Coefficient of friction for concrete on concrete 1

[jreng]

What is the coefficient of friction for concrete on concrete. Thanks for any help.

 

[dbuzz]

jreng,

That's an interesting question. What is your application?

The coefficient of friction for concrete on rock is often quoted as 0.30 to 0.4. (whether this is of any help??)

dbuzz

 

[dbuzz]

jreng,

See the response by "Ginger" to the same query (in thread592-11538), copied and pasted here:

Ginger (Civil) Sep 27, 2001
Coeff of limiting friction for concrete on concrete
is taken generally as 0.4 in the UK

This is listed in Table 19 of BS 5975 for various
contact materials

Andy Machon

dbuzz

 

[daqingwa]

Are you talking about

1 concrete cast on top of previously cast concrete ? in which case the surface preparation of the first layer is a factor.

2 or between a concrete block and a concrete surface ? again the finishes on both surfaces are important.

 

[jreng]

The application is for the horizontal crack on an ogee weir.