Table 5 Results of porosity percentages before Spraying.

From: Application of nano-pico geotechnics and nano-pico heritage spray techniques for restoring and protecting historical brick buildings

Sample No. (i)

\(\:{\alpha\:}_{i}\)

V(ml)

\(\:{\mathbf{W}\mathbf{i}}_{2}\)(g)

\(\:{\mathbf{W}\mathbf{i}}_{1}\)(g)

\(\:{\mathbf{W}\mathbf{i}}_{0}{\rm (g)}\)

1

36

300

667.6

559.6

563.1

2

34

300

669.0

566.2

569.4

3

36

300

689.2

580.8

584.7

4

34

300

692.5

590.7

597.3

5

37

300

699.4

589.3

593.0

6

35

300

682.0

577.6

580.8

7

35

300

696.3

589.0

593.2

8

34

300

666.3

565.4

569.1

  1. W₀ (g): Initial dry weight of the brick sample (grams), W₁ (g): Weight after partial water saturation (grams), W₂ (g): Weight after full water saturation (grams), V (ml): Sample volume (milliliters), αi (%): Porosity percentage calculated for each sample, Sample No. (i): Identifies individual test samples.