Water permeability of fly ash concretes

  title={Water permeability of fly ash concretes},
  author={S. E. Hedegaard and Torben C. Hansen},
  journal={Materials and Structures},
The water permeability of two series of concretes made with one type of fly ash and two types of Portland cement (OPC and SRPC) was tested by the method prescribed by DIN 1048. It is concluded that the cementing efficiency factor of the fly ash with respect to water permeability is approximately 0.3, independent of type of cement and curing time (28 days and 56 days). In practical terms this means that 1 kg of cement would have to be replaced by approximately 3 kg of fly ash in order to… CONTINUE READING