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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