**Acknowledgements**

**Figure 10.** Effective moisture transport factor (*EMT*) for reference (Ref) samples and the sample containing 1% rapeseed

**Figure 9.** Effective moisture transport factor (*EMT*) for reference (Ref) samples and the sample containing 1% rapeseed

where *εmcsuc* is the mobile capillary suction porosity and *K″* is the slope of the line obtained from the first 6 h of suction curve. Both *εmcsuc* and *K″* depend on the fineness, connectivity, chemistry, and volume of the mobile capillary suction pores in the material but from different perspectives; thus, a square root of multiplication of these two values can be a criterion for

**Figure 9** shows *EMT* for different w/c ratios of the mixes. The effect of fine pore structure is shown for both adding the same amount of silica fume to different w/c ratios and increasing the dosage of silica fume for a constant w/c ratio. All correlation coefficients from the regression

oil (Oil) and 10, 20, and 30% silica fume(SF) as a function of water to binder (w/b) ratio.

effective mass transport in the material.

oil (Oil), 1% alkyl alkoxysilane (Si), and silica fume (SF).

74 Cement Based Materials

The author gratefully appreciates the Norwegian University of Science and Technology (NTNU) for project funding, professor emeritus Per Jostein Hovde, professor Stefan Jacobsen, and adjunct professor Roar Myrdal at NTNU for their advices as well as the help given by engineer Ove Edvard Loraas in the NTNU laboratory.
