TY - JOUR
AU1 - Shen, Weiguo
AU2 - Zhang, Tao
AU3 - Zhou, Mingkai
AU4 - Cai, Zhi
AU5 - Hu, Jingqiang
AU6 - Li, Jiasheng
AB - 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/m3 cement and 120 kg/m3 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.
TI - Investigation on the scattering-filling coarse aggregate self-consolidating concrete
JF - Materials and Structures
DO - 10.1617/s11527-010-9585-9
DA - 2010-01-29
UR - https://www.deepdyve.com/lp/springer-journals/investigation-on-the-scattering-filling-coarse-aggregate-self-hfKL1LJnM3
SP - 1343
EP - 1350
VL - 43
IS - 10
DP - DeepDyve
ER -