Acid Proof
Concrete & Mortar Durosil DR11 & DR6
Durosil DR11
is a non-cementitious, chemically bonded concrete with a high silica
content (99%), it is highly resistant to all acids bar hydrofluoric
but is unsuitable for contact with alkali applications. It is equally
effective in weak acid and strong acid and unlike conventional silicate
based products, it is totally unaffected by water.
The material
is suitable for total immersion application as well as secondary
containment and at all concentrations and temperatures. It has low
permeability and as there is no apparent cracking or shrinkage,
the need to install a membrane is avoided.
Durosil DR11
can be laid as a screed (minimum thickness 40mm), cast and vibrated
behind shutters, or made into pre-cast shapes. Due to its hardness
(Moh 7) it is eminently suitable for making weir wall or guide blocks
in pickle tanks. Special shapes for gullys, troughs and sumps can
be made in days rather than weeks needed for ceramic earthenware.
Durosil DR6
mortar exhibits all the properties of the concrete and with its
excellent adhesion to earthenware can be substituted for Furane
Resin with the advantages of lower costs and no hazardous fumes.
It can also be laid on a damp substrate.
The products
are supplied in bags of graded aggregates and pre-measured quantities
of liquid in plastic containers. No other additives are needed and
both products can be mixed easily with conventional equipment. Tools
and plant can be cleaned with water.
Physical
Data |
|
DR11 |
DR6 |
|
|
|
|
Bulk Density |
As cast |
2.16 tonnes/m³ |
2.04 litres/m³ |
Grain Size |
|
0 – 6.00mm |
0 – 1.00mm |
Cold Crushing
Strengths |
Typical
3 days |
27N |
20N |
Modulus
of Rupture |
48 hours |
8N |
5N |
Modulus
of Elasticity |
48 hours |
361N |
– |
Temperature
Limitation |
|
700ºC |
700ºC |
Adhesion
to Ceramic Earthenware |
|
Excellent |
Excellent |
Setting
Time |
|
4 hrs –
20 hrs |
4 hrs |
Shrinkage
(BS 812 Pt 120) |
|
0.048
– 0.054%
(equivalent to category A aggregate for all concreting purposes)
|
Pull-Off
Test (BS 1881 Pt 207) |
|
1.39N/mm² |
|
|