| No. | Marks. | Dimensions in inches. | Age in days. [*] | Area in sq.ft. | Density lbs. per c.ft. | Load. | Remarks. | |
|---|---|---|---|---|---|---|---|---|
| in tons | in tons per sq.ft. | |||||||
| UT1 | 3 | 9×9×9 | 1 | .562 | 131 | 0.70 | 1.66 | Cracked |
| 1.04 | 2.47 | Collapsed | ||||||
| UT2 | 1 | 8.9×8.9×8.9 | 9 | .550 | 125 | 4.27 | 10.50 | Collapsed |
| UT3 | 2 | 8.95×8.95×8.95 | 16 | .556 | 117 | 2.31 | 5.57 | Small cracks appeared |
| 4.23 | 10.20 | |||||||
[*] Age after arrival at laboratory.
“Second set of blocks sent in December 1919.
“This set consisted of six blocks in three pairs, each pair having been rammed with a different quantity of water.
“One of each pair was tested within twenty-four hours of arrival at the laboratory, and the others after drying in the laboratory for twenty-six days.
“The material used was not homogeneous, and the mixture consisted of a very clayey loam, a fibrous loam, sand and large stones. The clayey material gave rise to surface cracks as the blocks dried.
“For results of tests see Table II.
“From the second set of blocks it would appear that it is better to ram with too much moisture than with too little. It will be noted that the density of the wet block was 30 per cent. more than that of the dry block, so that a wall could be carried higher with the dry material than with the wet, although such a wall would never gain the strength which a wet one would upon drying.
TABLE II
| No. | Marks. | Dimensions in inches. | Age in days. [*] | Area in sq.ft. | Density lbs. per c. ft. | Load. | Remarks. | |
|---|---|---|---|---|---|---|---|---|
| in tons | in tons per sq.ft. | |||||||
| VW1 | 1 dry | 8.9×9×8.5 | 1 | .555 | 106 | 0.45 | 0.81 | Cracked at one corner |
| 0.51 | 0.92 | Collapsed | ||||||
| VW2 | 2 dry | 9×9×9 | 26 | .562 | 105 | 2.15 | 3.84 | Collapsed. |
| VW3 | 3 wet | 9.1×9.1×8.9 | 1 | .570 | 134 | 0.55 | 0.96 | Collapsed |
| VW4 | 4 wet | 8.8×8.8×8.9 | 26 | .546 | 110 | 3.20 | 5.86 | Collapsed. |
| VW5 | 5 medium | 9×8.9×9 | 1 | .558 | 126 | 0.60 | 1.08 | Bulged and cracked |
| 0.69 | 1.24 | Collapsed | ||||||
| VW6 | 6 medium | 8.8×8.8×7 | 26 | .546 | 109 | 3.33 | 6.10 | Collapsed. |