defects in concrete
DESCRIPTION
PREPARED BY NORHAYATI PALILTRANSCRIPT
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PRESENTATION
CONCRETE TECHNOLOGY
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CRACKING ON FLOOR
FACTOR :
Drying shrinkage.
Step placement of concrete from well barrow.
The fast evaporation process
HOW TO OVERCOME
The dump placed correctly into the face of concrete.
The time to place concrete must suitable.
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CRACKING ON BEAM
FACTOR :
Corruption of reinforcement.
Quality of concrete is less.
Standard form of cover concrete is not followed.
HOW TO OVERCOME
Use quality concrete.
Use water free from other particles.
The contractor has to be honestly.
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CRACKING ON THE COLUM
FACTOR :
Silt of plastic.
HOW TO OVERCOME
Perfect vibration.
Perfect curing.
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CRACKING ON WALL
FACTOR :
Joint uneffective.
Curing process is not sufficient
HOW TO OVERCOME:
Plaster back on the surface.
make the process of curing on time.
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FACTOR OF CONCRETE
DAMAGE
1. Design errors.
2. Construction errors.
3. The problem of quality of construction
materials.
4. Geotechnical problems.
5. Problems that can not be predicted.
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Lakaran jenis keretakan yang boleh berlaku pada struktur konkrit.
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1. Errors can occur when making
the assumption the total cost,
followed by carelessness when
making detailed.
2. The design process using the
standard code can produce work
that is not well satisfied.
1. DESIGN ERRORS.
3. The designer must balance
between the theoretical and
practical design.
4. Errors in design will lead to
cracks due to excessive stress
applied to the structural elements.
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The diagram describes the mechanisms of cracking due to loading.
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communication between the engineer and contractor should be
agree well.
Job skills are main factors to the occurrence of any structural
damage.
ERRORS DURING
CONSTRUCTION
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To produce high quality
concrete, the materials used,
such as cement and
aggregates must be in good
condition and meet the set
specifications.
All contractors working
on construction sites should
be monitored to ensure good
quality work.
MATERIALS QUALITY
PROBLEMS
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GEOTECHNICAL PROBLEMS
Geotechnical problems
refers to the basic structure
or pile and the soil itself is a
problem.
insufficient number of
piles during piling or error,
or is likely also the loss of
soil bearing strength due to
the close working.
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Explosion Effect
Effects of Accident
(Collision)
Earthquake Effects
Concrete Deterioration
Factors
Fire Effects
PROBLEMS CAN NOT BE
PREDICTED
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TQVM PN.NORHAYATI BT PALIL
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PREPARED BY :
SURAYA BT ISMAIL
ADAM BIN YUSOFF
ABDULLAH TARMIZI BIN ABD RAHMAN
RAJA NOOR AMIRA
AHMAD FITREE
YOUNG JIA EE