SEALANT PRODUCTS LIST
DONCRETE 201 : High performance, two- part poly sulphide sealant for expansion joints where large movements are anticipated in concrete construction. Excellent weathering characteristics and U.V. resistant, Conforms to BS: 4254-1983, ASTM C-920,87. More…..
DONCRETE 203 : High performance, two- part polysulphide sealant for sealing expansion joints where large movement in concrete construction. Excellent weathering characteristics and chemical resistant, conforms to BS: 5212. More……
DONCRETE 207 :Polyurea based sealant is formed from an isocyanate reacting with a multifunctional amin. It is also possible to make so called ‘hybrid’ system in which the isocyanate is reacted with a mixture of hydroxyl and amino groups. Polyurea adhesive also lead to new bonding possibilities where they can be used like a spot weld and there is a technique possible where part are preassembled and the adhesive is injected into the bond live through preformed grooves.More……
DONCRETE 210 :The substrate for the application of Doncrete 210 should be free from any unsound substances, oil, dust, grease,vegetations etc. All the old sealants if any should be removed completely. Cleaning should be done by any mechanical mean to achieve a sound surface. If the surface is porous then it should be brushed with mechanical brush so that all the impurity will be removed for better adhesion. The joint width should be kept uniform throughout the section. Before application of the Doncrete 210 the joint the residual moisture should be less than 4% .More……