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Contribution of early thermal gradient within initial set period and curing methods on O.C. concrete compressive strength with the aid of maturity concept | ||
| Kirkuk Journal of Science | ||
| Article 1, Volume 12, Issue 3, 2017, Pages 690-712 PDF (0 K) | ||
| DOI: 10.32894/kujss.2017.131533 | ||
| Author | ||
| Nayyef Dwerij Hameed | ||
| Abstract | ||
| The present research aims at the effect of early thermal gradient( initial setting) on o.c. concrete compressive strength with the aid of maturity concept:- Standard cylindrical ∅ 150 * 300 mm concrete sealed specimens (( content by weight 400 kg/m3 cement) were subjected to a temperature of 4˚C for the duration of initial setting times ( 2 hrs. ) then later (removing sealed) on to standard temperature of 20 ˚C until 360 days at moisture and air curred conditions to be finally tested in compression at the prementioned dates . The same procedure was exactly repeated but the concrete specimens were subjected to 50˚C at the initial setting times . The final outcome showed that generally speaking the strength development was slower for the specimens subjected to 4˚C than those at 50˚C at the initial setting times but,beyond the age of 7 days approximately until 360 days the compressive strength gains more in strength for the specimens subjected to 4˚C than those at 50˚C as compared with same mixture subjected to 20˚C . | ||
| Keywords | ||
| early thermal gradient; maturity; initial setting; Concrete; strength | ||
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