Ask at your local concrete supply outlet.

Bonding Agent
A substance applied to an existing surface to create a bond between it and
a succeeding layer, as between a bonded overlay and existing concrete
pavement.

Concrete has a high silicon content.

POLYMERIC BONDING (AGENTS FOR NEW TO OLD CONCRETE)

* POLYDEE BOND-RES---- BONDING CEMENTICIOUS BONDING AGENT.

* POLYCRYL-PS- CEMENTICIOUS BONDING AGENT

DRIPSEAL-BA-34
(Bonding Agent)
It is an Epoxy based formulation specially designed for bonding old concrete
and new concrete/ plaster providing monolithic surface. Normally cement
slurry is used in such conditions, which does not perform to the
satisfaction and shrinkage crack is developed at the junction of old
concrete and new concrete. This crack becomes the source of leakage.
DRIPSEAL-BA-34 has excellent bonding with almost all types of construction
material, so hacking or chipping of old surface is not desired.
DRIPSEAL-BA-34 is available in liquid form and two pack system. Both parts
are to be mixed and applied on old concrete. Fresh concrete/plaster is laid
when the coating is little touch dry.

DRIPSEAL-BA-34 provides excellent bond when used for :-
Bonding old concrete and new concrete of slab, and column etc.
Bonding old concrete and new concrete in case of repair of pot holes.
It can also be used as adhesive for bonding metals, glass, wood, similar and
dissimilar materials.

Thorobond
Liquid Bonding Agent for Plaster and Portland Cement
--
Chipper Wood

useours, yours won't work





"RB" wrote in message
...
What is a silicon bonding agent?

RB

Chipper Wood wrote:
First enlarge the hole so that all parts of it are at least 1 inch deep.
Vacuum out the hole if possible etch the old concrete with diluted
muriatic
acid. Rinse thoroughly and apply a liquid silicon bonding agent before
filling the hole with new cement.