I am considering specifying ground recycled glass as an aggregate to replace silver/white sand as bedding mortar. As it has no iron content, and a couple of reports on the main website look promising I was wondering if anyone has tried it yet? I have seen it spec'd as a 20% recycled additive but I would like to use it at much higher %.
I've been using the stuff as bedding for both block paving and laying flags for well over 10 years and in my experience it's good to use neat in a mortar mix.
It's very common to use it on commercial projects where recycled materials are specified.
In conjunction with Tameside MBC about 5 years ago we did some testing with crushed glass as a bedding aggregate and it worked really well. We couldn't fault it from a structural or performance point of view; the lads had no problem working it as either individual or screeded beds; and we found it all but eliminated problems with moisture staining with G603 due to the fact it is incredibly porous.
Only problem was the price. In a sand-rich region such as NW Eng-er-land, it's hard to justify a material that was costing 2-3 times as much as the locally quarried, Class II compliant rock dust.
Thanks guys. Decided to go for it to raise my green credentials slightly. Worked really well. Very easy to use and half the price of white sand fir light sandstone.
Thanks again.
