Foam Concrete

Name: Foamed Concrete
Brand: Porofoam

Foamed Lightweight Concrete

Porofoam is a range of low density foam concrete designed specifically for voidfill, stabilisation and other lightweight applications.

Foamed concrete is a highly workable, low density material incorporating up to 80% air. It is generally self levelling, self compacting and may be pumped. Risk of plastic shrinkage or settlement cracking is significantly lower than that of standard concrete.

Porofoam is manufactured using CEMEX admixtures and is available in a wide range of densities and compressive strengths to suit your application and requirements. The product is easily placed with no compaction required and can be produced onsite by our foam generation units or delivered in trucks premixed.

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Features & Benefits

Foamed concrete is a versatile and practical material which can be tailored to a variety of project needs and operational conditions:

Produced At The Plant Or On-Site

Porofoam is adjustable to meet specific performance requirements and can both density and strength can be controlled.

A Cellular Fill

Less prone to penetration from external contaminants.

Easy To Place & Finish

Single process installation, simply pour and level. Controlled rates of placement to ensure suitability for any loading characteristics.

Cost Effective

Reduced labour and supervision costs & specialist plant (e.g. compactors, vibrators) not needed.

Pumpable

Foamed concrete can be pumped significant distances and can be placed by conventional concrete pump or rotor stator pump (commonly referred to as a ‘Worm Pump’).

Self compacting and self-levelling

Making it ideal for inaccessible trenches where compaction would be difficult or impossible. It allows for controlled discharge into narrow opening, fully fills void space, including undercut pockets and entirely surrounds and protects pipes.

Single operation trench reinstatement

It minimises traffic disruption due to road closure, no need for compaction equipment and there's no need to stockpile granular-fill material.

Good cohesion

This helps to prevent bleeding or segregation, allows controlled discharge through narrow entry points and does not settle after placing.

High air content

This makes it resistant to freeze/thaw and provides good thermal and acoustic insulation.

Controlled density and strength

Low strength allows removal for subsequent access to services and can offer a range of densities and strengths available for each foamed concrete type.

Load spreading

Load spreading with negligible risk of subsidence

Reduced manpower requirements

Can Be Pumped with reduced need for manpower

Highly Fluid

Self Levelling

Insulating Properties

Lightweight

Applications

Foamed concrete is ideal for filling voids such as disused fuel tanks, sewer systems, pipelines and culverts – particularly where access is difficult. It is a recognised medium for the reinstatement of road trenches. Applications include:

Voidfill

Voidfill - A low density flowable fill material to provide a single, engineered solution. The material has guaranteed performance in terms of density, strength, or both. Therefore the density and the strength of the construction layer can be controlled over a greater depth in a one-hit solution compared to traditional fill materials.

Unwanted voids

Pipelines, Service Ducts and Shafts, Sinkholes

Disused structures

Culverts and Subways, Redundant Sewers, Cellars and Basements Higher

Structural stabilisation

Bridge Abutments, Tunnel Stabilisation, Embankments

Insulating Fill

Low density insulating sub-screed, Insulating fill to house over-sites

Roadfill

Roadfill - An efficient and cost-effective reinstatement material that complies with the Roads and Streets Works Act 1991. Porofoam Roadfill is available as FCR Classes C2 and C4. There is no settlement with Porofoam so therefore it can be fully resurfaced in one operation. There is also no need for compaction equipment.

Reinstatement of temporary opening in streets and highways

Protection of buried services

Road Pavement Reinstatements

Tankfill

Tankfill - The more cohesive property of Porofoam Tankfill allows a controlled discharge into tanks with a restricted entry point. Air and gases in the tank are gradually displaced by the foamed concrete . Being a cellular fill, Porofoam is less prone to penetration from external contaminants. Porofoam Tankfill meets the building regulation codes for fire resistance. Applications:

Filling of disused petrol and oil tanks

Filling of effluent and water tanks

Filling of redundant Silos

More Information About Foamed Concrete

DENSITY & STRENGTH

Porofoam can be tailored to your requirements, our technical team will create a suitable mix design for your application. Porofoam can achieve strengths of up to 20 N/mm2and our unique production process allows us to produce an extremely wide range of dry densities from as low as 300kg/m3 up to 2000kg/m3. For strengths and densities outside of this range our team will work with you to provide a solution. .

FOAM CONCRETE PLACEMENT GUIDANCE

Porofoam can be pumped, horizontally, vertically, or directly placed in layers of up to 1m single lift depth in order to maintain the required air void structure. The fluid nature of Porofoam allows the concrete to free flow into even the smallest of spaces making it highly suitable for voidfill applications. Porofoam can be pumped by either a conventional concrete pump or rotor stator pump. The material typically remains fluid for 2/3 hours after mixing with the foam (dependent upon ambient conditions). Porofoam also exhibits no settlement characteristics that may occur with granular fill materials allowing a much more stable fill.

SPECIFICATION TYPES

Porofoam foamed concrete can be supplied with or without coarse aggregate depending on the type and application. The stable bubble structure can be introduced into the mix in three ways:

By blending a pre-formed foam into a mortar base mix after mixing or at site, enabling the achievement of ultra low densities.

By adding specially formulated air-entrained admixtures into the concrete during the mixing process. This generally produces an entrained air content of between 10% and 25%. The resultant material is referred to as High Air-entrained Concrete (HAC) or High Air-entrained Mortar (HAM)

By adding foam generating admixtures to a mortar base mix after mixing or at site. This will produce higher levels of entrained air than air-entraining admixture and consequently a lower density.