In the pursuit to complete a construction project in a shorter period of time, a number of studies have been published and methods tested. This thesis study examines if it is profitable to use a higher quality concrete than constructional needed to gain time and economical savings in the production phase of a construction project. High concrete quality possess a high strength class and a low water-cement ratio. If a high concrete quality exhibits shorter formwork striking time, rented components can be returned to the supplier at an earlier stage and economical savings could be made. However, a high concrete quality is more expensive than a low quality concrete, therefore a comparison was made to see if it overall is profitable. The report begins with facts about concrete and formwork. Thereafter a description of the studied construction parts are given. The construction parts belongs to a bridge at Interchange Vega and consist of a footing, column and a superstructure. The study analyzes three different concrete qualities: C 35 / 45 vct 0.40, C 40 / 50 vct 0.38 and C 45 / 55 vct 0.36. The formwork striking time for each construction part was calculated with the three above-mentioned concrete qualities. The calculation was performed by using the calculation program ProduktionsPlanering Betong. A total cost analysis was made based on the formwork striking time where the cost of concrete was compared with the costs for formwork, scaffolding and general costs. Ultimately, on the basis of the results of this research, it can be concluded that the use of a high concrete quality gives shorter formwork striking time and economical savings amongst the construction parts that was studied at Interchange Vega.
| Identifer | oai:union.ndltd.org:UPSALLA1/oai:DiVA.org:kth-232068 |
| Date | January 2018 |
| Creators | Tesfamichael, Elsa, Roka, Laxmi |
| Publisher | KTH, Byggteknik och design |
| Source Sets | DiVA Archive at Upsalla University |
| Language | Swedish |
| Detected Language | English |
| Type | Student thesis, info:eu-repo/semantics/bachelorThesis, text |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | TRITA-ABE-MBT ; 1845 |
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