Civil
Engineering
Material
Concepts
Engineering Properties
1.1
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Civil Engineering Materials Properties, Slides of Civil Engineering
Mechanical, physical, and chemical properties of civil engineering materials
Typology: Slides
2022/2023
1 / 19
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Civil
Engineering
Material
Concepts
Engineering Properties
1.
Categories
Civil Engineering
Materials
Conventional
Materials
Conventional
Concrete
Steel
Timber/wood
Alternate
Materials
Bamboo
Adobe
Composite
Materials
Conventional
concrete with
carbon fiber
Engineered
wood
Smart Materials
Smart Concrete
Categorie s
Civil Engineering Materials
Metallic Steel Iron Aluminum Inorganic Solids Aggregate Glass Portland Cement Concrete Organic Solids Asphalt Plastics Wood
Selection Location Type of Building Scale Service life Sustainability Structural frames Concrete framed Steel frame d Wood frame d
SELECTION Selection considerations
Economic factors
Mechanical
properties
Non-mechanical
properties
Production
Construction
Aesthetics
Sustainability
Variability
Selection Economic Availability of raw materials Manufacturing costs Transportation Placing Maintenance Sustainability
Selection Non-Mechanical Density Density Unit Weight Specific Gravity Thermal Expansion Contraction Surface Characteristics
Selection Material Aggrega te Concrete Aggregate Asphalt Aggregate Concrete Cast Precast Grout Cellular Asphalt Hot-mix Cold-mix Wood Lumber Plywood OBS Steel Shapes Re-bar Cold- formed Masonry Clay Concrete Block
Stress- Strain Stress is load factored with size so that we can directly Compare materials of different sizes Stress (psi, ksi, kPa, MPa, Gpa) = Force/Area Strain is deformation factored with size so that we can directly Compare materials of different sizes Strain (%, in/in, mm/mm) = Change in Length/Original Length
Yield
Strength
- Maximum stress a material will tolerate before plastic deformation begins.
Modulus of
elasticity
Yield Strength (σY) = Applied Force (F) Original X-sectional Area (Ao)
Stress- Strain
Stress-Strain Property Material (^) Modulus of Elasticity Poisson's Ration Concrete 14-40 0.11-0. Steel 200 0. Wood 6-15 0.29-0.
Thermal Expansion Expand as temperature increases and contract as temperature decreases The amount of expansion per unit length due to one unit of temperature increase is a material constant and is expressed as the coefficient of thermal expansion 𝛼 𝐿 =