Grano in inspection chamber

[Pepsiandshirlee]

Is grano same as stone dust ? Would this make any difference when benching an inspection chamber instead of just sand and cement .
What ratio would it be sand cement and grano ?

 

[noseall]

Is grano same as stone dust ? Would this make any difference when benching an inspection chamber instead of just sand and cement .
What ratio would it be sand cement and grano ?

You would never use sand and cement to haunch a chamber. Use ballast and cement with a smidgen of concrete sand chucked in, to help with the fat.

 

[Dereekoo]

You would never use sand and cement to haunch a chamber. Use ballast and cement with a smidgen of concrete sand chucked in, to help with the fat.

Just out of interest what is "concrete sand", ballast has a proportion of fines in it which I understand to be sand. Cheers

 

[noseall]

Just out of interest what is "concrete sand", ballast has a proportion of fines in it which I understand to be sand.

Correct.

Conc' sand is the stuff they add to gravel to make ballast, but is also sold separately and is used for floor screeding, block paving etc.

AKA - concrete sand, screed sand, grit sand, sharp sand.

 

[Pepsiandshirlee]

Correct.

Conc' sand is the stuff they add to gravel to make ballast, but is also sold separately and is used for floor screeding, block paving etc.

AKA - concrete sand, screed sand, grit sand, sharp sand.

Yes been using sharp sand and extra rapid cement . Would the grano make any difference ?

 

[noseall]

Would the grano make any difference ?

Not especially, no.