The document discusses the advantages and disadvantages of concrete as a building material. Key advantages include its durability, fire resistance, and moldability, while notable disadvantages include susceptibility to cracking and low tensile strength. Overall, concrete remains a widely used construction material despite its drawbacks.

1. Advantages and
Disadvantages of Concrete
Soran University
Faculty of Engineering
Civil Engineering Department
11 June, 2015

2. Welcome
• Abdulla Kawkas
• Abdulaziz Ibrahim
• Sarchia Khursheed
• Wrya Sharif
• Shaida Abdulraheem
• Nechirwan Sabah
• Ashna Kamil
2
Civil
1
Group

3. Outline
1. Introduction
2. Advantages
2.1 Durability
2.2 Fire Resistance
3. Disadvantages
3.1 Cracking
4. Conclusion
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4. Introduction to Concrete
• Concrete is a major
materials that used for
various structural
purpose.
• Components of Concrete
• Uses of Concrete
• Types of Concrete
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5. Advantages
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6. Advantages of Concrete
• Concrete is economical.
• It is not as likely to rot, corrode, or decay as other
building materials.
• Concrete has the ability to be molded into any
desired shapes.
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7. Advantages of Concrete (cont.)
• fire-safe and able to withstand high temperatures.
• casting can occur on the work-site which reduces
cost.
• resistant to wind, water, rodents, and insects.
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8. Fire Resistance
• A fire-resistance rating typically
means the duration for which a
passivefire protection system can
withstand a standard fire
resistance test.
• The ability of a laboratory-
constructed assembly to contain
a fire in a carefully controlled test
setting for a specified period of
time.
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9. Fire Resistance (Cont.)
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• Concrete has a slow rate of heat
transfer, which means that
concrete walls in a home act as a
fire shield.
• concrete does not require any
additional fire-protection because
of its built-in resistance to fire.

10. Durability
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• Durability of concrete is ability to resist
weathering action, chemical attack,
and abrasion while maintaining its
desired engineering properties.
• Types of durability:
• Physical Durability: is against freezing
and thawing action, permeability of
water, temperature stress.
• Chemical Durability: is against alkali
aggregate reaction, sulphate attack,
chloride ingress, delay Enttringites
formation, corrosion of reinforcement.

11. • Factors that affect on the durability of concrete:
• Cement Content: Mix must be designed to ensure cohesion and prevent
segregation and bleeding.
• Compaction: The concrete as a whole contain voids can be caused by
inadequate compaction.
• Permeability: It can be noticed that higher permeability is usually caused by
higher porosity.
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Durability

12. Disadvantages
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13. Disadvantages of Concrete (cont.)
• Low tensile strength
• Low ductility
• Concrete is susceptible to cracking
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14. Cracking
• Cracks can occur when provisions to accommodate these movements are
not made in design and construction.
• Concrete elements that affect cracking:
• More amount of water
• More amount of cement
• Mineral composition
• Shape
• Surface Texture
• Shape
• Surface Texture
• Some admixtures may also affects cracking
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Conclusion
• Today concrete is the most used building material.
• Concrete has a good durability.
• Concrete has a high fire resistance.
• Concrete has some disadvantages.
• Cracking is one of the drawback of concrete.

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Any Question!
Thank You!