Curing

• Curing is the process of preventing the loss of moisture from the concrete or mortar.
• Curing should be done for minimum 7 days for 43/53 grade cement.
• Curing should be done for minimum 10 days for blending cement but recommended to continue for 14 days.

SL   Type of       Procedure for

No.   Work            Curing

1.       PCC         - Sprinkling of water.

2.      Footing     Shoul be covered by 

                            wet gunny bags & by 

                            Intermittent                                                Sprinkling of water.

3.     Column      Should be covered by 

                            wet gunny bags & by 

                            Intermittent                                                Sprinkling of water.

4.    Plinth          Shoul be covered by 

       Beams         wet gunny bags & by 

                            Intermittent                                                Sprinkling of water.

5.     Slabs          Wate ponding of min.

                           2" depth & max. Size                                  6'×6' between bunds.  

       Beams        Outer side Should be                                  covered by 

                            wet gunny bags & by 

                           Intermittent                                                Sprinkling of water.

  Beam & Slab  Sprinkling of water                                   from bottom side of                                   slab & beams after                                     de-shuttering.

6.   Brickwork  Intermitten                                                 Sprinkling of water.

7.  Internal  &  Intermittent                            External    Sprinkling of water. 

8.  Water           By Ponding

     Proofing

9.  Tiling            Intermittent                                                Sprinkling of water.

10. External      Intermittent                          painting       Sprinkling of water.

The Curing time or period of concrete is dependent on the following factor.

1. Specified strength of concrete.
2. Grades of concrete.
3. Atmospheric Temperature :-   Due to the chemical reaction between cement & water in concrete release heat which requires water to complete hydration. In summer 50% of water is evaporated. So, more amount of water is required during sunny days.
4. Size and shape of concrete members.