MORTAR.

Volume produced.

Concrete.

One Volume of Sand.

One Volume; of Pebble..

Talus.

Cement.

Water.

Mortar.

Volume produced.

10 Days.

60 Days.

Lbs.

Lb*.

1

•62

1.69

1

1.56

2.8

29

1

103

1.7

3.2

i

1.

1.8

81

1/4

1.

1.

1.

1

•43

1.24

1

1.45

1.6

2.7

1/3

1.

1.

1.9

4

•83

Ml

1.

1.4

•86

•91

Mortar.

Volume produced.

Concrete.

One Volume of Sand.

One Volume of Pebble..

Value.

Cement.

Water.

Mortar.

Volume

Produced

10 Days

60 Days

Lbs.

Lbs.

1/3

•88

1.12

½

1.08

•68

1.2

¼

•86

1.05

1

1.4

•48

1.

½

1.01

•35

•85

1/5

•84

1.

1

1.45

•8

•88

½

1.03

•44

•66

1/6

•32

•96

1

1.45

•41

•81

½

1.03

•86

•79

Experiments of General Totten, 1837.

Cocrete.

MORTAR.

Cement 1.

Cement 1. Sand 5.

Cement 1.

Sand 1.

Lot.

Lbs.

Lbs..

Granite ..1

2.9

2.4

2.3

Mortar..1

Gravel ...1 \

1.4

2.4

•7

Mortar... 2

Concrete. *

Mortar.

Cement 1.

Cement 1. Sand 5.

Cement 1. Sand 1.

Lbs.

Lb..

Lbs.

Stone......

1.9

1.

•6

Gravel.....

Brick......

.9

1.4

1.6

Gravel....

*The granite, bricks, etc., were broken into fragments or spalls of the required size.