CE 3700 Midterm
What are the two ways to use aggregates? - Alone: Filler material
Binder: for asphalt or Portland cement
What are the 4 classifications of aggregates? - Source, Specific Gravity, Size, and
Petrography
Define: The description and schematic classification of rocks, aided by the microscopic
examination of thin sections - Petrography
What were the two classifications for an aggregates' source? - Natural and Artificial
Define: Aggregates found in nature - Natural Aggregate
Define: By-Product or waste material from other manufacturing process - Artificial
Aggregate
What are 5 Types of Artificial Aggregates? - Blast furnace slag, Fly-ash, Manufactured
light-weight aggregate, Crushed waste concrete, Crushed Bricks
Define: Stone-like material that is a by-product from the manufacture of iron - Blast
furnace slag
What are the three tiers of specific gravity? - light weight - <2.4
normal weight - 2.4-2.8
heavy weight - >2.8
what are the three tiers of classification size? - coarse aggregate - Retained on No. 4
sieve (.187 in.)
fine aggregate - Passing the No. 4 sieve (.187 in.)
Filler - >70% passing No. 200 sieve (.0029 in.)
What are the 8 properties of aggregates? - Gradation, Specific Gravity, Angularity,
Shape and surface texture, Soundness, Durability, Absorption and Free Moisture,
Strength
What are the 15 common sieve opening sizes? - 3 in.
2.5 in.
2 in.
1.5 in.
1 in.
3/4 in.
.5 in.
.375 in.
What are the two ways to use aggregates? - Alone: Filler material
Binder: for asphalt or Portland cement
What are the 4 classifications of aggregates? - Source, Specific Gravity, Size, and
Petrography
Define: The description and schematic classification of rocks, aided by the microscopic
examination of thin sections - Petrography
What were the two classifications for an aggregates' source? - Natural and Artificial
Define: Aggregates found in nature - Natural Aggregate
Define: By-Product or waste material from other manufacturing process - Artificial
Aggregate
What are 5 Types of Artificial Aggregates? - Blast furnace slag, Fly-ash, Manufactured
light-weight aggregate, Crushed waste concrete, Crushed Bricks
Define: Stone-like material that is a by-product from the manufacture of iron - Blast
furnace slag
What are the three tiers of specific gravity? - light weight - <2.4
normal weight - 2.4-2.8
heavy weight - >2.8
what are the three tiers of classification size? - coarse aggregate - Retained on No. 4
sieve (.187 in.)
fine aggregate - Passing the No. 4 sieve (.187 in.)
Filler - >70% passing No. 200 sieve (.0029 in.)
What are the 8 properties of aggregates? - Gradation, Specific Gravity, Angularity,
Shape and surface texture, Soundness, Durability, Absorption and Free Moisture,
Strength
What are the 15 common sieve opening sizes? - 3 in.
2.5 in.
2 in.
1.5 in.
1 in.
3/4 in.
.5 in.
.375 in.
