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Pore structure of self-compacting concrete
Self-compacting concrete is a new type of cementitious material with a different pores structure than traditional concrete. This influences the durability and more particularly the behaviour with respect to water. In the Magnel Laboratory For Concrete Research, an experimental program was carried out with 7 self-compacting concrete mixes and 1 traditional concrete. The amount of cement was studied, even as the amount of filler (two types of limestone filler were used). Results were given for the water absorption by immersion and for the capillary suction. Also the use of tomography was looked at. The main conclusion is that self-compacting concrete absorbs less water than traditional concrete and the absorption rises with increasing W/C and decreasing cement content. The better behaviour of SCC may be due to more isolated pores. The air pores, caused by the superplasticizer, are considerably large compared to TC1. A 3D-model was created by means of projections obtained from tomography. For the moment the comparison between the results of the tomography and the laboratory tests an water absorption and capillary suction has not yet been established. Further investigation an this matter will carry an in the future.
Pore structure of self-compacting concrete
Self-compacting concrete is a new type of cementitious material with a different pores structure than traditional concrete. This influences the durability and more particularly the behaviour with respect to water. In the Magnel Laboratory For Concrete Research, an experimental program was carried out with 7 self-compacting concrete mixes and 1 traditional concrete. The amount of cement was studied, even as the amount of filler (two types of limestone filler were used). Results were given for the water absorption by immersion and for the capillary suction. Also the use of tomography was looked at. The main conclusion is that self-compacting concrete absorbs less water than traditional concrete and the absorption rises with increasing W/C and decreasing cement content. The better behaviour of SCC may be due to more isolated pores. The air pores, caused by the superplasticizer, are considerably large compared to TC1. A 3D-model was created by means of projections obtained from tomography. For the moment the comparison between the results of the tomography and the laboratory tests an water absorption and capillary suction has not yet been established. Further investigation an this matter will carry an in the future.
Pore structure of self-compacting concrete
Porenstruktur von selbstverdichtendem Beton
Boel, V. (author) / Audenaert, K. (author) / Schutter, G. de (author)
2002
6 Seiten, 5 Bilder, 2 Tabellen, 2 Quellen
Conference paper
English
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