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Quality assessment of light weight aggregate

Nilsen, A.U. / Monteiro, P.J.M. / Gjorv, O.E.

This research presents a procedure for assessing the quality of lightweight aggregate based on the specific energy dissipated by a concrete specimen taken through a stress cycle. For concrete with the same water-cementitious ratio and the same volume of aggregate, lower specific energy loss indicates that the aggregate has higher strength and higher elastic modulus. To validate this hypothesis an experimental program was carried out, where the elastic modulus and compressive strength of concretes made with three different types of aggregate were measured. The relative quality of the three aggregates was known beforehand. The results confirmed a strong relation between specific energy loss and the mechanical properties of aggregate.

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Quality assessment of light weight aggregate

Nilsen, A.U. / Monteiro, P.J.M. / Gjorv, O.E.

This research presents a procedure for assessing the quality of lightweight aggregate based on the specific energy dissipated by a concrete specimen taken through a stress cycle. For concrete with the same water-cementitious ratio and the same volume of aggregate, lower specific energy loss indicates that the aggregate has higher strength and higher elastic modulus. To validate this hypothesis an experimental program was carried out, where the elastic modulus and compressive strength of concretes made with three different types of aggregate were measured. The relative quality of the three aggregates was known beforehand. The results confirmed a strong relation between specific energy loss and the mechanical properties of aggregate.

Quality assessment of light weight aggregate

Nilsen, A.U. / Monteiro, P.J.M. / Gjorv, O.E.

This research presents a procedure for assessing the quality of lightweight aggregate based on the specific energy dissipated by a concrete specimen taken through a stress cycle. For concrete with the same water-cementitious ratio and the same volume of aggregate, lower specific energy loss indicates that the aggregate has higher strength and higher elastic modulus. To validate this hypothesis an experimental program was carried out, where the elastic modulus and compressive strength of concretes made with three different types of aggregate were measured. The relative quality of the three aggregates was known beforehand. The results confirmed a strong relation between specific energy loss and the mechanical properties of aggregate.

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Title:

Quality assessment of light weight aggregate

Additional title:

Qualitätsbewertung von leichtgewichtigen Zuschlagstoffen

Contributors:

Nilsen, A.U. (author) / Monteiro, P.J.M. (author) / Gjorv, O.E. (author)

Published in:

Cement and Concrete Research ; 24 ; 1423-1427

Publication date:

1994

Size:

5 Seiten, 1 Bild, 4 Tabellen, 9 Quellen

ISSN:

DOI:

https://doi.org/10.1016/0008-8846(94)90155-4

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Beton , Leichtbeton , Elastizität , mechanische Eigenschaft , mechanische Festigkeit , Druckfestigkeit , innere Reibung , Zuschlagstoff , Blähton

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