Foam glass aggregate lightweight fill, made in BC

A lightweight aggregate made by foaming ground recycled glass in a furnace and breaking it into stone-sized pieces full of sealed air cells.^[6] Enviro-Rock is made entirely from recycled glass.^[11]

About 90% lighter than conventional crushed rock.^[1] Enviro-Rock weighs about 200 kg/m³ loose and 240 kg/m³ at 20% compaction^[3], against about 2,000 kg/m³ for crushed rock.^[1]

It is an accepted lightweight fill product on the BC Ministry of Transportation and Transit Recognized Products List.^[5] Alberta lists it as a potential product pending field performance.^[16][17] Elsewhere, acceptance rests with the project owner and the engineer of record.

Its closed cells make it buoyant, so where the fill can be submerged the design has to hold it down. At Jim Lorimer Park, a site that floods seasonally, the design anchored the fill against uplift.^[18]

Over-compaction and vibration break particles down. Place 300 to 600 mm loose lifts under a static roller with no vibration, or 150 to 300 mm loose lifts under a plate compactor, using more passes rather than more vibration; compact 10 to 20%, and do not use a jumping jack.^[9][10]

In trailer loads from about 45 m³ up to 140 m³, or in 1.7 m³ super sacks.^[4] Delivery covers British Columbia, Alberta, Washington, Oregon and California^[19]; for other sites, ask when you request a quote.