Port Royal commercial and Beaufort County Republican. [volume] (Port Royal, S.C.) 1873-1874, 1874-03-12

The above conclusively demonstrate
that the Portland cement is the most
| powerful. durable, and reliable Of all
material used in the construction oi
artificial stone.
In General Gimore's treatise on lime,
hydraulic cements, and mortars, we
| find valuable testimony to the great
superiority Of the Portland above all
other cements. Blocks of each were
moulded-S inches long by , inches
wide and thick under pressure of -
pounds to the square inch. These
were broken on supports four inches
apart, the pressure being applied mid
way between the supports. The blocks
had been kept in sea-wattr after the
first thirty-four hours and were 32O
DAYS old when broken. The weight
requisite to break the Portland. pWre,
was ], ,549 lbs; mixed with one equal
part of sand !, ,260 ponnds; one part
cement and two of sand, $50 pounds.
Out Of twelve other wellknown &C.
ments. the nearest approach to the
above is the Cumberland, which re-
quired breaking of, respectively, 954,
92O and 554 pounds The others were
30 far below as to make comparison alb.
surd.
The cost Of sidewalks varies not only
with the material, but with the facili-
ties for obtaining it and the natural
features of the locality where it is to
laid. Precise figures are difficult TO
give, but it is safe to say that, all
things being considered, the Schlllin-
ger Artificial Stone is decidedly the
cheapest material ever employed.
The walks composed of mixture of
asphaltum with sand and gravel pre-
sent pleasing appearance at first, but
experience shows that changes Of tenn
perature seriously affect them, while
the Odor emenating from the compound
is often very disagreeable; above all,
they fail to bear the wear and tear of
ordinary traffic. Asphaltum was long
used by The ship.builders of Glasgow,
and elsewhere, for lining iron vessels,
but it could not endure tropical heat,
and Portland cement has lately been
substituted; this is found to answer
perfectly, protecting carsoes not only
from heat, but from rust and bilge-wa,
ter.
TO illustrate the endurance of artl.
fetal stone, with this cement for it's
chief ingredient, We will mention the
pavement of King Williams Bridge,
Edinburg; that IN the Courtyard of
the Liverpool Exchange; and the plat.
form and fl ,or of the railroad Station
at Newcastle. These have been laid
for periods ranging from four to four
teen years, and, although subject to
heavy usages, have actually improved
with time. In London, Liverpool, and
other cities of England, it is LARGELY
used for walls and floors of houses,
stables, sc. being found not only dur
able aud economical, but posing hy-
1icuic properties, preventing dampness
by its non. absorbant quality. In many
OF these cities of Continental Europe,
this mnteriai is extensively in roducer +,
and it is destined almost entirely to
superscde all other material for the
same pnrprse. Examination of those
wonderful works, built by the Romans
2,UOD years ago, shows cone u>lvtly
that The material used was in many
respects identical with PJ,tlln ce-
ment, and they bid fair TO remain
intact while the world stands.
To come down to modern days, and
our own city, one has ohly TO examine
the walks recently made at the Bat
terry, around q portion OF the City
Hall Park, aud in otherpublic grounds,
TO be convinced that the ne Plus H,tra
of sidewalks has leen attained.
Being laid, nDt in continuous sheet, ,
but in blocks OF any desired flrm ana
c,lor, great beauty Of appearance can
secured be while the III PRODUCTION OF
material which make the joints per.
fectly water-tight, insures freedom
from all dcteriO.a alton, and enables
blocks TO be taken up intact and with
equal safety as the natural stone. The
adapta5ility of this stone to irregular
surfaces, its smoothness and freedom
from dust, added to its sterling quail
ties of strength and endurance, make it
the very best article which human
ingenuity has ever devised for sidewalks
and building purposes generally
Address Shillinger Stone Artificial