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Autogenous shrinkage of self-compacting ultra-high performance concrete (UHPC)

Ma, J. / Dehn, F. / Koenig, G.

In this paper the autogenous shrinkage and internal relative humidity of Ultra-High Performance Concrete (UHPC) was studied. Experiments were earried out an selfcompacting UHPC containing different silica fume contents and water-cement-ratios (w/c). Results showed, that in UHPC with a low w/c or high silica fume content a higher autogenous shrinkage than UHPC with a high w/c or low silica fume content could be observed. But the difference was not significant. All UHPC exhibited a much higher autogenous shrinkage than conventional HPC, which could be resulted from the higher paste volume in UHPC and the volume contracting effect of pozzolanic reaction. The intemal relative humidity in UHPC was similar as that in HPC, so no more intensive self-desiccation took place in UHPC.

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Autogenous shrinkage of self-compacting ultra-high performance concrete (UHPC)

Ma, J. / Dehn, F. / Koenig, G.

In this paper the autogenous shrinkage and internal relative humidity of Ultra-High Performance Concrete (UHPC) was studied. Experiments were earried out an selfcompacting UHPC containing different silica fume contents and water-cement-ratios (w/c). Results showed, that in UHPC with a low w/c or high silica fume content a higher autogenous shrinkage than UHPC with a high w/c or low silica fume content could be observed. But the difference was not significant. All UHPC exhibited a much higher autogenous shrinkage than conventional HPC, which could be resulted from the higher paste volume in UHPC and the volume contracting effect of pozzolanic reaction. The intemal relative humidity in UHPC was similar as that in HPC, so no more intensive self-desiccation took place in UHPC.

Autogenous shrinkage of self-compacting ultra-high performance concrete (UHPC)

Ma, J. / Dehn, F. / Koenig, G.

In this paper the autogenous shrinkage and internal relative humidity of Ultra-High Performance Concrete (UHPC) was studied. Experiments were earried out an selfcompacting UHPC containing different silica fume contents and water-cement-ratios (w/c). Results showed, that in UHPC with a low w/c or high silica fume content a higher autogenous shrinkage than UHPC with a high w/c or low silica fume content could be observed. But the difference was not significant. All UHPC exhibited a much higher autogenous shrinkage than conventional HPC, which could be resulted from the higher paste volume in UHPC and the volume contracting effect of pozzolanic reaction. The intemal relative humidity in UHPC was similar as that in HPC, so no more intensive self-desiccation took place in UHPC.

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Title:

Autogenous shrinkage of self-compacting ultra-high performance concrete (UHPC)

Additional title:

Autogenes Schrumpfen und Selbstverdichtung von Ultrahochleistungsbeton (UHPC)

Contributors:

Ma, J. (author) / Dehn, F. (author) / Koenig, G. (author)

Published in:

ICACS, Advances in Concrete and Structures, International Conference, 2003 ; 255-262

RILEM Proceedings: PRO ; 32

Publication date:

2003

Size:

8 Seiten, 5 Bilder, 1 Tabelle, 9 Quellen

ISBN:

Type of media:

Conference paper

Type of material:

Print

Language:

English

Keywords:

Ultrahochleistungsbeton , Schwindung , selbstverdichtender Beton , relative Feuchtigkeit , Wasser-Zement-Wert , Silicafeinststaub

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