Hello everyone!
What a great site I've stumbled upon! I think it is right up my alley in what I need information wise to learn as much as I can about stone,and restoring it etc. As I get up to speed, I will look forward to sharing my knowledge with you all. Right now, I'm between a rock and a hard place! Hee,Hee.
I have a job coming up, ( i own a tile
grout and natural stone cleaning and sealing company) and I may have went a bit hog wild in the wrong direction.Perhaps someone can help me out.I have a client which has an etching,problem on her kitchen countertops, and I was under the impression that the way to get it out was to hone it. From reading this forum a bit, I am beginning to thinK i may be wrong. I went out and bought $250 dollars worth of Stone Techs honeing and
polishing kit, and , per their reccomendation, a Makita 7" sander/polisher and some hogshair pads. I have some
marble tiles and am practicing on them,but need to know whether I am over doing it in my approach. Is
honing the way to get the etching out? If not how?
Thank you,
Terence
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 | | Marble | MARBLE: CHARACTERISTICS
This standard includes general information on the characteristics
and common uses of marble and identifies typical problems
associated with the material.
INTRODUCTION
Marble is an extremely hard, metamorphic stone composed of calcite
(CaCO3). It is formed as a result of the recrystallization of
limestone under the intense pressure and heat of geologic
processes. The effect of this process is the creation of a stone
with a very tight crystalline structure and small but definite
porosity. Because of its structure, marble can take a very high
polish and is a very popular decorative stone for architectural and
sculptural uses. The limited porosity of marble, especially
polished marble, makes it less vulnerable to the leaching effects
of water. Calcium carbonate, however, of which marble is composed,
is highly susceptible to attack by acidic agents. Marble is
readily dissolved by acids, even very dilute acids, however the
actual results of acidic exposure will vary with the nature of the
acid. Chlorides, nitrates, sulfates and other chemical compounds
react differently with marble and produce various by-products,
which have a wide range of solubility and impact on the durability
of marble. For this reason, it is always important to determine
the exact type of pollutants causing marble deterioration.
Marble itself can be of two types, one composed of calcite and the
other of dolomite. Dolomitic marble is much more resistant to acid
attack than calcite marble. The color of marble ranges from the
brilliant white of calcite to black, including blue-gray, red,
yellow and green, depending upon the mineral composition.
TYPICAL USES
Marble has many decorative and structural uses. It is used for
outdoor sculpture as well as for sculpture bases; in architecture
it is used in exterior walls and veneers, flooring, decorative
features, stairways and walkways. The way in which the stone is
used may be a factor in limiting or controlling the severity of
exposure. The use or function of the marble may also affect the
feasibility of applying certain treatments, but type of use is not
the primary factor in the major types of deterioration and damage
to which marble is susceptible. | |  |
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