[Manish Jain]

CURING METHODS AND MATERIALS

There are two general ways by which concrete can be kept moist and humid or kept at a favourable temperature:

 By maintaining the presence of mixing water in the concrete during the early hardening period. Methods generally deployed are pending or
immersion, spraying, sprinkling or fogging, wet covering using hessian cloth, gunny bags etc.
 By preventing loss of mixing water from the concrete by sealing the exposed surfaces of concrete. The exposed surfaces can be general'
covered by membrane formed by curing compound, impervious paper, plastic sheets or even by leaving formwork in place.

However at times there is a need to accelerate curing or there is necessity to expedite gain to strength due to adverse weather conditions or there is an
intent to handle or put to use the concrete structure earlier. This is achieved by using live steam, heating coils or electrically heated forms or pads.
The curing method or combination of curing methods are generally selected depending on some of the following factors.

• Specifications.
  
• Availability of curing materials.
  
• Economics
  
• Type of concrete structure (precast I cast-in-situ).
  
• Shape and size of concrete surface.
  
• Aesthetic appearance
  

for more details download.... 
 CURING FD.pdf