Comparison with the earlier initial test, constructed using conventional mortar is quite interesting. The test sample was 100 mm
in thickness. The flexural stiffness, prior to cracking, corrected to a
width of 320 mm was 60.1 109 mm2 compared with 196 and
33 109 for the 100 mm deep panels using Clashach and Stoke
Hall stone respectively. Both the depth and the spacing of joints
was the same for all beams.