| Sat Mar 15, 2014 | Post #1 | Navneet Jharia
Join date: Dec 2010 |  Post subject: CURING ON ROOF Slab
Dear Mr. K Umapathi, It was left for 3 to 4 hrs. without curing ,don't worry sir , its all okay..The presence of water is essential to cause the chemical action which accompanies the setting of concrete.Normally, there is an adequate quantity of water at the time of mixing to cause hardening of concrete,but it is necessary to retain water until the concrete has fully hardened. As you are using 'Ponding', is a very effective method..the depth of water should be 50 mm to prevent evaporation...Regards. | | |
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| Sun Mar 16, 2014 | Post #2 | K Umapathi
Join date: Jun 2013 | Post subject: CURING ON ROOF Slab
Dear Navneet Jharia sir,
Thank you very much for your prompt reply. Your positive answer given me a sigh of relief. Thanks again sir.
With Regards,
K Umapathi.
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| Mon Mar 17, 2014 | Post #3 | Ahmed
Join date: Aug 2013 | Hi sir How many days we have to do the curing and ponding for the good strength | | |
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| Mon Mar 17, 2014 | Post #4 | Navneet Jharia
Join date: Dec 2010 | Post subject: CURING ON ROOF Slab
Hello..! Ahmed...The curing period for Reinforced Cement Concrete (RCC) slab is 21 days to attain its strength according to Mix of Concrete..Regards
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| Tue Mar 18, 2014 | Post #5 | Ahmed
Join date: Aug 2013 | Tks navneet sir, but when can we remove shutters and sheets used for concrete slab. Even it has to be for 21 days | | |
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| Tue Mar 18, 2014 | Post #6 | S L Gupta (Civil Engg)
Join date: Mar 2008 | Dear Ahmed Recommended Period for Removal of Shuttering
- 48 hours for sides of foundations, columns, beams and walls.
- 7 days for underside of slab up to 4.5 meter span
- 14 days for underside of slab, beams, arches above 4.5 meter up to 6 meter span.
- 21 days for underside of beams arches above 6 meter span and up to 9 meter span.
- 28 days for underside of beams arches above 9 meter span. For more detail see the construction section of gharexpert in which in concrete sub section you wil find the detail of concrete and shuttering.
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| Wed Mar 19, 2014 | Post #7 | Ahmed
Join date: Aug 2013 | Tks for Mr. Gupta | | |
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