Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Investigation on the scattering-filling coarse aggregate self-consolidating concrete
Abstract To secure good flowability and workability of SCC, the volume fraction of coarse aggregate keep at an extremely low level. A new kind of SCC pouring method named scattering-filling coarse aggregate process was invented: it was method to scatter 20% (volume fraction to the finished concrete) of extra coarse aggregate into the fresh SCC mixture to replace the fresh concrete mixture while the concrete was pouring. A high strength (82 MPa) SCC just composing 360 kg/$ m^{3} $ cement and 120 kg/$ m^{3} $ class F fly ash was prepared with this process. With an increase of the extra coarse aggregate replacing ratio from 0 to 30%, the compressive strength of SCC increased steadily and reached a peak value when this ratio is 20%, then the strength dropped sharply. The drying shrinkage ratio and the chloride ion permeability decreased with the increase of that ratio. The scattering-filling coarse aggregate process can cast high strength SCC with lower cementitious materials content and produce concrete with better performance than the ordinary process.
Investigation on the scattering-filling coarse aggregate self-consolidating concrete
Abstract To secure good flowability and workability of SCC, the volume fraction of coarse aggregate keep at an extremely low level. A new kind of SCC pouring method named scattering-filling coarse aggregate process was invented: it was method to scatter 20% (volume fraction to the finished concrete) of extra coarse aggregate into the fresh SCC mixture to replace the fresh concrete mixture while the concrete was pouring. A high strength (82 MPa) SCC just composing 360 kg/$ m^{3} $ cement and 120 kg/$ m^{3} $ class F fly ash was prepared with this process. With an increase of the extra coarse aggregate replacing ratio from 0 to 30%, the compressive strength of SCC increased steadily and reached a peak value when this ratio is 20%, then the strength dropped sharply. The drying shrinkage ratio and the chloride ion permeability decreased with the increase of that ratio. The scattering-filling coarse aggregate process can cast high strength SCC with lower cementitious materials content and produce concrete with better performance than the ordinary process.
Investigation on the scattering-filling coarse aggregate self-consolidating concrete
Shen, Weiguo (Autor:in) / Zhang, Tao (Autor:in) / Zhou, Mingkai (Autor:in) / Cai, Zhi (Autor:in) / Hu, Jingqiang (Autor:in) / Li, Jiasheng (Autor:in)
2010
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Investigation on the scattering-filling coarse aggregate self-consolidating concrete
| Springer Verlag | 2010
Investigation on the scattering-filling coarse aggregate self-consolidating concrete
| Online Contents | 2010
Investigation on the scattering-filling coarse aggregate self-consolidating concrete
| British Library Online Contents | 2010
Investigation on the scattering-filling coarse aggregate self-consolidating concrete
| Online Contents | 2010
Investigation on the scattering-filling stone self-consolidating concrete
| British Library Conference Proceedings | 2009