Harish Chandra Research Institute Tender

Providing & Applying polymer modified, flexible cementations negative side waterproofing coating with elastic waterproofing polymers on interior wall plaster surface in three coats @14.35 kg /10 sqm. one coat of self priming of cementatious waterproofing polymer(dilution with water in the ratio of 1:1) and two coats of cementatious waterproofing polymer (dilution with water in the ratio of 3:1 ) after scrapping and properly cleaning the surface to remove pre-existing paint film & loose particles till plaster is visible, complete in all respect as per the direction of Engineer-in-Charge.

Providing and filing of Thermocole in the gape of Expansion Joint as per requirement and direction of Engineer- in - Charge

Providing and fixing in position 4 mm tk. APP sheet to cover expansion/wall joints as per requirement and direction of Engineer- in - Charge

Providing and injecting cement slurry grouting by fixing 10 to 20 mm dia. suitable nozzle of suitable length, over the surface of PCC/RCC/ beam/ etc and along the construction joint line, cracks, wherever required. Fixing of nozzle shall be in the required portion and the Nozzles shall be fixed with suitable size holes preferably by using repercussive hammer drill (electrically operated) including neat cement slurry admixed with water. Soluble non - shrink based chemical shall be injected through the network of nozzles with low pressure grout pumps (PDP) at a pressure of about 2.0 Kg /cm2, preparing cement slurry by mixing cement with non-shrink @ 500 gms/50 kg bag of cement and water, ensuring that Water : Cement ratio does not exceed 2 (by weight). The viscosity of the resultant solution water/cement/non-shrink should not be more than 1.2 centipoises. Plasticizing agent shall be added wherever required. The grouting shall be started at very low pressure and increased gradually to a required pressure. The grouting shall be continued till the hole refuses to take any further grout, even at an increased pressure. Applied pressure shall not be more than the strength of the PCC/RCC/brick masonry. All the required materials i.e cement, water proofing materials etc. will be provided by the party. After completion of grouting operation, the nozzles shall be sealed properly to the satisfaction of the Engineer-in-Charge.