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We are undertaking various Acid / Alkali resisting lining works such as A.R. Bricks lining, Tiles lininig, Epoxy lining, Mastic lining, A.R. Stoneware Pipe lining, Mandana stone flooring, FRP lining, Epoxy Self leveling, Coating, etc. The specificaiton shall be depended upon teh chemical conditions.
 
 
Industrial floor, Drainage, tanks which require corrosion protection should be constructed of reinforced concrete in order to provide the hard and sound base for treatment of Anticorrosive materials the following requirement must be met.
 
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CONCRETE :
 

Reinforce-concrete shall be composed of Portland cement, grif Aggregates of required shape and sizes and cleaned and sieved and in corporated with minimum and required quantity of clean and fresh water. The concrete should be cured for minimum period of 28 days before putting in to service.

The concrete substrate must be structurally sound, clean, dry, dirt free, without Honey comb, free from any laitance, oil and grease and sufficient profile to optimise bond of the protective system to be applied.

The nest step in preparing concrete involves roughening the surface, Abrasuve grit blasting is recomnded fo removing surface laitane and providing an adequate profile.

Acid washing, when required, also provide a good surface for sound concrete. A mixture of one plant Hydrocholoric Acid to two parts or one part. Phosphoric Acid to eight parts water is recommended. Wet the concrete with water, then acid wash. Following the acid etching, reatralize with alkalie solution. Flush throughly with water and allow to dry.

The moisture in the concrete surface may inhibt bond of Anticorrosive products, moisture migration in the surfae, some times acceleratted by change in temperature or barometric pressures can be the reason for blistering and pinholes. The drying of concrete can be accelerated through use of Fan to provide movement over the surface.

   
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Metal Surface :
 
The steel fabrication defects must be checked prior to surface preparation. The welds must be smooth, continous and no cavities, high spots, the slag must be removed by chipping or grinding. The Foreign matter, oil, grease, Dirt should be removed by solvent detergent any removing system. Rust, scale, coating and other Foreign matter must be removed bt Abrasive grit blasting. The cleaned steel surfae provide a surface profile range from 2mm for thin coating and 4 mm for resin bond lining.
   
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Galvanised Steel :
 
The Galvanised steel surface mus be cleaned and free from dust, oil. grease and foreign matter. Remove dirt with stiff brush, scraper or by other suitable system. Oil and grease are removed by using clean rags or brushes wetted with suitable solvent, detergent and Naptha. The treated surfae must be reinsed with hot water or plenty of water flow to remove alkaline residue Cleaned and dry steel surface is suitable for Anticorrosive treatment.
   
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wood surface :
 
The wood surface must be clean and dry. Remove deposites of sap or pitch by scraping and wiping with rags damped with solvent. Loose or flexing boards must be removed and replaced sund wood floor must be stripped to removed and replaced sound wood floor must be stripped to remove coating water, and other substances. Roughen floors to open pores and vacarne dust prior to application of corrosion preventive materials.
   
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SPEICIFCATION FOR CONRETE TANK :
 
Concrete tanks which require corrosive protection should be constructed of reinforced concrete to provide the best concrete subsract for laying the corrosion resistant products the follwoing specification must be met.
   
 
The concrete structure referred as above data should be complied. The required concrete tank should be tested by filling it with water and holding to water for at least 48 hrs. ( All leaks should be repaired). After the concrete has cured it should be cleaned free from all dust dirt, or loose particles. In order to make sure the concrete has curved. Sufficiently place a rubber mat on bottom over night, if it is dry underneath the mat on next day. The dry, clean and sound concrete surface is suitable to start the application of corrosion resistant lining.
   
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APPLICATION OF CORROSION RESISTANT MORTAR To LAY ACID PROOF BRICK / TILES LININg :
 
Resins Mortars are recommended for pickling tanks, Floors, Containmebts dikes, Svamps, Treanches and vessels requring chemical, Physical or thermal resistance of Brick lining.

Resins Mortars based on Furan "Acron", Phenolic Phenon, CNSL Resilex, Bitumen Bitrock Priemer, Polyster Eroplast, Epoxy, Aronel and other protective membrane and Bitrok Mastic can be used as a protective products for chemical resistant brick. Construction, as a bed joint over an impervious layer of Bitumen Bitrok Mastic over previously primed surface.
   
 
Apply the mortar, comprising of Resin syrup and Chemical Resistant Powder in requisite mixing proportion steel trovel. Place sufficient mortar to provide continous bond coat to the required thickness. Apply the mortar to two sides of Acid Resistant Brick.
 
Place the Brick on the setting bed and slide into place to attain a 3 to 4 mm wide joint. Strike the excess mortar before Mortar begins to set. The laid area of Acid Resistant Brick lining should be allowed to set to harden for a period of 7 days before putting the area under servie.
 
Acid Resistant Brick Lining with silicate based. Vicron Mortar as bedding materials and the jont kept opened 6mm wide and 12mm depth will be filled with Resinous mortar over the layer of Bitrok Mastic laid over primed surface.
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Clearing of tools and equipments :
 
Solvent such as MIBK, Toluene, Xylene will remove the materials from the mixing tools and equipments. Fully hardened mortar will have to be removed by mechincal means.
 
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PRECAUTIONS :
  This materials are for Industrial use as such it is advisable to wear hand glose, speicals, gum boot while working on these mortars.
  The Resins should be kept under cold condition and away from heat and open flame.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
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