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Fiberföstärkning av Limträbalkar
Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
2013 (svensk)Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
Abstract [en]

Glulam is a product that was engineered to make use of timber in a more efficient way. Bychoosing timber of similar quality and discarding natural defects during production, thedevelopment of a stronger cross-section is achieved.Carbon fiber is a relatively new material with a high tension capacity. This feature is used toexamine how the bending capacity of the beams improve by adhering carbon fiber laminateson the lower edge of the beamsThe strength of the material is tested with three experiments: carbon fiber on the bottom of thebeam (a), carbon fiber attached to the lower sides of the beam (b) and carbon fiber in thebeam, covered with a layer of wood (c)

The results show that the first case, where the carbon fiber is attached to the bottom of thebeam, gave the best result with an increase in capacity of 59 % compared to the nonreinforcedcontrol. The other two cases also show an improvement in capacity, beam-type 3had a capacity increase of 47% and beam-type 4 increased with 25 %Tests were also made with glulam beams reinforced with fiberglass, but these tests were notanalyzed in depth because the purpose was to compare the capacity to carbon fiber. Thisbeam improved its capacity by 40.3%.The tests show that carbon fiber as a reinforcement material for glulam is a good choice whenthere is a requirement for stronger cross-sections in both new production and renovation ofold buildings. However there are some disadvantages to carbon fiber, for example costs andincreased demands on work environment, which makes steel a cheaper option.

sted, utgiver, år, opplag, sider
2013. , s. 118
Emneord [en]
Gluelam, Carbon fibre, bending capacity
Emneord [sv]
Limträ, Kolfiber, Böjkapacitet
HSV kategori
Identifikatorer
URN: urn:nbn:se:mdh:diva-20355OAI: oai:DiVA.org:mdh-20355DiVA, id: diva2:638026
Fag / kurs
Building Engineering
Veileder
Examiner
Tilgjengelig fra: 2013-08-20 Laget: 2013-07-25 Sist oppdatert: 2013-08-20bibliografisk kontrollert

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