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Table 2 Comparison of experimental data obtained with different measurement procedures 1

From: Proposal of a new analytical procedure for the measurement of water absorption by stone. Preliminary study for an alternative to the Italian technical normative NORMAL 07-81

Sample measurement trial n° A(%)a Mean A(%)a A(%)b Mean A(%)b A ( % ) b A ( % ) a A ( % ) a 100
WM I 0.621   0.514   -17.2
II 0.618 0.635±0.026 0.560 0.580±0.078 -9.4
III 0.665   0.666   0.1
RM1 I 0.552   0.560   1.4
II 0.644 0.622±0.062 0.570 0.567±0.006 -11.5
III 0.671   0.570   -15.1
RM2 I 0.217   0.213   -1.8
  II 0.260 0.239±0.029 0.177 0.198±0.019 -31.8
  III 0.272   0.203   -25.5