ABSTRACT
Figure 1 contains two groups of curves exhibiting differing behavior. For sand contents below 45% by volume, the intruded volume increased steadily with increasing sand content for pore sizes larger than 0.1 /mi. If the sand particles did not disturb the microstructure, all of the curves should superpose upon one another since the results are normalized per gram of cement paste. Therefore, the monotonic increase in volume intruded with increasing sand content suggests that the sand particles are altering the cement paste microstructure.
