What kind of glue (adhesive) can be bonded between the old and new concrete?
No adhesive between the old and new concrete, as long as the old concrete after the hair, brush a layer of cement paste as a bonding layer, and then pour new concrete.A coating of polymer is OK if you want to.
If you want to buy some processing, interface agent, between new and old concrete can brush a layer of interface agent can be, you have dedicated to building materials market to sell. You put the old concrete after cleaning the surface roughening, or rinse and dry (no water) slightly and then paste brush on interface agent ok,If you want to do it yourself, then do some water reducing agent, 1-2%+ cellulose, 0.01-0.05%+1 parts of cement, their own tune on the brush on it"Or an additive that can be added to concrete?",
Two kinds of adhesive material can be bonded, but various adhesives have resistance to temperature, corrosion resistance and adhesion etc. to adapt to the technical data of the working environment, you must specify the bonded working environment in order to answer you, or is not responsible. I am engaged in polymer adhesion technology, there is a kind of concrete polymer glue, the strength can be achieved, tensile test will not break in the adhesive surface, more than the strength of concrete itself;
