Based on acid proof tile size, thickness and Joint width, quantity of Grouting mortar required per SqM varies.
Performance requirement of Acid Resistance Bricks as per IS 4860:1968
|Water Absorption, Maximum (%)||2||1.5|
|Flexural Strength, Minimum (Kg/cm2)||100||>100|
|Compressive Strength, Minimum (Kg/cm2)||700||750|
|Resistance to Acid, Loss in weight, Maximum (%)||1.5||1.2|
|Resistance to wear, Averange Wear, Maximum (mm)||2||1.5|
Performance requirement of Acid Resistance Bricks as per IS 4457:2007
|Length & Width, Maximum (%)||0.75||0.6|
|Thickness, Maximum (%)||5||5|
|Water Absorption, Maximum (%)||0.5||0.5|
|Flexural Strength, Minimum (N/mm2)||35||38|
|Breaking Strength, Maximum (N)||3500||2500|
|Resistance to Acid, Loss in weight, Maximum (%)||1.5||1|
|Resistance to Stain|
The concrete floor needs to be free from any surface cracks, and the Ievelling needs to be plain.
Stage 1st: In the stage 1st of work is clean in g of the platform, to remove any loose particles and to give it a rough fi n is h, for application of acid proof primer.
Stage 2nd: After the concrete surface is inspected and found to be free from cracks and defects of any kind, Primers are applied as indicated above, either with b rush or with spray. The primed surface is then allowed to dry until tack free, which under norm and conditions, will take approximately 6 to 8 hours depending upon the temperature at the site of application.
Stage 3rd: Acid proof bitumen mastic, being a solid mass shouId be broken into fairly small pieces. It should be put into a tar boiler and heated upto a temperature of 125° C-150° C. The molten mass is then applied by pouring and smoothening ea layer by trowelling on the horizontal surfaces. However, for vertica, I concrete or MS surface, application is carried out by a square trowel. It is applied in 2 or 3 different coats, each coat approximately 4 mm thick.
Stage 4th: Acid Proof Mortar is prepared by mixing one part by weight of the acid proof solution with three parts by weight of acid proof powder. It is then applied by buttering the edges of acid proof bricks/tiles and by placing them in a position, under squeezing action maintaining a g a p of 3 -5 mm between bricks/tiles. Acid proof mortar should be laid in a manner that it forms a bed of 6 mm between the bricks and the mastic bed.
Stage 5th: The last stage is filling gaps between bricks/tiles by appointing/ grouting material. F or better resistivity to the acid being stored, the g aps in between must be filled with either CNSL, Furan, or Epoxy.
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