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Geofill®
Application

  • Lytag Fill should be considered for use as an alternative to ‘normal’ weight aggregates in series 500 and 600 of the Specification for Highway Works.
  • Bulk fill: The product can be used as a bulk fill material replacing natural aggregate. Oven dry density is typically 750 kg/m³. This reduces the dead load and lateral pressure. Due to the spherical shape of the aggregate, minimal compaction is required.
  • Drainage media: On larger applications it can be used instead of Lytag LytaDrain. The particle size and shape of Lytag gives excellent hydraulic conductivity properties. Up to six times more water will pass through the aggregate than standard gravel aggregates, reducing the risk of silt blockages in trench systems.
  • Arrestor beds: Can be used in arrestor beds to bring run-away vehicles to a halt in a controlled manner. Risk of injury and damage to vehicles is minimized. The aggregate does not degrade or compact over time, keeping it effective with the minimum of maintenance.
  • Pipe bedding: Can be used as a granular bedding and side fill for rigid and flexible pipes. BS EN 1610 Construction and testing of drains and sewers details the design requirements.
  • Suitable for residential, commercial and civil projects.

Description

Lytag Fill is a secondary aggregate manufactured by pelletizing fly ash in specially designed dish pelletizing pans. The pellets are then heated on a sinter strand to a temperature of around 1100°C. The result is a hard, honeycombed structure of interconnecting voids within the aggregate. The particles formed are rounded in shape and range in size from 8–14 mm.

Applications:

  • Lytag Fill should be considered for use as an alternative to ‘normal’ weight aggregates in series 500 and 600 of the Specification for Highway Works.
  • Bulk fill: The product can be used as a bulk fill material replacing natural aggregate. Oven dry density is typically 750 kg/m³. This reduces the dead load and lateral pressure. Due to the spherical shape of the aggregate, minimal compaction is required.
  • Drainage media: On larger applications it can be used instead of Lytag LytaDrain. The particle size and shape of Lytag gives excellent hydraulic conductivity properties. Up to six times more water will pass through the aggregate than standard gravel aggregates, reducing the risk of silt blockages in trench systems.
  • Arrestor beds: Can be used in arrestor beds to bring run-away vehicles to a halt in a controlled manner. Risk of injury and damage to vehicles is minimized. The aggregate does not degrade or compact over time, keeping it effective with the minimum of maintenance.
  • Pipe bedding: Can be used as a granular bedding and side fill for rigid and flexible pipes. BS EN 1610 Construction and testing of drains and sewers details the design requirements.
  • Suitable for residential, commercial and civil projects.

Environmental considerations:

The wholly manufactured aggregate, manufactured from the waste product reduces fly ash disposal and less virgin aggregate extraction is required.

DOP certificate (CE mark) available on request.

ISO 9001, 14001 and 18001 certificates, BES 6001 certificate (excellent rating).

General information
Uniclass 2015
Pr_20_31_04_08 Base, bed and fill fine aggregatesPrimary
CAWS

M10/157 Proprietary surfacing to lightweight aggregate levelling screeds M10/

M10/150 Proprietary lightweight aggregate levelling screeds

R13/235 Trenchless drains

R12/14 Plastics pipelines

R13/205 Filter drains with geotextile trench lining

R13/405 Precast concrete pipe culverts

R12/11 Clay pipelines

Q37/350 Drainage layer

R13/211 Filter drains with pipe

R13/225 Narrow slot fin drains

R13/411 Precast concrete box culverts

R16/640 Class X bedding and surround

R13/401 Culverted ditch

R13/201 Filter drains

R17/355 Granular material – rubble

Q28/345 Aggregates

R13/227 Fin drains with pipe

R13/245 Pipe drains with geotextile wrapping

R16/660 Installing silt traps

R13/215 Filter drains with geotextile-wrapped pipe

R13/220 Filter drains with pipe and geotextile trench lining

R13/241 Pipe drains

E10/312 Proprietary aggregate

R13/250 Drainage blankets

R12/497 Granular material – manufactured

Specification data - Base, bed and fill fine aggregates
Product Reference

Geofill®

Standard product features

Technical characteristics:

  • Grade: 8/14 mm.
  • Loose bulk density: 750 kg/m³ (oven dry).
  • Water absorption: 30 minutes: 12.4% by mass, 24 hours: 15.2% by mass.
  • Crushing resistance: 8.1 N/mm².
  • Angle of internal friction: 46°.
  • Fragmentation resistance (LA): 29.0.

Density:

862 kg/m³ based on a moisture content of 15%. This may however vary slightly. Bulk densities are also available.

Literature
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