Henry C. Adams

Capitolo 77

 7 days 682 548 214 224
28 days 836 643 293 319
 2 months 913 668 313 359
 3 months 861 667 301 387
 6 months 634 654 309 428
 9 months 542 687 317 417
12 months 372 706 325 432


Some tests were also served as the Mr. Westinghouse Church,,
Kerr and Co., of New York, to verify the effect of sea-
you sprinkle on the resistance to the traction of mortar of cement. Three sets of
briquettes were made, while having to held up angle a least section of one
thumb. The first ones were mixed with water fresh and kept in fresh
water;  the second was mixed with water fresh, but kept
dipped in saucepans that contain water of salt;  while the bystanders were
mixed with sea-water and kept in sea-water. In the experiments
the proportion of cement and sand it varied from 1 to 1 to 1 to 6.
The results of the tests on the strongest mixtures have shown in
Fig tree. 32.

The manufacturers of cement in Portland Scandinavi have available
tests on cubes of mortar of cement and concrete of cement that were
started in 1896, and it is to extend on one period of winds
years. A relationship on the tests of the first ten years was
submitted at the end of 1909 to the International association
of Testing Material to Copenaghen, and details of them are
published in "Cement and Sea-water", from A. Poulsen (the president of
the committee), J. Jorsen and Co., Copenaghen, 1909 fix the price of 3s.

[The illustration: the Fig tree. 32.--Tests of the Resistance to the traction of
Cement and Briquettes of Sand, Showing the effect of Maritime Water.]

Cements from representative firms in different countries were
gotten for use in to make the blocks that had glass of coloured
beads and coloured crushed glass it incorporated to facilitate
identification. Every block of concrete was offered with a
flat of number and an arrow of lifting, and it was kept dampness for one
month before having put in position. The sand and gravel were
gotten from the beach on the coast of the west of Jutland. The
blocks of mortar were mixed in the proportion of 1 to 1, 1 to 2,
and 1 to 3, and you/he/she had put in the various positions, some among