The chemical reaction between water and cement (known as hydration) causes the cement structure to harden and gain strength. The space occupied by water (water-space) in the concrete mix is either replaced with cement-gel (produced as a result of hydration), or due to evaporation (particularly on the outer portions of the structure).

Hydration stops when the water-spaces are either filled with the cement-gel (good) or when no water is available (bad). If hydration stops due to lack of water, the atmospheric carbon-dioxide reacts with any of the partially-formed cement-gel preventing hydration forever. The un-hydrated cement particles, which would have provided strength on hydration, are useless now.

Refilling the lost water to continue the hydration process is known as Curing.

The curing methods depend on the RCC product and the site where the RCC structure/product is built/manufactured.

RCC pipes are placed in a water tank. Spraying would be ineffectual for controlling water loss from the inner surface, specially when a huge batch of pipes are being cured.
RCC Pipe Curing
A batch of pipes submerged in water for curing.



12/30/2011 06:31:24 am

THX for info

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1/25/2012 01:49:20 pm

Many thanks for info

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1/28/2012 01:44:47 am

Great info, thx

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3/26/2012 02:13:43 pm

Fine post dude

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3/30/2012 11:09:30 am

will return soon

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3/31/2012 04:51:59 pm

nice post

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9/3/2012 02:31:52 pm

is before long

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9/24/2012 01:48:04 am

will come back shortly

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