Temperature & shrinkage effect on structural analysis:
1.Introduction:The deformation of structure can be occurred by stresses caused by external loads. But deformation & volume changes can also occur without any external loading. The most important of these are shrinkage & temperature effect.
2.Reasons for shrinkage:
a.By evaporation of water.
b.Drying of concrete.
c.Increasing of temperature.
3.Temperature & Shrinkage effect:
a.It may cause deleterious crack as in slabs,walls etc.
b.In structure that are statically indeterminate & most concrete structure, it may cause large & harmful stresses.
c.It may cause deformation of total structure.
d.It may affect to the fixed joint.
4.Cracks due to temperature & shrinkage effect.
5.shrinkage crack.
6.Crack in wall.
7.Due to accident massive change in temperature of the structure causes the fall of twin tower.
8.Matter of concern during design:
a. Careful during selection of material
b.By analyzing previous weather report.
c.By analyzing previous max temperature record.
d. By predicting the future condition.
e.The coefficient of thermal expansion & contraction should be within the allowable range.
f.By increasing aggregate content.
g.By adjusting water content.
h.Careful curing is needed.
4. Introduction:
The deformation of structure can be
occurred by stresses caused by external
loads. But deformation & volume changes
can also occur without any external loading.
The most important of these are shrinkage
& temperature effect.
7. Temperature & Shrinkage effect:
1.It may cause deleterious crack as in
slabs,walls etc.
2.In structure that are statically
indeterminate & most concrete structure, it
may cause large & harmful stresses.
3.It may cause deformation of total
structure.
4.It may affect to the fixed joint.
14. Due to accident massive change in
temperature of the structure causes
the fall of twin tower:
15. Matter of concern during
design:
1. Careful during selection of material
2.By analysing previous weather report.
3.By analysing previous max temperature record.
4. By predicting the future condition.
5.The coefficient of thermal expansion &
contraction should be within the allowable range.
6.By increasing aggregate content.
7.By adjusting water content.
8.Careful curing is needed.
