NDLI: Avaliação da aderência pneu-pavimento e tendências de desempenho para a rodovia BR-290/RS

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Avaliação da aderência pneu-pavimento e tendências de desempenho para a rodovia BR-290/RS

Content Provider	Semantic Scholar
Author	Mattos, João Rodrigo Guerreiro
Copyright Year	2009
Abstract	MATTOS, J. R. G. Evaluation and Modeling of Tire-Road Friction in Brazilian Federal Road BR-290/RS. 2009. MSc. Thesis – Department of Civil Engineering Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil. Tire-road friction is one of the most important parameters regarding the safety of vehicles under slippery road conditions. Road surface texture is currently evaluated using several devices. In Brazil, the British Pendulum and the sand-patch method are most frequently used to measure microtexture and macrotexture, respectively. They were used in the research reported in this dissertation that aimed at verifying texture evolution with time/traffic on different types of pavement wearing courses. Thus, micro and macrotexture values were monthly measured in surveys carried out during one year in Brazilian Federal Road BR290/RS. Collected data allowed defining performance trends regarding micro and macrotexture of asphalt and Portland Cement Concrete (PCC) pavements. The models here proposed might be used as auxiliary tools in Pavement Management Systems (PMS) to estimate the time when a given rehabilitation action is necessary to assure vehicle and drivers safety. Results analysis showed that the surveyed pavements present adequate tire-road friction, when evaluated by the International Friction Index (IFI) which combines pavements macro and microtexture. In addition, a model relating results of the sand-patch method to drainability results is proposed. Such model allows the estimation of the IFI based on values of water inflow through the pavements wearing courses. Key-words: tire-road friction; road safety; pavement management.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://www.lume.ufrgs.br/bitstream/handle/10183/30215/000778679.pdf?isAllowed=y&sequence=1
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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