Types of cracks in concrete structures are structural cracks and non-structural cracks.
what are the types of crack and their causes and remedies in concrete structures?
There are different types of fractures. Here you can find an article refering to this topic:
http://www.ijera.com/papers/Vol5_issue5/Part%20-%202/S50502119123.pdf
There are another interesting papers about it. If you need more information about this topic let me know.
Best regards
Nati
Shrinkage cracks
Flexural cracks
Shear cracks
Temperature cracks
Many times the cracks were simply due to the natural drying shrinkage of plaster. Other times, thermal-induced cracking observed behind radiators had been noted as indicating possible structural failure requiring an engineer’s attention.
The topic could not by any mean summarised in that simple question. The reasons behind the cracks in structures could be related to the disintegretiy in the design of sections, the construction deficiencies in reinforcement detailing or due to sub-base soil problems, moreover, the detorioration in concrete due to durability design issues of the concrete mix could be a main reason for cracking.
Thank you
I hope the ACI Committee 224.1 (Causes, Evaluation, and Repair of Cracks in Concrete Structures) is useful.
Cracks are divided into two major categories:
a- structural cracks
non-structural cracks
structural cracks are due to
1- inadequate design
2- excessive stresses
3- overloading
4- poor detailing
5- executional errors
If you need more details I can attach to you a file with details
Cracks are divided into two major categories:
a- structural cracks
b- non-structural cracks
structural cracks are due to
1- inadequate design
2- excessive stresses
3- overloading
4- poor detailing
5- executional errors
If you need more details I can attach to you a file with details
Cracks are divided into two major categories:
a- structural cracks
b- non-structural cracks
structural cracks are due to
1- inadequate design
2- excessive stresses
3- overloading
4- poor detailing
5- executional errors
If you need more details I can attach to you a file with details
Type of Cracks
(Concrete Structures)
a- Before Hardening
Plastic Cracks
Plastic Shrinkage
Plastic Settlement
Construction Movement
Formwork Movement
Ground Movement
b- After Hardening
Non-Structural
1. Physical
• Shrinkable Aggregate
• Drying Shrinkage
2. Chemical
• Corrosion of Steel
• Calcium Chloride
• Alkali-Aggregate Reaction
• Sulphate Attack
• Salt Scaling
3. Thermal
• Freezing and Thawing
• Early Thermal Construction
Structural
1. Inadequate Design
• Design Considerations
• Detailing
2. Overloading
• Accidental
• Construction Overloading
3. Differential Settlement
4. Excutional Errors
• Steel Placing
• Concreting
• Curing
• Joints
5. Creep
good luck
Two more classifications can be done on the basis of behaviour
1. Active cracks
2. Dormant cracks
The repair strategy depends on this classification
There are cracks that occurs in fresh and hardened concrete;
CRACKS IN FRESH CONCRETE:
1- Plastic shrinkage cracks, occur where the the rate of bleeding is less than the rate of evaporarion,
2- Settlement cracks, occur around steel reinforcement due to settlement of fresh concrete,
and there are many others.
CRACKS IN HARDENED CONCRETE:
1- Flexural cracks occur in zones where bending moment is dominat, and usually perpendicular to the longintdinal axis of the member,
2- Flexure-shear cracks; usually start vertical and then inclined due to the superposition of the flexural and shear stresses,
3- Shear cracks occur where shear is dominant especialy in thin webs and they are usually inclined,
4- Torsional cracks which spiral the outside faces of the member due to the shear stresses created by torsion,
5- Bond cracks which occur on the tension faces of the member and usually exists at zones of poor bonding between steel and concrete.
You can refer to the ref. below for further information.
following attachment will clarify everything related to cracks in concrete
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