Public Works Region

Supplying Items For The New Integrated High Court Complex At Bandra Government Colony, Cts No. 629/1234/a, Bandra (east), Mumbai. - All Concrete Should Be Admixed With Integral Hydrophilic Crystalline Admixture (16bars) Reputed Makes Like Bulwark. Taskmek, Grace Or Equivalent For Reducin Permeability By More Than 85% When Tested As Per Din 1048 Part 5 (after Applying Cycles Of Hydrostatic Pressure), For Self-healing Of Cracks Up To A Width Of 0.40 Mm, For Reduced Sulphate Attack And For High Early Strength Of Concrete Etc. This Should Meet The Requirements Specified In The Recommended Dosage Rate Of 1% Complete As Per Manufacturers Specifications To The Entire Satisfaction Of Engineer-in-charge. Hydrophilic Crystalline Admixture Shall Also Have A Corrosion Inhibitant Property And Shall Be Compatible With Any Other Water Reducing Concrete Chemical Admixtures Added To Concrete For Workability Purpose. Crystalline Formation Shall Be Mix Of Cylindrical & Circular In Shape To Have Maximum Filling Of Pores The Admixture Used Shall Have Manufacturers Test Reports And Approval Mandatorily Both From Iits And Irc (indian Road Congress). Approved Makes: Pidilite/ Technonicol/ Myk/ Mapei, Providing & Applying 2 Components, Solvent Free, Liquid Applied Elastomeric Seamless Hybrid Polyurea Polyurethane Membrane, Using High Pressure Plural Component Spray Equipment, To Form A Minimum System Thickness Of 1.5 Mm In Two Or More Passes With A Total Consumption Of 1.5-1.6 Kg / M2. The Membrane Shall Have 100% Solids, Voc Free, Tensile Strength > 15 Mpa As Per Astm D 412, Elongation > 450% As Per Astm D 412, Low Temperature Crack Bridging Ability Of 3.2mm As Per Astm C 1305, Shore A Hardness > 85 Astm D 2240, Puncture Resistance > 1000 N As Per Astm E 154, Water Head Resistance > 7 Bar As Per Astm D 5385.the Coating Should Pass Dynamic Crack Bridging As Per En 1062-7, Method B For 20,000 Cycles At -20 Degree Temperature.