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Recycled Material for Fill

Recycled Material for Fill

(OP)
Hi, have you ever used recycled (crushed) glass as fill material. Somebody proposed to use it for fill a site (around 1 to 2 meters) for heavy duty roads. Sizes of particles for crushed glass are 3/16" and 7/16". I do not see how you can properly compact it.... Thanks.

RE: Recycled Material for Fill

Gap graded materials generally lack stability and do not compact well as you noted. Further, glass particles will likely break down under compaction. Dust created from glass particles can be a health hazard. Use well graded stone base!

RE: Recycled Material for Fill

(OP)
Ron, agree. however this material will be used as fill. We will have a good well graded granular material for the base. The glass may be used at deeper zones (deeper than GL-1m) but anyways I would prefer "real" soils...

RE: Recycled Material for Fill

(OP)
Thanks f-d, that is a good reference. Have you ever seen crushed glass placement and its further performance?

RE: Recycled Material for Fill

No, I haven't. It must be out there though, 'cause it made our spec book. I've only been at the DOT for 5 years though.

f-d

ípapß gordo ainÆt no madre flaca!

RE: Recycled Material for Fill

Any problems with using a nuclear density meter for compaction testing on this material? I've heard of trouble when using crushed concrete in backfill giving erroneous readings.

RE: Recycled Material for Fill

(OP)
Fortunately, we use more sand cone, but just curious about the reason of the erroneous reading when using the nuclear gage...

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