Asphalt Fragment from Informal Road

Material categories:

Composite

Polymer

Identification number:

22-7156-214-a

Sample produced by:

LAU Fong Yui Yvonne

Sample date:

22 Jan 2022 (Extracted)

Sample condition:

Intact

Classification-driven material

This asphalt fragment, a mix of stone aggregate, filler, and bitumen, was found in the far northern fringe of Hong Kong, near old fish ponds and former agricultural areas of Mong Tseng Tsuen. Hastily built roads, like the one this sample came from, are poured directly onto compacted earth as a simple access path for local access. Without a base course or edge detail, they crumble rapidly and are incorporated into the nearby soils.

Location of Sample Extraction:

Mong Tseng Tsuen, Lau Fau Shan, Hong Kong

22.47534669717962, 114.00747890509477

Surface Condition:

Loose

Depth of sample extraction:

On/Above Ground

Slope at extraction point:

< 35°

Land Use:

Residential/ commercial/ government/ institutional/ community lot

Natural or imported material:

Imported

State:

Solid

Ecological Attributes

Recycling Percentage: Below 50%

Reclaimed Components: Below 50%

Recycling potential: High

Expected Lifespan: More than 50 years

Degradation: More than 50 years

Fabrication Process

Forming (including compacting/compressing)

Properties

Coated

Form

Aggregate