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Composites (Asphalt (Consists of hard aggregate & bitumen as a matrix,…
Composites
Asphalt
Consists of hard aggregate & bitumen as a matrix
Crack resistant
Composite material
Tough
Used for surfacing the roads
Can't be contaminated by oil
Hard wearing due to aggregate
Timber
Two types
Softwood (non-pored
Hardwood (pored)
Reasonable performance in bending
Rots
Affected by weather
excellent strength to weight ratio
Affected by pests
Concrete
Far greater strength than cement and is cheaper
Composite material
Consists of cement, sand & aggregate
Strong in compression
Cracks
Heavy
Laminates
Plywood
Used where grain structure of timber causes weakness
Laminated glass
Used when shatter-resistant glass is need
Materials that consist of varying materials sandwiched together
Bimetallic strips
Use two metals back to back
One metal has a different thermal expansion rate than the other
Useful for thermostats
Geotextiles
Used for a wide variety of civil based purposes
Filters in drainage systems
Woven polymers or ceramic fibers
Mortar
Consists of slaked lime, sand & water
Replaced by Portland cement
Material used between bricks in buildings