Henry C. Adams

Capitolo 75

of note that the various mixtures that failed in this
accelerated test failed accordingly also in sea-water to the agenda
among one period of twelve months.

Strong solutions were made following of the individual salts
contained in sea-water, and he/she caresses it was absorbed as before, when
that the sulfate present of magnesium was found in the water
it acted on the hydrate of kick in the cement, while forming kick
sulfate, and free leaving the hydrate of magnesium. The kick
sulfate combines with the alumina of the cement, while forming
I kick sulpho-alumina that swelling of causes and breaking of
the concrete, and in cements that contain a tall proportion of
alumina, leads to destroy completely destruction of every cohesion. The
hydrate of magnesium has a tendency to attentively fill the law with the
concrete as to do him/it more impervious to the destructive one
the sea-water's action, and the disintegration can be delayed or
checked. A tall proportion of magnesia has been found in
exemplary of cement that has failed under the action of sea
you sprinkle, but the disastrous result cannot be attributed to this
substance that has been in excess in the original cement as it
probably it was because of the deposition of the magnesia it salts from
the sea-water;  even if, if magnesia were present in the cement
in the great quantities, it would provoke him/it to expand and to break,
he/she anchors with the small proportion in which it happens in to the agenda
you probably cement it is inactive. The setting of cement under the
action of water frees an usual portion the it cements what it was
combined, but on twice as very you/he/she is freed when the sets of cement
in sea-water as in fresh water. The qualities of setting of cement
it is due to the iron and alumina it combined with kick, so that
for job of sea-coast it is desirable for the alumina to be
replaced the most distant iron possible. The final hardening and
strength of cement is due in a great degree to the trio-kick
silicate (3CaO, SiO2) what soluble is from the chloride of sodium
you found in sea-water, so that the resultant effect of the action