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Övergång till helkrossballast: En studie för Strängbetongfabrikerna i Veddige och Herrljunga
2009 (svensk)Independent thesis Basic level (university diploma), 10 poäng / 15 hpOppgave
Abstract [en]

This exam report has been developed in association with Strangbetong AB, Sweden.

The natural gravel that is being used as fine aggregate for concrete production today is an ending natural recourse and the Swedish government has decided to strongly reduce the extraction from the year of 2020. The only reasonable replacement is aggregates from crushed rocks but this material has other properties than natural aggregates. The concrete manufacturers now have to learn how to use these new fine aggregates in a cost effective way in order to ensure the quality of their concrete production.

In this project, crushed aggregates and combination of crushed and natural aggregates have been tested with existing formulas for fresh concrete. The two parameters yield stress and plastic viscosity have been measured which gives a good description of the workability of the fresh concrete. Different methods to make measurements on the dry fine aggregates, has also been tested, to find out if there is any correlations between these parameters and the parameters from the measurement on the fresh concrete.

sted, utgiver, år, opplag, sider
2009. , s. 53
Emneord [sv]
krossballast, stenmjöl, naturgrus, reologi
HSV kategori
Identifikatorer
URN: urn:nbn:se:hh:diva-3230OAI: oai:DiVA.org:hh-3230DiVA, id: diva2:275810
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(engelsk)
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Tilgjengelig fra: 2009-11-24 Laget: 2009-11-07 Sist oppdatert: 2009-11-24bibliografisk kontrollert

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