WHY YOU NEED Honeycomb Cardboard Voidformer!
If you're not using Clayform in your construction projects, now's the time to get started! Specifically designed to support the weight of wet concrete, Clayform then breaks down over time to form a void which reduces the risk of slab damage caused by reactive soils.
The friendly team at LiteCorp are always available to step you through the benefits of Clayform and how to use it on site. Contact us today to get started with Clayform!
MORE REASONS WHY YOU SHOULD CHOOSE CLAYFORM
Australian Made
Superb strength to weight ratio
Suited for reactive soils
Environmentally Friendly
100% Recyclable
Fast Delivery
NO NEED TO WORRY ABOUT REACTIVE SOILS
Reactive soils occur extensively across Australia.
These soils typically contain a higher proportion of clay and can expand or contract when impacted by high moisture levels. The reactivity level of soil is generally detected in the pre construction phase of a building project via a geo technical analysis. A common solution to prevent the potential for issues caused by ‘expansive’ soils is to install a sacrificial or collapsible ‘void former’ product between the ground and concrete, providing room for the soil to expand should it need to in the future.
THE SOLUTION: CLAYFORM HONEYCOMB CARDBOARD VOIDFORMER
The premier voidforming solution for engineers and builders across Australia. Developed to create space between the soil and building foundation, Lite Corp’s Clayform void former solution eliminates the impact of upward force transmitted to a structure due to ground heave. Clayform has the ability to support the load of concrete during the pouring stage due to its fibre based properties and will break down over time leaving a genuine void.
Protect your structure from the effects of ground heave with our innovative void-forming solutions. Australian-made, lightweight handling yet offering strong support prior to concrete pouring, Clayform solutions are available nationwide with generally fast delivery timeframes from order placement. We also provide a comprehensive specification guide for your reference.
FAQs
Not typically. Styrene is generally used as a void former on residential slabs in the ‘waffle pod’ system. The paper honeycomb cardboard is used in areas of highly reactive soil where waffle pods are not suitable as they do not provide sufficient ‘give’. The paper honeycomb cardboard is used as an alternative to styrene where an environmentally-friendly alternative is needed.
Suspended slab on ground or suspended slab on grade.
- Fully-suspending the slab on piers and metal decking.
- Removing fill from site and importing less reactive fill.
- Deep stiffened raft slab.
Building projects are typically designed to drain to prevent water ponding under concrete. If a project is designed correctly with drainage there will be no ponding where the void is.
Honeycomb void formers will collapse if they receive heavy rain or are exposed for an extended period of time. As per our install guide, we recommend installing the product and pouring concrete as soon as possible following install.
- Coordinate delivery to site so the sheets can be installed as soon as possible. Lite Corp work with reliable freight carriers to ensure timely delivery
- Ensure a well-drained site (e.g. by use of appropriate subgrades).
- Select the individually-bagged option for additional moisture protection.
- Install a blinding layer immediately after installation for particularly wet areas.
- Protect and store the product well prior to installation.
Following are some appropriate subgrades, with 20mm aggregate or smaller:
- Natural surface
- Pea gravel
- Crushed rock
- Crushed recycled concrete
Yes. We use only FSC-certified paper, with 85% recycled material used in the product. It is fully recyclable.
No. Individually-bagged void former will provide temporary protection against weather, however we recommend pouring concrete maximum 3-5 days following installation – and preferably earlier.
On dry sites where rain is not predicted, and the product can be installed and concrete poured within 1-2 days.
Yes, Clayform is manufactured locally by Lite Corp, a family-owned company.
There are several standards relevant to the suspended slab on ground; AS2870-2011 Residential Slabs and Footings contains a range of reactivity classifications, from ‘A’ (little or no ground movement) through to ‘E’ (extreme ground movement from moisture changes). Void former is generally an option for classes H1, H2, E and P. Several further standards then come into play: AS3600:2018 (Concrete Structures, Steel & Tendons), AS1170 (Structural Design Actions), AS2159:2009 (Piling) and AS4671:2001 (Steel reinforcing materials). Each standard must be considered when designing the suspended slab on ground.
Paper honeycomb cardboard void formers are not termite-prone. Following installation they are typically covered with concrete in 3-5 days. They are intended as a temporary formwork while a building is constructed and will degrade through ground moisture over time.
