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https://www.powerblanket.com/blog/long-concrete-take-set/#:~:text=Initial%20Setting%20Times%20for%20Concrete%20In%20standard%20industrial,setting%20time%20is%20generally%2024%20to%2048%20hours.
https://www.quora.com/What-is-the-total-working-time-of-concrete
It is better to compact concrete within initial setting time. Initial setting time of OPC cement is more than half hour and less than 45 minuets. Final setting is 10 hours. I have heard that in some situations concrete used after 3 hours by adding water and remixing has got satisfactory results.
https://www.concreteconstruction.net/_view-object?id=00000153-8b55-dbf3-a177-9f7dbe320000
One Ge n e r al Fo re m a n 2 hours @ $3.94—$ 7.88 One Fo r eman 8 hours @ $3.69—$ 29.52 Fi v e Carpenters 8 hours @ $3.44—$137.60 Two Laborers 8 hours @ $1.95—$ 31.20 One Truck Dri v er 4 hours @ $2.03—$ 8.12 Total for 60 hours $ 2 1 4 . 3 2 $214.32 60 = $3.572 composite manhour rate
https://www.quora.com/What-are-the-average-man-hour-values-for-concrete-form-work-and-rebar-work
labour placing concrete to strip footings - 0.25 hrs / m3. placing only concrete - 0.585 hrs /m3. place concrete to strip footings - 0.9 hrs/m3. place concrete to reinforced slabs on fill, 1.25 hrs/m3. to suspended slabs to 300mm thick - ditto; to attached beams - ditto; walls to 250mm thick - 1.3 hrs/m3; columns - 2 hrs/m3; hollow blocks - 4.8 hrs/ m3
https://www.theprojectestimate.com/concrete-work-productivity-rate/
Concrete Vibrator Concrete Pump & Trans Mixer Crane Truck Power Tools: 34.13: 6.56: Hr / Cubic Meters: 6: Round Columns, Tied, @ 4.2 m high: 600mm Diameter: Incld. forms & rebar: Cubic Meters: 22.75: 4.38: Hr / Cubic Meters: 7: Round Columns, Tied, @ 4.2 m high: 900mm Diameter: Incld. forms & rebar: Cubic Meters: 16.65: 3.20: Hr / Cubic Meters: 8: Max Rebar, Round Columns, Tied, @ 4.2 …
https://www.powerblanket.com/blog/long-concrete-take-set/
But to answer the question of, “How long does concrete take to set?” concrete setting time is generally 24 to 48 hours. At this point the neighborhood dog will not leave his footprints in it, but you should keep it clear of heavy equipment during this time period. Most mixes are cured at 28 days. Factors Affecting Concrete Setting Time
https://www.ziprecruiter.com/c/Skilled-Trades-Services/Job/Concrete-Worker/-in-Washington,IN?jid=b83d2a10cdb657fe
Posted: December 02, 2021. $28 Hourly. Full-Time. We are currently looking for concrete workers for the Washington, IN area. Must be able to start ASAP. Must have at least 5 years of experience. Commerical, Industrial, New Construction and …
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