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Posted: Thu Jan 10, 2013 9:42 pm
by 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.
Posted: Fri Jan 11, 2013 1:56 pm
by 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
Posted: Fri Jan 11, 2013 4:25 pm
by 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.
Posted: Fri Jan 11, 2013 4:59 pm
by Mikey_C
as above re the flexible/rigid if rigid here's another option
epoxy
Posted: Fri Jan 11, 2013 5:10 pm
by simeonronacrete
Posted: Fri Jan 11, 2013 8:34 pm
by local patios and driveway
Ive heard great things about that epoxyset that mikey linked to. Good value too
Posted: Sat Jan 12, 2013 9:34 am
by Bob_A
simeonronacrete wrote: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?
Posted: Sat Jan 12, 2013 9:35 am
by Bob_A
oops double post :p
Posted: Sat Jan 12, 2013 1:39 pm
by TheRockConcreting
Bob_A wrote:Any suggestions for a flexible sealant?
Flexible Polyurea Example
Posted: Sat Jan 12, 2013 1:53 pm
by Mikey_C