Bonding Agents are used in concrete where there is a requirement to join the old and the new concrete surfaces. It is also used to join the surfaces between the successive concrete layers.

Latex or epoxy bonding agents distinctly improve the adhesion of the new concrete or mortar to the old concrete surface. The bonding agents can be used for cold joints. They can also improve water impermeability of concrete. They also serve for polymer modification of cement mortar and concrete. With the addition of bonding agent in repair mortar or concrete, the reduced water-cement ratio can be adopted for the same workability, thereby reducing drying shrinkage.

Styrene butadiene (SBR) latex is a co-polymer which is compatible with the cementitious compounds. They are primarily used for bonding fresh concrete to the old concrete and thin layer toppings. Additionally, they can be used as a plaster bond within 45-60 minutes. These can be used for waterproofing of roof slabs, sunken slabs, basements, water tanks, sunshades etc. in combination with cement