SPECIALIST EQUIPMENT
Matrix attack in civil concrete
CONFRONTING CORROSION
Manfred Rösch introduces an innovative product designed to tackle corrosion
F
or many years standard concrete has been used as a substrate in areas with high levels of acid contamination, requiring expensive
surface protection systems to protect the underlying structure. Penetration of the concrete layer resulted in damage and
leaching, leading to possible environmental hazards when the acids enter the soils. Tis poses a great threat to the structural integrity of operating plants.
THE EFFECTS OF ACID ON CONCRETE
Te effects of acid exposure on concrete are significant, leading to the formation of a large amount of gypsum near the surfaces. Tis can result in disintegration, mechanical stress, and eventually the spalling of the concrete, revealing the fresh interior surface. Te effects of sulphuric acid on
3CaO.2SiO2 CaSO4.2
26
www.engineerlive.com 75mm cube sample of DCE Cast S99
NCC Geo
Over the past few years, corrosion engineering design methods have shown that there is a greater need for acid- proof concrete. In the current economic climate, it’s important for businesses
H2 O + Si(OH)4 .3H2
concrete as example can be described in the following chemical description: Ca(OH)2
+ H2 SO4 O + H2
==> CaSO4 SO4
==> .2H2 O
to run at optimal levels and avoid unnecessary downtime that could affect their bottom lines. Traditional corrosion protection systems
for concrete mainly use acid coating systems, membrane systems, and acid brick lining systems. Tese provide different layers of protection for the substrate. However, they are often time-consuming to apply and expensive to maintain. With these factors in mind, DCE
Corrosion Engineering has developed an innovative product that can offer the same properties as traditional systems but with faster turnaround times.
THE SOLUTION
DCE CAST S99 NCC GEO is a silica- based acid resistant product manufactured and developed by DCE Corrosion Engineering using local aggregates and additives. It is used for all applications where low absorption and high acid resistance is required. Areas of use include, but are not limited to: electric wiring; counter current decantation (CCD) areas; effluent sumps; industrial flooring and bunded areas; solvent extraction (SX) areas; and acid storage areas. Industries that could benefit from DCE CAST S99 NCC GEO include mining, construction, food and beverage, petrochemical, and refineries. Te user can enjoy several added benefits when deploying this product. Advantages include faster installation
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