Most of the building designed now are earthquake resistant and can withstand the seismic loads. However, older buildings were constructed long back and needs protection from these seismic loads. A new material have been developed and the material is coated to the structure of the existing building.
The new material created so as it is feasible to spray it on the interiors of the wall to achieve a 10mm thick coating. This coating is sufficient to resist the earthquake loads by reinforcing the walls.
To make this material, a mixture of polymer-based fibers, fly ash and industrial additives are used. Part of Cement is been replaced by fly ash, which is a by-product from the coal burnt in power grid. This reduces the cement content to 60-70 % and thus reducing the carbon dioxide emission from it.
This technique of coating the component of the building can help the older building from earthquake and the demolition of the structure can be prevented. The mix can be mixed with different color and binding materials are used for the complete firm of the coating and thus providing good appearance also.
Fly Ash: Fly ash is a byproduct from burning pulverized coal in electric power generating plants. During combustion, mineral impurities in the coal (clay, feldspar, quartz, and shale) fuse in suspension and float out of the combustion chamber with the exhaust gases. As the fused material rises, it cools and solidifies into spherical glassy particles called fly ash.
Cement: Grade of cement confirming to Indian Standards.
Kit required to develop Protecting Older Buildings from Earthquake by Coating: