Weight Or Power Required To Tear Asunder One Square Inch

Description

This section is from the book "The English And American Mechanic", by B. Frank Van Cleve. Also available from Amazon: The English And American Mechanic.

Materials and Mixtures.	Ultim. Resist-ance.
	Lbs.
	112
90 days, 100 parts, water 50...........	52
Boulogne, 1 year, Portland (natural ...................	675
English, 1 year, Portland (artificial.................	462
Portland, 42 days, cement 1, sand 1	142
15 " ........................	134
135 " ........................	233
" English, 320 days, pure...	1152
" " " cement 1,	948
sand 1,	948

Materials and Mixtures.	Ultim. Resistance.
	Lbs.
Portland, English, 320 days, cement 1, sand 2.......	713
45 days, pure and mixed, stiff............	206
" English, pure, 1 month	393
" " 6 mos....	424
Roman, 1 year, from Septaria..	191
" 42 days, cement 1, sand 1	284
" 1 2	199
" " " 1 3	166
Stonemasonry, Roman cement, 5 mos .....................	77

Brick and Granite Masonry, 320 Days.			Lbs.
Cement, Delafield and Baxter....................		Pure..........	68.56
		Cement ... 4	68.5
		Sand...... 1
		Cement... 5	79.87
		Siftings... 1
		Cement... 1	74.5
		Siftings... 2
" Lawrence Co.................................		Pure........	87.37
		Pure.......	53.68
" James River.................................		Cement... 4	62.
		Sand...... 1
" Newark Lime and Cement Co......-		Pure.......	93.25
		Cement... 1	39.62
		Sand...... 2
" Brighton and Rosendale........................ Pure......			80.25
" Newark and Rosendale......................... Pure.......			75.81
" Pure upon bricks...............................................			31.
" 1, sand 1 pure upon bricks.......................................			16.
" 1, " 3 " " ..............................			7.
" Pure upon granite.......................................			27.
" 1, water .5.......................................			20.
" 1, water .42.......................................			27.
" Pure upon bricks, without mortar , mean			45.
Common lime...........	" .........................		6.
" sand............ 2½
Lime paste...... 1	Upon bricks		6.
Sand......................... 3
Lime paste.............1	-.........................		418
Sand..................... 2
Lime paste.........1	.........................		11.41
Sand..................3
Cement paste.......... 5

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