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Is concrete harmful?
Wet concrete is caustic- it will burn your skin. Concrete DUST is not good to inhale- it may contain silica. Solid, cured concrete is about as hazardous as a rock.
Does vacuum dewatered concrete requires curing?
Yes, the vacuum dewatered concrete requires curing in order to gain its strength.The concrete is cured for 28 days.
How is pre-stressed concrete made?
Pre-stressed concrete is made by using,high strength steel bars(tendons).normal concrete(>M25)sheaths for cable duct.anchors.jacks.
What is normal concrete?
Normal Concrete refers to the fresh concrete which haven't yet cured providing that there was no add mixtures/any accelerators being infused upon mixing fine aggregates, gravel and cement plus water.
How many days concrete has to be cured prior to steel erection What counts days or strength achieved by concrete?
the strength that it has gained is the main thing, but usually 5 to 7 days as a rough guide.
Is concrete harmful?
Wet concrete is caustic- it will burn your skin. Concrete DUST is not good to inhale- it may contain silica. Solid, cured concrete is about as hazardous as a rock.
What is the difference between shoring and re-shoring?
When referring to concrete work (using a structural suspeneded slab as an example) Shoring - support structure for formwork before concrete is poured and while it is curing. The formwork is the plywood and the shoring is the posts. Reshoirng - support structure for the cured or partially cured concrete - installed after the formwork and shoring have been removed. Usually used as additional support for the partial cured concrete (which has reduced strength) to allow construction work to continue on the slab until it has fully cured.
Does vacuum dewatered concrete requires curing?
Yes, the vacuum dewatered concrete requires curing in order to gain its strength.The concrete is cured for 28 days.
What is green concrete?
Green concrete could mean two different things. It could mean that the concrete isn't cured yet, or it could mean that it is supposed to be environmentally friendly.
How do you make concrete pavers?
Create a form from wood. Place it over plastic sheeting. Pour in concrete. Gently tap out of forms when cured.
How do concrete gaps keep the concrete from cracking during the winter?
During winter when the concrete contracts/shrinks and there is no gap, then it will crack from the surface. So gaps are left in concrete such that it can shrink to a safe limit without cracking it.
Does concrete shrink?
Yes, concrete can shrink as it cures due to water evaporation and the reduction in volume of the cement paste. This shrinkage can lead to cracking if not managed properly through techniques like using proper mix design, curing methods, and expansion joints.
How is pre-stressed concrete made?
Pre-stressed concrete is made by using,high strength steel bars(tendons).normal concrete(>M25)sheaths for cable duct.anchors.jacks.
What is normal concrete?
Normal Concrete refers to the fresh concrete which haven't yet cured providing that there was no add mixtures/any accelerators being infused upon mixing fine aggregates, gravel and cement plus water.
How many days concrete has to be cured prior to steel erection What counts days or strength achieved by concrete?
the strength that it has gained is the main thing, but usually 5 to 7 days as a rough guide.
Is it safe to drive on new concrete after 3 days?
It is generally safe to drive on new concrete after 3 days, but it is recommended to wait at least 7 days to ensure it has fully cured and hardened.
How much does a 4 foot by 4 foot by10 inch concrete panel weigh?
1 cu. yd of cured concrete is about 3600lbs. 1 cu. ft of cured concrete is about 134 lbs. (rounded up) 4 ft x 4 ft x 5/6 ft = 13 1/3 cu. ft 13 1/3 cu. ft = 1787lbs (rounded up)
