A. As general
- stone should be cleaned with water or with light detergent.
B. Keep stone
work as clean as possible as work progresses. Upon completion, clean stone
thoroughly with water or detergent and water and fiber brushes. Thoroughly
rinse when complete with clean water. Do not use acids or wire brushes.
C. Special consideration and protection shall be
provided when brickwork is cleaned above the limestone. Strong acid compounds
used for cleaning brick will burn and discolor the limestone.
Jerusalem
Limestone according to the ASTM
High
Density
|
|
STANDARD VALUE
|
STANDARD VALUE
|
STANDARD VALUE
|
TEST PROCEDURE
|
PROPERTY
|
Jerusalem Limestone
|
|
Low
Density
|
Medium
Density
|
High
Density
|
11,490
|
|
1,800
psi minimum
|
4,000
psi minimum
|
8,000
psi minimum
|
ASTM
C170
|
Ultimate
compressive strength of dry specimens
|
2,000
|
|
400
psi minimum
|
500
psi minimum
|
1000
psi minimum
|
ASTM
C99
|
Modulus
of rupture of dry specimens
|
0.80%
|
|
12
% maximum
|
|
|