|
|
|
-
History
- Techniques
- Colors
- Test |
 |
|
|
"I shell begin with pavements, which are the principal of the finishings,
and should be executed with the greatest care and attention to their solidity.
The floor being prepared, fern, if at hand, and if not, straw, is to be
spread over it, so that the timber may not be injured by the lime.
On this is placed a layer of stones, each of which is not to be less than
will fill a man's hand. These being spread, the paviment is laid thereon.
If the rubbish be new, let three parts of it be mixed with one of lime;
but if from old materials, the proportion is five parts to two of lime.
It is then laid on, and brought to a solid consistence with wooden beaters
and the repeated blows of a number of men, till its thickness is about
three quarters of a foot. Over this spread the upper layer, composed of
three parts of potsherd to one of lime, of a thickness not less than six
inches. Over the upper layer the pavement is laid to rule and level, whether
composed of slabs or of tessered." |
| |
M.
VITRUVIO " De Architectura "
|
 |
|
|
The "VENETIAN PASTELLONE " is
an uninterrupted floor surface created during the laying stage.
It is formed by a noble bed, about 25/30 mm thick, composed of a small
quantity of cocciopesto (crushed pottery paste) mixed with an organic
binder - the result of accurate research performed with the cooperation
of a technological laboratory we have been collaborating with for years,
in the research and development of materials (see technical sheet).
The noble bed is covered, for about 1-2mm, by a casting slip, our exclusive
formula, coloured with natural pigments (see technical sheet).
The surface comes ended with linen oil
for a dark surface, with natural wax for a result more polishes. Therefore
polished with a felt, with I use it of blots of it appropriate lapping
machines. The final aspect that is obtained is the same one of the old
venetian pavements. The technical characteristics render this pavement
adapted to use of varied kind:
|
| |
Absence of joints
Low thickness (approximately 25/30 mm.)
Impermeability to the liquids, but ability to make to traspirare the
vapor high Values of bending much.
|
 |
Moreover, we execute on request any personalisation of color, reproduction
of logo or mark on the flooring surface.
SAMPLING ON REQUEST, BY PREVIOUS CASH MAIL.
|
|
COMPOSITION
OF SMALL MASS OF COCCIOPESTO
(CRUSHED
POTTERY PASTE)
The small mass is made of a mixture of fine and large aggregates
of cocciopesto, suitable to form an adequate particle-size analysis
curve, and a binder formed with specific agents that provide its
adhesive nature.
WARNING
The drying speed of the hardened mixture depends on the heat and
water conditions of the environment in which it is laid.
TECHNICAL DATA
| Colour |
Brick
red colour |
| Maximum
diametre |
5
mm. |
| Paste
Water |
Ca.
15% in weight |
Specific
weight of paste:
- dry (determined by free settling)
|
1,65 kg/lt ± 5% |
| -
hardened |
1,9 kg/lt ± 5% |
| Performance
for 1 cm. thickness |
Ca.
20 kg/mq. |
| Mechanical
resistance to compression at 28 days |
>11.6
Mpa |
| Mechanical
resistance to deflection at 28 days |
>
2,8 MPa |
| Static
elastic module |
6.720
N/mm² |
| Dynamic
elastic module |
10.700
N/mm² |
| Adhesion
to concrete |
>
2,3 MPa |
| Freezing
and defreezing cycles. Intact after 30 cycles |
The technical data reproduced
in the present sheet are susceptible to variations due to continuous
studies to improve and optimize the product.
NATURAL COLOURING PIGMENTS
They are mineral substances provided by nature: salts, acids
and sulphides present underground in various forms in more or less
deep mineral deposits which present various types of stratification,
depending on the geological period which brought about their formation.
Just this long geological formation confers the pigments' peculiar
colouring and resistance characteristics, further enhanced after the
various processing stages which, in some types, also involve calcination.
The coloured pigments used by us are the result of four generations
of specialists. They have enthusiastically dedicated themselves, especially
during the last decades, to the difficult processing, the search for
materials and the preservation of techniques that are not in use anymore.
We can thus continue to propose these irreplaceable colours, once
unjustly put aside by the market with the introduction of new, modern,
high performance products, having very different physical characteristics.
The return to the use of natural pigments then is not a fashion but
a rediscovery of their intrinsic properties in applications suited
to their nature.
Already 15.000 years ago, in the Altamira caves in Spain and the Lascaux
ones in France, the CròMagnon man used red, yellow, brown and
black natural pigments in rites and to reproduce nature's colours.
Since then, through the splendour of Greek and Roman art, the Renaissance
to our days, natural pigments have survived, leaving eternal marks
of man's expressive and cultural evolution.
CHEMICAL COMPOSITION
Mineral oxides of natural origin (celadonites-hematites-limonites-manganosites)
in variable combinations according to the various types (in average
20-40 %)
CHEMICAL AND PHYSICAL CHARACTERISTICS
- Outward appearance:
very fine dust in various colours;
- Absolute specific weight: 4 / 5 gr./ lt;
- Apparent density: 400 / 800 gr./ lt;
- Solubility: insoluble both in water and in inorganic solvents;
- pH: 3,5 / 6.
ECOLOGICAL INFORMATION
The coloured pigments are inert and do not disrupt the environment
in any way.
STABILITY
Chemical resistance and resistance to light, lime and moist is excellent.
|
