This ppt is on topic curing of concrete

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 NAME : SHAH RUSHABH HEMANT
 ROLL NO. : 852
 DISP. : S.Y.C.S
 TOPIC : CURING OF THE CONCRETE
SHAH RUSHABH . H. ROLL NO. 852 SYCS

2. CURING OF
CONCRETE
SHAH RUSHABH . H. ROLL NO. 852
2 SYCS

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CONCRETE
 One of the most versatile materials for use in
construction is one consisting of naturally
occurring products which have been most
readily available during the 20th century.
 This material is ultimately flexible in its practical
applications. Capable of being formed into
many varied shapes, dimensions, surface
textures and aesthetic designs.
 This material can be designed to withstand
enormous compressive, tensile and flexural
loads.
SHAH RUSHABH . H. ROLL NO. 852 SYCS

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WHAT IS CURING ?
 Curingis a procedure that is adopted to
promote the hardening of concrete
under conditions of humidity and
temperature which are conducive to the
progressive and proper setting of the
constituent cement.
SHAH RUSHABH . H. ROLL NO. 852 SYCS

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METHOS OF CURING
 SITE WORK : COLUMN ,BEAMS :
RETAINING CAST IN SITU
SITE GROUND SLAB ,WALL :
CONSTANT FOG SPRAYING
SITE FLOORSLAB, PAVEMENTS :
PONDING
FACTORY BLOCKS ,PAVIOURS :
STEAM CURING
SHAH RUSHABH . H. ROLL NO. 852 SYCS

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FOR CURING FOLLOWING
REQUIREMENTS ARE TO BE
FULLFILLED
 The preservation of adequate water
content in the concrete , which is
essential for the process of hydration .
 To maintain the temperature above the
freezing point .
 Protection of concrete structure from
damages.
 Maintenance of uniform temperature in
the whole mass.
SHAH RUSHABH . H. ROLL NO. 852 SYCS

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OBJECTIVES OF CURING
 To reduce the shrinkage of the concrete
 To preserve the properties of concrete
, such as impermeability, durability and
strength
 To maintain uniform temperature of the
concrete
 To maintain moisture content in the mix for
complete hydration of concrete
SHAH RUSHABH . H. ROLL NO. 852 SYCS

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MISCELLANEOUS METHODS OF
CONCRETE
STRUCTURAL ELEMENT METHODS OF CURING
TEST BLOCK SUBMERGING IN WATER TANK
BRIDGE SLOB PONDING METHOD
PRE-CAST CONCRETE STEAM CURING
PRODUCTS
COLUMNS SPRINKLING WATER
HUME PIPE STEAM CURING
SHAH RUSHABH . H. ROLL NO. 852 SYCS

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DURATION OF CURING
First of all the concrete should not be
allowed to dry fast in any situation. This
condition should be maintained for 24 hrs.
the concrete cured for the long time will
show superior strength and develop other
good properties. However curing for long
time is a costlier process. The curing varies
for different structures, situationand different
atmospheric temperature .
SHAH RUSHABH . H. ROLL NO. 852 SYCS

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For general guidance it can be said that
concrete should be cured for at least seven
days
This requirement applied to ordinary
portland cement and if rapid hardening
cement is used the period is reduce slightly.
On the other hand, for low heat cement
,the curing should be extended to 21 days .
In cold weather regions , curing should be
continued for long time .
SHAH RUSHABH . H. ROLL NO. 852 SYCS

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CONCLUSION
 It is false economy to neglect the correct
curing program for all concrete items
produced either on site or in factory
processes.
 It is a fairly simple exercise to determine the
correct selection of curing system needed for
a particular application. However, it is a far
easier selection to choose to cure a
concrete structure or not.
CURED CONCRETE QUALITYCONCRETE
SHAH RUSHABH . H. ROLL NO. 852 SYCS

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SHAH RUSHABH . H. ROLL NO. 852 SYCS