Tseung Kwan O Area 137 Fill Bank Compressed Brick

Material category:

Soil / Soil based (organic/mineral)

Identification number:


Sample produced by:


Sample date:

25 Jul 2023 (Produced)

Sample condition:


Site-driven material

This soil (23-1000-349-a) was designated as public fill within the Tseung Kwan O Area 137 Fill Bank.

Basic on site testing determined that the clay content was sufficient for making activities. A large sample of fill was transported to the University of Hong Kong Division of Landscape Architecture, where soil processing is underway.

No additives were added to the soil. This brick was part of an experiment to see which soils performed better with an addition of 30% water. The soil was sieved through a fine sieve resulting in smaller overall particle size. The brick came out of the press easily, however when transported from the press to the drying area it crumbled. The gray markings on the side of the brick are from the press, perhaps from iron or rust?

Soil Additives: None.

Water Content: 30%

Process/Formwork: BRICK PRESS

Surface Condition:


Depth of sample extraction:

On/Above Ground

Slope at extraction point:

35° - 45°

Land Use:

Vacant land/construction in progress

Natural or imported material:





7.5YR 7/3

Soil Structure

Organic Matter: 0.0 %

Coarse: 1.0 %

Sand: 22.5 %

Silt: 14.0 %

Clay: 62.5 %

Production Attribute

Distance from source location: <= 100km

Production Energy: Low

Water Footprint for Production: Low

Collatoral Pollution:Low

CO2 Footprint: Low

Ecological Attributes

Recycling Percentage: 100%

Reclaimed Components: 100%

Fabrication Process

Forming (including compacting/compressing)