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Methods to optimize aggregate composition: evaluation by concrete experiments
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
2014 (Swedish)Conference paper, Meeting abstract (Refereed)
Abstract [en]

A proper mix design optimizes the environmental impact and the cost effectiveness of a concrete. A minimum cement paste content is desirable without deteriorate the concrete properties. Thus, cement paste content is dependent on the packing properties of the aggregates. Three different methods to optimize the aggregate composition have been evaluated by concrete tests: one curve fitting method and two particle packing methods. Crushed and natural aggregates have been tested at two different w/c ratios. The results show that the methods suggest very different aggregate compositions and they can´t handle fine crushed aggregates that consume a lot of mixing water.

Place, publisher, year, edition, pages
2014. Vol. 50, 201-204 p.
Research subject
Structural Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-39257Local ID: debeb8b3-aea2-4beb-9614-e6ae4a88fd6fOAI: oai:DiVA.org:ltu-39257DiVA: diva2:1012767
Conference
Nordic Concrete Research Symposia : 13/08/2014 - 15/08/2014
Note
Godkänd; 2014; 20140829 (mem)Available from: 2016-10-03 Created: 2016-10-03Bibliographically approved

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Johansson, NiklasEmborg, Mats
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