Table 2: Properties of the clay brick blocks used.

Samples IRA(1) Dry Mass
(g)
Compressive Strength(2) (MPa)
1 6.9 2406 2.17
2 12.6 2320 2.10
3 9.2 2289 2.16
4 8.6 2338 2.12
5 17.4 2307 2.02
6 3.9 2403 2.04
Average 9.77 2331.4 2.05
Standard deviation ± 4.70 ± 43.86 ± 0.40
COV(3) 19%

(1) IRA: Initial Rate of Absorption, expressed in grams per minute per 30 in2 (193.55 cm2). (2) Compressive Strength: Calculated using the gross area of the unit, MPa. (3) COV: Coefficient of Variation in %.