CE115_1

Civil Engineering Materials and Pavement Systems

Dr. Fouad Bayomy, PEProfessor of Civil Engineeringe-mail: bayomy@uidaho.edu

CE115_2

Part I: Civil Engineering Materials

CE115_3

What do CE Material Engineers Do? Design Specify Select Construct Maintain Test and Evaluate Operate Manage

CE115_4

What are CE Materials?

Portland Cement Concrete (PCC) Wood

CE115_5

What are CE Materials? Steel

CE115_6

What are CE Materials? Aluminum

Sohar Aluminum Smelter

CE115_7

What are CE Materials? Asphalt Concrete

CE115_8

What are CE Materials? Geosynthetics

CE115_9

What are CE Materials? Portland Cement Concrete Asphalt Concrete Wood Steel Aluminum Fiber Reinforced Plastics Geosynthetics Soils

CE115_10

Material Properties Physical Chemical Mechanical

Optical Electrical Magnetic Acoustic …….

CE115_11

Physical Properties Unit Weight (Density), Specific Gravity Porosity, Voids Micro and Macro Structure Micro and Macro Texture Color, shape, surface heat absorption Moisture Content Thermal conductivity

CE115_12

Chemical Properties They pertain to the composition and

potential reaction of a material to the surrounding environment Chemical composition Acidity Alkalinity Corrosion resistance

CE115_13

Mechanical Properties They relate to the materials’ response to

applied loads (static and / or dynamic) Strength Stiffness (e.g. elastic modulus) Flexibility (ability to deform and recover shape) Toughness Fatigue resistance Deformation resistance (e.g. creep and rutting) Low Temperature cracking, and high temp

deformation …….

CE115_14

CE Materials Courses at UI CE357 CE556 CE557

www.webs1.uidaho.edu/course numberwww.webs1.uidaho.edu/ce357

CE115_15

Lab Testing

Head of testing machine

Steel ball

Rigid base

Specimen L/3L/3

L/3L/3L/3

Span length, L

25 mm min.

P

P

CE357 Lab

CE115_17

X-ray Computed Tomography

X-Ray Source

Detector

Specimen

Collimator(window)

CE115_18

Image Processing-Air Voids

Air Void

Asphalt Binder

Aggregate

CE115_19

Field Testing using NDT

CE115_20

Example: FWD

CE115_21

Part II: Pavements

Civil Engineers Design, Construct, Maintain, Operate and Manage Pavement structures

CE115_22

Pavement Types Flexible (Asphalt

Pavements) Rigid (Portland

Cement Concrete)

Highways Pavements

Airports Pavements

CE115_23

Pavement Design Empirical Methods Mechanistic Methods

CE115_24

AC

Granular Base

Subgrade

Granular Subbase

Empirical Design

CE115_25

AC

Granular Base

Subgrade

Granular Subbase

Mechanistic DesignLoad stressdistribution

Subgrade

AC

Base

c = Confining stress d = Deviator stress = v - c

v = Vertical stress = c+ d

c

c

c

c=v + d

1-3.78

CE115_27

Design Loads

CE115_28

Materials Testing and Modeling

32

11

K

a

oct

K

aaR pp

pKM

Response depends on constitutive equation.

1

3

3

Pavement Construction Pavement Maintenance

Recycling

CE115_32

Pavement Courses at UI CE475 CE575 CE577

www.webs1.uidaho.edu/course number

CE115_33

Part III: Research and Development

Examples of Some Research Projects at UI/NIATT in the Pavements and Materials

CE115_34

UI Pavement Lab

CE115_35

Adopting Hi-Tech to Develop Simple- to-Use design tools

CE115_36

Involvement of Undergraduate Students

CE115_37

Collaboration with ITD

CE115_38

Pavement Design Software

CE115_39

Recognition of Students and Faculty at the ASCE 150th Anniversary National Convention In Washington, DC

CE115_40

QuestionsContact Dr. BayomyPhone 885-6784e-mail: bayomy@uidaho.edu

To Download the presentation:www.webs1.uidaho.edu/bayomy/ce115