9132697

Chicago/Turabian Style

Ceccon Carlesso, Gabriela, Glicério Trichês, João V. Staub de Melo, Matheus F. Marcon, Liseane Padilha Thives, and Lídia C. da Luz. 2019. "Evaluation of Rheological Behavior, Resistance to Permanent Deformation, and Resistance to Fatigue of Asphalt Mixtures Modified with Nanoclay and SBS Polymer" Applied Sciences 9, no. 13: 2697. https://doi.org/10.3390/app9132697

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