Page 29 - Betoncryll Semitrasparente

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Technical Qualities
BETONCRYLL SEMITRASPARENT is a special acrylic
protective coating for concrete with a coloured
semi‑transparent finish. The product consists of modified
acrylic resins in water dispersion which provide a
waterproof protective coat resistant to frost thaw cycles
and to penetration of CO
2
and SO
2
gases present in smog
and rain, that are today, the worst enemies of concrete
because they cause the carbonation and the consequent
rusting of concrete iron rods. The product also prevents
the development of moulds and algae. Its high vapour
permeability allows BETONCRYLL SEMITRASPARENT to
be used also on masonry, fiber cement and stone. It has a
low odour level, is non inflammable and is friendly to both
humans and the environment.
Ideal Use
Protection and decoration of reinforced concrete,
stone and bricks.
Surface Preparation
Carefully clean the surface to be treated removing any
loose or flaking material, dust, smog or dirt by brushing
thoroughly or washing the surface. New surfaces must be
thoroughly dry and mature and free from grease.
Application Method
On old and powdering surfaces apply as a primer, a coat
of BETONCRYLL SEMITRASPARENT diluted 70 ÷ 80%
with drinkable water. After preparation of the surface,
apply by brush, roller or spray gun (nozzle 1.3 ÷1.7 mm),
two coats of BETONCRYLL SEMITRASPARENT allowing
4 hours between coats. Dilute the first coat 40% and the
second 20% with drinkable water. The final colour of
BETONCRYLL SEMITRASPARENT can vary depending on
the absorption of the surface.
Technical Characteristics
Application
Dilution:
first coat 40%, second coat 20% with drinkable
water (one coat diluted 70 ÷ 80% as a primer for old,
powdering and highly absorbent surfaces)
Yield •
: 11 ÷13 m
2
/l in two coats, depending on the
absorption of the surface
• Application tools: brush, roller or spray gun
(nozzle 1.3 ÷ 1.7 mm)
Application temperature: +5°C ÷ +36°C
(relative humidity not higher than 80%)
Drying time tack free: 1 ÷ 2 h (temperature = 20°C
with relative humidity not exceeding 75%)
Drying time fully cured: 10 ÷ 12 h (temperature = 20°C
with relative humidity not exceeding 75%)
Tools cleaning: water
The product
Composition: modified acrylic resins in water dispersion,
organic and inorganic pigments, preservatives to aid
application and the formation of the surface film.
Specific weight: 1.05 Kg/l ±3% (White)
pH: 8.5 ÷ 9.5
Viscosity: 2,000 ±5% CPS Brookfield
(RVT 20 revs/min. at 25°C)
Storage temperature: +2°C ÷ +36°C.
Keep from freezing
Reaction to fire: negative when applied onto a non
flammable surface: water based material with dry
thickness of less than 0,600 mm
Water Absorption W24: 0.02 kg/m
2
.h
0.5
DIN 52 617
(max. allowed limit 0.5 kg/m
2
.h
0.5
DIN 52 617)
Resistance to washing: conforms to the norm DIN 53 778,
resistant at least 1,000 abrasive circles
Resistance to abrasion: conforms to the norm DIN 53 778,
resistant to more than 5,000 abrasive circles
Adhesion: conforms to the norm DIN ISO 4624
Emission limits of Volatile Organic Compounds (VOC)
according to directive 2004/42/CE:
Classification: A/h; VOC: 26 g/l (max);
Limit Phase I (from 01/01/2007): 50 g/l,
Limit Phase II (from 01/01/ 2010): 30 g/l
Avaliable Colours: shades of BETONCRYLL
SEMITRASPARENT colour chart
Packaging: 1 - 4 - 14 l
Toxicological Data
The product is free of any toxic, pigments or other
components containing heavy metals such as lead or
chrome. Further to this, the product contains no toxic
solvents, aromatics or chlorides. There is no risk of any
dangerous polymerisation. The product is non combustib
and is held to be a non toxic substance if used in the
technically correct manner. Normal cautionary measures
for the handling of water based paints are advised.
No special arrangements are required for the storage,
movement and transportation of the product, any spillag
should be cleaned up using absorbent inert material suc
as sand, soil etc. and then disposed of as any normal
waste product according to national and regional curre
regulations. The transportation must be carried out in
conformity with international agreements.
Specification
Clean the surfaces to be treated, brush or wash away
smog and dust, remove loose or flaking materials. Onto
old, powdery and chalking substrates, apply as primer,
coat of an acrylic protective product such as BETONCR
SEMITRASPARENT by OIKOS diluted 70 ÷ 80%. In case
of new plasters, make sure the substrate is thoroughly dr
and free from any grease or lubricants. After preparing t
substrate, apply two coats of a diluted acrylic protective
coating such as BETONCRYLL SEMITRASPARENT by
OIKOS, waiting 4 hours between coats. All must be
carried out in accordance with the norms of application,
at a cost of …………/m
2
inclusive of materials and labo
Scaffolding not included.
Technical Data Sheet FAC/bs/02
The company Oikos S.r.l guarantees, to the best of its own
technical and scientific knowledge, that the information
contained in this technical data sheet is
correct. Not withstanding that indicated above, Oikos takes
no responsibility for the results obtained through the use
of this product in as much as it is not possible for Oikos to
check or control the application method used. For this reas
we recommend that you check carefully that each product
chosen, is suitable for each individual use to which it is put.