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Crushed Concrete as ballast.

billdadswell

Joined: 1-01-97

Topics: 4

Replies: 7

Posted: Wed 23rd Jun 2010, 9:10pm
Crushed Concrete as ballast.

I am presently involved in the construction of a new line and whilst I appreciate that granite or limestone chippings are the normal materials for ballasting, the oppportunity has arisen to obtain a large quantity of broken concrete in 20cm pieces. Has anyone ever used this as ballast? It is 5 times cheaper than the normal materials and has the required sharp edges to support the sleepers and hold them in place. I am concerned that in a relatively short time they could turn to dust and following rain
become a solid lump and not function as proper ballast.
 

Replies To This Post

johndavies

Joined: 18-10-00

Topics: 2

Replies: 13

Posted: Fri 30th Jul 2010, 1:16am

Hi bill, 20cm is far to big.
Have them recrushed, sived to 6mm-14mm & washed, that way you get hard clean bits.
 

Little Jim

Joined: 10-08-08

Topics: 0

Replies: 2

Posted: Mon 30th Aug 2010, 9:10pm

Yes I would have thought that the concrete would slowly crumbling but it wouldn't reset after rain as the chemical reaction, which makes the concrete set in the first place, isn't reversible.
 
 
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