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TECHNICAL PAPER
(a) Pastes without LS (b) Pastes blended with LS
Figure 8: Volume fraction of pores under different pore size range in pastes
have different levels of refinement compared to that at 90 days. indicated that the late ages re-hydration can not only refine
However Figure 8 demonstrates that the proportion of pores pores (<10 μm) of pastes but also may promote forming large
greater than 10 μm in pastes also have impressive increase pores (>100 μm). However, in general, the increased proportion
at 365 days compared with that at 90 days especially for that of pores greater than 100 μm in paste has not apparent
of pores larger than 100 μm with a considerable growth. It is degradation effect on the mechanical property for mixtures.
(a) P00 365d (b) P15 365d
(c) PLS00 365d (d) PLS15 365d
Figure 9: Micromorphology of pastes under long term water curing with a magnification of 5kX
24 THE INDIAN CONCRETE JOURNAL | NOVEMBER 2022
