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Tribological behaviour of self compacting concrete

Djelal, C. / Vanhove, Y. / Magnin, A.

The use of superplasticizers to obtain concretes that are highly workable, easy to place in formwork and require no vibration has spread throughout Europe in the last few years. The placing process for fresh, so-called self-compacting concrete (SCC) depends on the friction that occurs at the concrete/wall interface. A rectilinear movement tribometer was developed to characterize SCC. The effect of several parameters affecting the concrete/metal plate friction coefficient is examined. These parameters include the roughness of the plate, the sliding velocity against the plate, the pressure or normal stress and the nature of the demoulding agent at the concrete/wall interface. Physical mechanisms are proposed.

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Tribological behaviour of self compacting concrete

Djelal, C. / Vanhove, Y. / Magnin, A.

The use of superplasticizers to obtain concretes that are highly workable, easy to place in formwork and require no vibration has spread throughout Europe in the last few years. The placing process for fresh, so-called self-compacting concrete (SCC) depends on the friction that occurs at the concrete/wall interface. A rectilinear movement tribometer was developed to characterize SCC. The effect of several parameters affecting the concrete/metal plate friction coefficient is examined. These parameters include the roughness of the plate, the sliding velocity against the plate, the pressure or normal stress and the nature of the demoulding agent at the concrete/wall interface. Physical mechanisms are proposed.

Tribological behaviour of self compacting concrete

Djelal, C. / Vanhove, Y. / Magnin, A.

The use of superplasticizers to obtain concretes that are highly workable, easy to place in formwork and require no vibration has spread throughout Europe in the last few years. The placing process for fresh, so-called self-compacting concrete (SCC) depends on the friction that occurs at the concrete/wall interface. A rectilinear movement tribometer was developed to characterize SCC. The effect of several parameters affecting the concrete/metal plate friction coefficient is examined. These parameters include the roughness of the plate, the sliding velocity against the plate, the pressure or normal stress and the nature of the demoulding agent at the concrete/wall interface. Physical mechanisms are proposed.

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Title:

Tribological behaviour of self compacting concrete

Contributors:

Djelal, C. (author) / Vanhove, Y. (author) / Magnin, A. (author)

Published in:

Cement and Concrete Research ; 34 ; 821-828

Publication date:

2004

Size:

8 Seiten, 16 Quellen

ISSN:

DOI:

https://doi.org/10.1016/j.cemconres.2003.09.013

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

mechanische Schwingung , Reibung , Tribologie , Extrudieren , Sensor , oberflächenaktiver Stoff , Grenzschicht , Superplastifizierer , selbstverdichtender Beton , Reibungskoeffizient , Tribometer

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