Transcription of Aggregates for Use In Concrete
{{id}} {{{paragraph}}}
Example: dental hygienist
Aggregates for Use In Concrete
2/12/2015 1 Aggregates for Use In Concrete 2 Learning Objective Develop a basic understanding of Aggregates and aggregate properties. 2/12/2015 2 3 Aggregates Fine Consists of natural sand, manufactured sand or crushed stone <3/8 Fine aggregate will pass the # 4 sieve Coarse Natural or crushed stone 3/8 to 1 (or more) Coarse aggregate is larger than a #4 sieve 4 mineralogy Igneous (Latin - Fire ) Formed from volcanic processes and the heating and cooling of magma Example: granite sedimentary (Latin - Settling ) Formed by the layering of sediments due to the action of wind or water Example: sandstone Metamorphic (Greek - Change ) Result from long-term high temperature and pressure on igneous and sedimentary rocks Example: marble 2/12/2015 3 Mineral Composition Particle Shape Surface Characteristics Gradation Soundness Chemical Activity Physical Properties Specific Gravity Hardness Thermal Properties Absorption Elastic Properties Cement Solutions Deleterious Minerals Uniformity Flat Elongated Angular Round Stone Gravel Coatings Roughness Bond to Mortar Freezing and Thawing Workability and Water Requirement of Cement Cement Content Proportions Fine Coarse Salts Artificial Aggregate Maximum Size Toughness Wear Permeability Coarse Aggregate Mineral Composition Particle Shape Surface Characteristics Organic
Mineralogy • Igneous (Latin - “Fire”) Formed from volcanic processes and the heating and cooling of magma • Example: granite • Sedimentary (Latin - “Settling”) Formed by the layering of sediments due to the action of wind or water • Example: sandstone • Metamorphic (Greek - “Change”) Result from long-term high
Loading..
Tags:
Information
Domain:
Source:
Link to this page:
Please notify us if you found a problem with this document: