Flexible pavement rehabilitation with continuously reinforced concrete slab with HFRP bars - mechanistic analysis

Magdalena Złotowska , Roman Nagórski , Piotr Radziszewski , Michał Sarnowski , Paweł Tutka

Abstract

Asphalt road pavements are subject to damage under the influence of loads from the traffic of vehicles and of the environmental factors. One of the ways to strengthen damaged flexible pavements is to apply a cement concrete overlay with continuous reinforcement. The purpose of this paper is to analyze the road structure with concrete overlay with continuous reinforcement HFRP composite bars, which is laid on the existing cracked asphalt layers of a typical flexible road of KR3 traffic category. In HFRP bars some of the basalt fibers have been replaced with carbon fibers with the addition of resin binders. This do the possibility of making concrete slabs with increased resistance for environmental aggression, with good mechanical properties, which is especially important in the case of road constructions. An analysis of fatigue life of the strengthened asphalt pavement with a concrete slab with continuous reinforcement of HFRP bars was carried out, implementing the mechanistic model of the pavement structure. The stress analysis in the structure under the action of static loading was determined by the Finite Element Method using the Abaqus/Standard program. The maximum value of stress caused by temperature gradient in the concrete slab was calculated from the Westergaard’s formula for infinite slab. It has been shown that strengthening the analyzed road pavement with a continuous reinforcement is a technology that ensures an increase in fatigue life and reinforcement with HFRP bars further increases durability due to the negative impact of environmental factors.
Author Magdalena Złotowska (FCE / IRB)
Magdalena Złotowska,,
- The Institute of Roads and Bridges
, Roman Nagórski (FCE / IRB)
Roman Nagórski,,
- The Institute of Roads and Bridges
, Piotr Radziszewski (FCE / IRB)
Piotr Radziszewski,,
- The Institute of Roads and Bridges
, Michał Sarnowski (FCE / IRB)
Michał Sarnowski,,
- The Institute of Roads and Bridges
, Paweł Tutka (FCE / IRB)
Paweł Tutka,,
- The Institute of Roads and Bridges
Journal seriesMATEC Web of Conferences, ISSN , e-ISSN 2261-236X, (0 pkt)
Issue year2019
Vol262
Pages1-5
Publication size in sheets0.5
Conference64 Konferencja Naukowa Komitetu Inżynierii Lądowej i Wodnej PAN oraz Komitetu Nauki PZiTB, 16-09-2018 - 20-09-2018, Krynica, Polska
Keywords in Polishasfalt drogowy
Keywords in EnglishAsphalt road pavements
DOIDOI:10.1051/matecconf/201926205019
Languageen angielski
File
matecconf_krynica2018_05019.pdf 414.76 KB
Score (nominal)5
ScoreMinisterial score = 5.0, 24-06-2019, ArticleFromJournal
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