Enhancing Concrete Life-Span
Concrete structures need to resist many adverse effects externally as well as internally. Though water is very essential and effective for curing of concrete, it becomes a hazard for hardened reinforced concrete. Water can penetrate inside the concrete through the minutest of cracks. Porous nature of concrete facilitates moisture and water to penetrate in through osmotic action. Once water reaches the steel reinforcement in concrete, the process of corrosion begins. This leads to deterioration and reduction in life of structures. Substantial amount of money is being invested in order to protect the concrete structures against the ingress of water.
As an effective preventive measure to protect structures, they can be made watertight while being constructed. We have a range of concrete additives which improve the impermeability of concrete by more than 90%. The advanced technology product like MegaAdd WL3 not only improves the water tightness of the concrete, but also improves the durability parameters listed under BS EN 12390 and BS EN 480. This in turn assists in extending the life of the structure. It improves impermeability of concrete using unique nano technology to modify the cement matrix by reacting with the cement hydrate to reduce pore and capillary size.
Another product, MegaAdd WL2 is extremely effective in making concrete hydrophobic. It is an integral water repellent admixture based on a blend of long chain selected organic derivatives.
In Doors East Africa LTD has a wide range of liquid applied membranes with crack bridging ability. These help in achieving joint-less membranes to cover the intricate shapes and sizes of the substrate. These products can resist 5 to 7 bar hydrostatic pressure.
We also have a range of penetrating, surface applied products to improve the water tightness of concrete structures. These products are based on latest technology of waterproofing by crystallisation. These crystals penetrate inside the concrete and seal the pores and capillaries. In a way, it is a “sub surface membrane” which remains active throughout the life of the structure. They form the first line of defence against water ingress. To stop the water from running leakages, In Doors East Africa LTD has a range of injection products based on Poly Urethanes, Epoxy and Cement. This exhaustive, wide range of liquid applied waterproofing products provide complete building envelope for protection.
