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EABASSOC
LIGHTWEIGHTFOAMED CONCRETE
forRoads and Geotechnical Applications
EABASSOCLIGHTWEIGHT FOAMED CONCRETE
• Made from Sand, Cement, Water & Foam
• Dry Densities from 400 to 1600 kg/m3
• Compressive Strengths from 1 to 15 MPa
• Mix Designs chosen to optimise density, strength and cost
Advantages of Foamed Concrete• Lightweight...does not impose large loadings• Does not settle• Free flowing• Enables Fast Work• Excellent load spreading characteristics• Reliable quality control• Once placed requires no maintenance• Low water absorption over time• Resistance to freeze-thaw cycle• Non-Hazardous
Typical Uses for Roads
• Trench Reinstatement
• Road Widening (Sub-Base)
• Road Building on Soft Ground (Sub-Base)
• Road Repairs
• Bridges over Drainage Channels
Road Widening
Road Sub-Base
Principle of Roads on Soft Ground
Soft GroundSoft Ground = X kg Soft Ground
Soft Ground Soft Ground
Wearing Course = Y kg
Foamed Concrete Road Base = Z kg
Y X+ Z =
Road on Soft Ground - example
0.12m
0.40m
Density of road = 1050 kg/m3
Concrete
Foamed Concrete
Peat
Density (kg/m3)
2400
650
1200
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Bridges over Drainage Channels
Bridges over Drainage Channels
Bridges over Drainage Channels
Bridges over Drainage Channels
Geotechnical Applications
• Landslide Repair
• Soil Stabilisation
• Bridge Abutments (on soft ground)
• Emergency Void Filling
• Mine Fill
• Land Reclamation
• Tunnelling
Landslide RepairNagano Expressway, Japan
Retaining WallWall (8m)
Hillside
A = 0.4mB = 0.3m
27 m
New PlanFoamed Concrete 650 kg/m3
Original PlanTraditional Materials
80m x 50m x 9mLandslip
A = Road Surface LayerB = Basecourse
Terraces
Hillside Stabilisation
Hillside Stabilisation
Hillside Stabilisation
Hillside Stabilisation
Cathedral at Gniezno, Poland
Cathedral at Gniezno, Poland
Cathedral at Gniezno, Poland
Cathedral at Gniezno, Poland
Foamed Concrete Mix Design
sand : cement : water
1.4 : 1 : 0.6
Dry density 900 kg/m3
Bridge Abutment
Bridge Abutment
Emergency Void Fill, Heathrow
Mine Fill
EABASSOCLIGHTWEIGHT FOAMED CONCRETE
• Made from Sand, Cement, Water & Foam• Dry Densities from 400 to 1600 kg/m3
• Compressive Strengths from 1 to 15 MPa
• Road Widening, Sub-Bases, Repairs• Soft Ground• Ground Stabilisation• Emergency and Planned Void Filling
