Henry C. Adams
Capitolo 76
of these two it combines it is to gradually train the sea-water to
you penetrate the mortar and rots the concrete. The concrete is
it softened, when there is an abnormal amount of sulphuric acid
present, as a result of the reaction of the sulphuric acid of
the salt dissolved by the water on a part of the cements in the
cement. The ferric oxide of the cement is not influences sea subject-
water.
The tests of briquette of cement cleaning up showed that that dipped in
sea-water reached a tall degree of strength to a very more express
percentage that that dipped in fresh water but 1 to 3 cement
and tests of briquette of sand gave an opposite result. At the end of
however, twelve months in which practically all the cements have put
fresh water showed the greatest strength that that rose up sea-
water. When briquettes that have been absorbed in fresh water
and you/he/she has hardened it is broken completely, the centers are found
both rather dry, and if briquettes dipped in show of sea-water a
similar aridity there need is not hesitation in to use the
cement; but if, on the other hand the shows of briquette that the
sea-water has permeated to the inside one, the cement will lose
strength to decompose himself/herself/themselves until doesn't have at all cohesion. It has to be
he/she remembered that it is only necessary for the water to penetrate
to a depth of 1/2 in on every side of a briquette to make him/it
dampens all through, while in practical job, if the water only
penetrated to the same depth, sick-effect very small it would be
experimented, even if from following removals of a skin 1/2 in
I lavish the structure it was able in duration both imperilled.
The middle strength in pounds for thumb of plaza of you are different
notorious brands of cement examined by the Mr. O'Haras were as
it follows:--
Table No 16.
EFFECT OF MARITIME WATER ON STRENGTH OF CEMENT.
Cement clean 1 cement to 3 sand
envoy rises up in
Water maritime Water Fresh Water of Sea Fresh Water