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Dimensionering av vägens bärlager: Hur påverkar asfaltbetongblandningen och hur effektiv är svensk dimensioneringsmetod?
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
2013 (Swedish)Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesisAlternative title
Road pavement design : What is the effect of the asphalt concrete mixture and how effective are Swedish design methods? (English)
Abstract [sv]

Det här arbetet handlar om asfaltbetongblandningar och hur variationen av dessa vid projektering påverkar vägarnas dimensionering i överbyggnaden mer specifikt bärlagret. Arbetet är baserat på litteraturstudier av den senaste teorin kring dimensionering av asfaltbetongblandningar i väglager samt tillhörande kravskrifter både från svenska och amerikanska myndigheter. Den inledande delen i examensarbetet omfattar bakgrunden till vägdimensionering. Inledningsvis behandlas materialet asfaltbetong och derss egenskaper för att sedan gå vidare till allmänt om vägar, hur de utformas, vägens funktionella egenskaper och skador som kan uppstå. Detta ska ge läsaren tillräckligt med bakgrund för att följa med i resten av arbetet där man kan läsa mer ingående om deformationsskador och vilka parametrar som är till stor vikt när man studerar skador som uppstår i asfaltbetongen samt relationen till dem egenskaper bitumen har. Rapporten avslutas med att resonera kring eventuella problem kring dimensioneringsmetoder samt betydelsen av blandningens hållfasthetsegenskaper och hur de påverkar vägarnas tjocklek. Slutsatsen i rapporten är att asfaltbetongblandningen har en betydelse för dimensionering av bärlager och att det kan vara någonting att beakta oftare vid vägdimensionering speciellt vid blandningar som skiljer sig mycket från standardvarianterna.

Abstract [en]

This essay is about bitumen concrete pavement mixtures and how the variation of these affects the design of the superstructure of the road during the design-stadium, more specifically the pavement. The essay is based upon studies of literature written about the latest theory of asphalt concrete design for roads as well as the texts with regulations from Swedish and American government agencies. The introductory parts of the essay consist of the background to road design. Initially bitumen concrete and its characteristics are discussed and move on to general information about roads, how they are designed, the roads serviceable characteristics and finally the damage that can develop. This is meant to give the reader enough background to follow the rest of the essay where you can read more about deformation and which parameters that are of importance when you study deformation in bitumen concrete as well as the relation between the characteristics of bitumen concrete and bitumen. The essay is then finished with a argumentation about eventual problems with design methods and the significance of the bitumen concrete mixture’s strength parameters and how they affect the thickness of the road superstructure. The conclusion is that the asphalt concrete mixture has an impact on the design of the pavement of the road and that it should be something to take into account more often in road design, especially when you are using a mixture that differs much from the standard mixtures.

Place, publisher, year, edition, pages
2013. , 57 p.
Keyword [en]
btumen, asphalt, asphalt concrete, road, design, PMS objekt, superstructure, pavement
Keyword [sv]
bitumen, asfalt, asfaltbetong, vägar, dimensionering, PMS objekt, överbyggnad, bärlager
National Category
Civil Engineering
Identifiers
URN: urn:nbn:se:kth:diva-142367OAI: oai:DiVA.org:kth-142367DiVA: diva2:699956
External cooperation
Bjerking AB
Subject / course
Constructional Engineering and Design
Educational program
Bachelor of Science in Engineering - Constructional Engineering and Design
Supervisors
Examiners
Available from: 2014-03-03 Created: 2014-03-03 Last updated: 2014-03-03Bibliographically approved

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