CONSMAT ENUMERATIONS MODULE 2

Natural Aggregates. Manufactured Aggregates

What are the Classification of Mineral Aggregates?

Gravel, Crushed Stone, Sand, Pumice, Iron Ore

Example of Natural Aggregates

Coarse Aggregates. Fine Aggregates

What are the Two Types of Manufactured Aggregates?

Igneous Rocks. Sedimentary Rocks. Metamorphic Rocks

What are the classification of Rocks?

Gneiss, Slate, Quartzite, Marble, Schist

Example of Metamorphic Rocks?

Solid Bed Rocks. Deposits of sand and gravel

What are the sources of aggregates?

Excavation and Quarrying, Transportation, Washing, Crushing, Sizing

What are the Processing of Aggregates?

Organic Materials, Clay and Silt

What are the Deleterious Materials?

Particle Shape and Surface Texture, Particle SIze, Soundness and Durability, Absorption, Specific Gravity, Unit Weight and Voids, Cleanliness, Volumetric Stability

What are the Physical Properties of Aggregate

Coatings, Reactivity to Chemicals, Asphalt Affinity, Volume Stability, Solubility, Surface Charge

What are the Chemical Properties of Aggregate

Toughness, Abrasion Resistance, Polishability, Compressive Strength

What are the Mechanical Properties of Aggregate

Angularity, Flakiness

What are the Two consideration in shape of Material

Shape and Texture of Aggregate, Workability, Water Content

Mixing of Concrete

Water Cement Ratio, Density

Strength of Concrete Mix

Oven Dry, Air Dry, Saturated Surface Dry, Moist or Wet

What are the Moisture Content of a aggregate

Bulk Dry Specific Gravity, Apparent Specific Gravity, Bulk Specific Gravity, Effective Specific Gravity

What are the Four Types of Specific Gravity

Toughness, Hardness and Abrasion Resistance. Strength and Modulus. Reactivity. Cleanliness. Gradation and Particle Size

What are the Properties of Aggregates?