Lytag Concrete Aggregate. Specially graded honeycomb Lytag® aggregate offered for use as a coarse aggregate in the manufacture of lightweight concrete.

Pallet Sizes: 12x16kg packs - sufficient to make approx 0.25m³ of lightweight concrete: 25x16kg packs - sufficient to make approx 0.5m³ of lightweight concrete : 50x16kg packs -sufficient to make approx 1m³ of lightweight concrete. 63x16kg packs - sufficient to make approx 1.25m³ of lightweight concrete.
(Estimates of concrete volumes are based on the concrete mix described below.)

Pack Size: 16kg (Approx 20ltr)

Granule Size: Approx. 4-14mm.

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

Moisture Content: As supplied 4-14mm LYTAG ^® is likely to contain a natural moisture content of approximately 15% by weight.

Description:
Lytag® 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 Lytag® aggregate contains a minimum of “fines”, and is offered for use as a coarse aggregate in the manufacture of lightweight concrete.

Lytag Lightweight Concrete Design:
The design and production of concrete is complex, involving specific data on the properties of the fine aggregate (sand), coarse aggregate (in this instance a lightweight coarse aggregate) and mix design to meet specific structural requirements. For full details of mix designs including reference to appropriate British Standards see Lytag Technical Manual Sections 3 to 5.

The following advice is offered in good faith to produce a “general purpose” non structural concrete. The mix is based on 4-14mm Lytag®, plus natural sharp sand and cement (OPC) sourced separately from a local builders merchant.

A classic “normal aggregate” 4:2:1 concrete mix can be made using Lytag, , ie 48kg of Lytag® Lightweight Concrete Aggregate (3 x16kg packs) , 2 x 25kg Sharp Sand and 25kg Cement. (Bear in mind that the Lytag will provide double the volume compared with "normal" aggregates and hence preserve the principle of the 4:2:1 mix)

Moisture content is a critical factor in determining the final strength of concrete. For DIY or site mixed concrete absolute figures for the volume of added water can not be given as the moisture content of both fine (sand) and coarse (lightweight) aggregate needs to be known. Sufficient water needs to be added to hydrate the cement and make the mix workable. Additional water may be required compared to a “normal aggregate” concrete mix as the Lytag® will absorb moisture, however if the cement paste washes of the Lytag® aggregate the mix is probably too wet.

The above guide lines should produce a Lightweight Concrete which is up to 25% less dense than “normal concrete” with a compressive strength equivalent to at least LC 20:22

Source:
LYTAG ^® lightweight concrete aggregate is manufactured in the UK from reclaimed power station fuel ash (PFA).
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.

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Logistics: ( See also Information / Delivery)
This product option is supplied packed in safe and easy to handle weatherproof packs stacked on a wooden pallet. Packs are stretch wrapped onto the pallet for added protection and security.

Pallets are delivered by national couriers and off-loaded onto a level hard-standing using vehicle tail-lift and pallet truck. Our couriers do not offer a crane (Hiab) off-load facility.

Pallet deliveries by national couriers are not advised for locations with narrow or difficult access. Please advise during checkout or contact our office for advice if you have specific delivery requirements or concerns.

Failed deliveries due to problems with access which as not been pre-notified will be returned to our warehouse and charged for both outward and return delivery,

The immediate product wrapping, pallet stretch wrap and wooden pallet can all be recycled.

Specify: 4-14mm Lytag Concrete Aggregate from Specialist Aggregates.

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