Best way to repair concrete

[seanandruby]

can you put a face to her :;):
I'd cut a channel 30 ml deep and wider than the gash, scabble it prime with a sbr solution and fill with grano if it's just for industrial use. Or you could use renderoc or similar. Also simeonocrete has some good products.

[TheRockConcreting]

When repairing that joint be sure to use a flexible sealant, if you use a hard epoxy resin or something it will be like throwing a spanner in the works!

Flexible Polyurea Example

[simeonronacrete]

Hi

If it's a flexible joint, i.e. if it is moving and will continue to move, then fill with a flexible sealant, otherwise it will crack again.

If it's static, not moving, then use a rapid strength gain repair mortar. Since the joint is long and thin it's likely to crack - mechanical dynamics - but if the repair is well bonded to the sides and the base all it will do is crack, it won't debond.

Suggest you use RonaFloor Epoxy Floor Mortar Rapid together with RonaFloor Epoxy Floor Mortar Primer.

The joint must be mechanically prepared to achieve clean straight edges; scabble or key the base too.

By all means give our Technical Manager Mike Rhodes a call to run through it; 01279 638 700.

[Mikey_C]

as above re the flexible/rigid if rigid here's another option

epoxy

[simeonronacrete]

Here is link to the product I mentioned.

RonaFloor Epoxy Floor Mortar Rapid

Also see cement version:

RonaFloor Floor Repair 1 Hour 6-50mm

[local patios and driveway]

Ive heard great things about that epoxyset that mikey linked to. Good value too

[Bob_A]

If it's a flexible joint, i.e. if it is moving and will continue to move, then fill with a flexible sealant, otherwise it will crack again.

Any suggestions for a flexible sealant?

[Bob_A]

oops double post :p

[TheRockConcreting]

Any suggestions for a flexible sealant?

Flexible Polyurea Example

[Mikey_C]

poly whatsit as described on the main site