I studied the specimens of the experiment 04, to find out why they were not homogeneous and they failed to be consistent in the volume. I decide to make new specimens with:
– new mix (120 lt Water, 7 Kg Newspaper, 14.95 Kg Portland cement, 10 Kg sand)
– more accurate proportions
– different mixer
The result was not the desirable again. Specimens were too watery resulting in a long drying period. Shrinkage effect was more visible and because the excess amount of paper in the mix, specimens were also more brittle. Even after 3 weeks, I could still easily deform or even break the specimens. However the surface was less rough and the specimens were more homogeneous.