Lytag Geofil. A sustainable, lightweight backfill material used extensively for backfill to structures where good drainage and the weight of imposed loads are a consideration.

Pack Size: 16kg (Approx 20ltr)

Granule Size: Approx. 8-14mm.

Density: LYTAG^® is a lightweight aggregate with a dry bulk density at point of supply of approximately 810 kg/m³. (ie volume for volume Lytag Geo Fill^® is approximately half the weight of "normal" limestone or gravel aggregate).

Moisture Content: As supplied 8-14mm LYTAG Geo Fill ^® is likely to contain a natural moisture content of approximately 15% by weight. For loose lay applications in contact with timber due consideration should be given to appropraite protection and/or treatment Subgrade long term maximum moisture content can rise to a maximum of 30%.

Description & Application:
LYTAG Geofil^® is a sintered lightweight honeycomb aggregate that is resistant to frost and chemicals, and will not break down in water. It is also non combustible and has excellent sound and thermal insulation properties.
This specially graded lightweight aggregate has a minimum of "fines", and is offered for use in situations where aesthetics are not a principal consideration.

Mass (unbound) backfill to structures and services.
Densities are typically 700 to 900kg/m³ for compacted materials depending on ambient moisture content. This reduces imposed loads on retaining structures compared to "normal" aggregates by up to 65%. (Lytag Technical Manual Section 16).
Due to the spherical shape of the aggregate minimal effort is required to achieve full compaction. Typically the material should be placed in layers up to 300mm deep, raked and lightly vibrated. When back filling larger volumes with Geo Fill®, tracked vehicles can be used and subject to local conditions placement depths greater than 300mm can be achieved. Care should be taken when adopting this method to avoid surface crushing of the Geo Fill®

Compacted Geo Fill is likely to contain >40% voids.

Pipe Bedding
Geo Fill® can be used as granular bedding and sidefill of both rigid and flexible pipes. Refer to BS EN 1610 for design requirements.

Vehicle vehicle arrestor beds.
The aggregate does not degrade or compact over time, keeping it effective with the minimum of maintenance.

Source
Lytag^® is made by pelletising and sintering pulverised fuel ash in a rotary kiln at a very high temperature. As it is fired, moisture in the pellets expands to produce a honeycombed core while the outside surface of each granule fuses to a ceramic shell. The resulting granules are lightweight, porous, and have a high resistance to crushing.

Environmental Considerations:
Lytag® is manufactured from former coal fired power station ash, hence allowing for land formerly used for landfill to be reinstated.
As Lytag is approximately 50% the weight of "normal" aggregate, twice the volume can be carried, reducing vehicle movements both on and off highway.
For a given volume, bound Lytag® Concretes and screeds use less cement, therefore providing a significant energy saving.

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Specify: 8-14mm Lytag Geo fill from Specialist Aggregates.

Product Code: 7830

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