Water Based Epoxy System for Concrete

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Applications

 

For the preparation of polymer modified mortars, polymer modified cementitious coating and bonding material for concrete.

 

Salient Features

 

The epoxy latex has been operated by emulsifying epoxy resin based on epichlorohydrine and bisphenol and its hardener in the presence of non-ionic surfactant (HLB value > 15). After emulsification, fillers, deforming and wetting agents were added. It was used for preparing polymer modified mortars, cementitious coating and bonding material for bonding old/new concrete. Formulations have been finalized on the basis of test results. Polymer modified mortar base on epoxy showed better performance as compared to those based on acrylic emulsion with respect to strength , water absorption and impermeability. Bond strength of the bonding agent based on epoxy latex is higher (L>1250 psi) than those based on acrylic and other emulsions (>450 psi). The developed bonding agent conforms to Type-II ASTMC : 1059, while others conform to only Type-I. It is therefore suitable for use in structure exposed to high humid conditions or immersed in water.

 

Technology Package

 

Process know-how document, demonstration , assistance in production.

 

Techno-Economics

 

Investment of Rs. 80 lakh for a plant of capacity 100 ltrs per day.

 

Scale of Development

 

Commercial scale

 

Status of Commercialization

 

Commercialized

 

Raw Materials

 

Epoxy resin base and hardener, surfactant, additives like defoaming and wetting agents.

 

Plant, Equipment and Machinery required

 

Reaction kettle, stirrer, mixer and other lab equipment.

 

Environmental Aspects

 

Normal measures adopted by the paint industry.

 

IPR Status

 

Not applied for Patent.

 

 

For further information please contact

The Director
CSIR - Central Building Research Institute,
Roorkee – 247 667
Phone: +91 – 1332 – 272243