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Construction Methods (CVE 445)

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by

Omar Kandil

on 17 November 2013

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Transcript of Construction Methods (CVE 445)

Sinai University
Faculty of Engineering
Civil Engineering Dept.

Construction Methods
CVE 445

Construction Planning
Dr. Omar Kandil
Soil Processes
Types of Construction
Concrete
Steel
Wooden
Brick
Quality Control & Quality Assurance
Applications
Construction Planning
Construction Planning
Construction site
Construction Planning
Meeting
Meeting
Construction Planning
Meeting
Construction Planning
Meeting
Construction Planning
Meeting
Workshops
Maintenance workshops
Production workshops
Laboratories
Material
Other
Pavement
Steel
Concrete
Construction Planning
Meeting
Construction Planning
Meeting
Construction Planning
Meeting
Construction Planning
Meeting
Construction Planning
Meeting
Concrete Constructions
Aggregates
Bonding material
Admixtures
Concrete components
Concrete Constructions
Concrete uses
Buildings
Bridges
Irrigation works
Tanks
Dams
Concrete Constructions
Cost
Advantage of concrete
Forming
Compressive strength
Heavy wight
Tensile strength
Disadvantage of concrete
Shrinkage
Heavy wight
Permeability
Concrete Constructions
Preparation
Steps of concrete manufacturing
Choice of concrete materials, and design of mixture.
Storage of concrete materials.
Detailing of rebars.
Preparing of formworks.
Concrete casting
Mixing.
Transportation.
Compaction.
Casting.
Finishing.
Concrete after casting
Curing.
Removing the formworks
Repair defects.
Concrete Constructions
Ref.
[Dr. All Bashandy]
Concrete Constructions
Slabs
Solid slabs
Flat slabs
Hollow block slabs
Concrete Constructions
1. Plain concrete
2. Reinforced concrete
3. Pre-stressed concrete
4. Pre-cast concrete
5. High strength concrete
6. Fiber concrete
7. Shotcrete
8. Heavy Weight concrete
9. Mass concrete
Types of concrete
Concrete Constructions
1. Plane concrete (PC)
Compressive strength = 150 : 250 kg/cm


Tensile strength for PC is very small and
can be neglicted
2
Concrete Constructions
2. Reinforced concrete (RC)
Concrete Constructions
3. Pre-stressed concrete
Pre-tension
Post-tension
Concrete Constructions
4. Pre-cast concrete
Concrete Constructions
5. High strength concrete
Compressive strength = 600 : 1400 kg/cm
2
Properties of high strength concrete components
Large aggregates: Must be very strong
Small aggregates: Coarse aggregates
Cement: High quality cement (450:500 kg/m3)
Silica fume: 10:15% / cement content
Superplasticizers
Concrete Constructions
5. High strength concrete
high strength concrete applications
High-rise buildings
Bridges
Off-shore structures
Arched structures
Underground concrete pipes
Pavement
What the difference between high strength concrete and high performance concrete?
Concrete Constructions
5. High strength concrete
Feasibility of high strength concrete
For compressive members (columns, ...)
Concrete Constructions
5. High strength concrete
Advantage of high strength concrete
Compressive strength = 600 : 1400 kg/cm
Twice value of modulus of elasticity (E) - reduction of deflection & deformations
Cost savings
Strength/Unit cost
Strength/Unit volume
Strength/Unit weight
2
Concrete Constructions
5. High strength concrete
Disadvantage of high strength concrete
More brittle sudden failure
Need more quality control
Concrete Constructions
6. Fiber concrete
Cement
+
Aggregates
+
RFT
+
Fibers
=
Fiber concrete
Concrete Constructions
6. Fiber concrete
Fibers
Steel fibers
Industrial fibers
Polypropylene
Polyester
Oclerk
Concrete Constructions
6. Fiber concrete
Advantage of fiber concrete
Increasing of tensile, shear, bending and impact strength
Increasing of toughness
Concrete Constructions
7. Shotcrete
Concrete Constructions
7. Shotcrete
Shotcrete applications
Repair processes
Tunnels
Canal lining
Concrete Constructions
8. Heavy weight concrete
Nuclear reactor, Japan
PC
=2200kg/m
3
RC
=2500kg/m
3
HWC
=3000:5600
kg/m
3
Concrete Constructions
9. Mass concrete
Problems
Heat
Shrinkage
Cracks
low heat cement
lean (poor) mix
Crushed ice
Using
Concrete Constructions
6. Fiber concrete
Full transcript