Aggregates
CIVE 202 – Construction Materials
Aggregates
CIVE 202 – Construction Materials
Aggregates Introduction
“Inert, granular, inorganic materials, which normally consist of stone or stone-like solids.” Usage: • Alone – road bases, fill, drainage layers • Particulate Composites - Portland cement concrete - Asphalt A h lt concrete t Typical Proportions (by Volume): • Portland Cement Concrete: 70-80% • Asphalt Concrete: 90% or more
CIVE 202 – Construction Materials
Aggregates
General Properties
Functions: • Economy – inexpensive filler • Dimensional Stability – shrinkage/expansion control • Durability – wear resistance, chemical attack
Classification by Specific Gravity: • Heavyweight (>3.5) • Normal-weight (1.5 – 3.0) • Lightweight (
Aggregates
CIVE 202 – Construction Materials
Aggregates Introduction
“Inert, granular, inorganic materials, which normally consist of stone or stone-like solids.” Usage: • Alone – road bases, fill, drainage layers • Particulate Composites - Portland cement concrete - Asphalt A h lt concrete t Typical Proportions (by Volume): • Portland Cement Concrete: 70-80% • Asphalt Concrete: 90% or more
CIVE 202 – Construction Materials
Aggregates
General Properties
Functions: • Economy – inexpensive filler • Dimensional Stability – shrinkage/expansion control • Durability – wear resistance, chemical attack
Classification by Specific Gravity: • Heavyweight (>3.5) • Normal-weight (1.5 – 3.0) • Lightweight (
