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they poured the concrete into boxes with cooling tubes running through them. curing concrete produces heat and the vast size of the dam produces insulation so the concrete in the centre would still be curing for another 50 years yet
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∙ 14y ago
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How much concrete was used to build Hoover Dam?
about 6600000 tons of concrete!! natal
Is Prestressed concrete the same as regular concrete?
Yes the raw materials used are the same but design as per market requirement..!! Prestressed concrete is used for bridges and damms where concrete pouring is not possible
What are the gaps in the concrete road made of and why is that material used?
There are several ways that the thermal expansion joints in a concrete road surface can be made:cut by a concrete saw after the concrete sets, there is no material in the jointfilled with a compressible fiberboard spacer before pouring the concrete, this spacer is left behind in the joint and easily compresses when the concrete expands and expands when the concrete contractsfilled with interleaved steel teeth before pouring the concrete, these teeth slide past each other as the concrete expands and contracts they provide a smoother road surface and are commonly used on bridgesetc.
What can you build with 14 million tons of concrete?
Hoover dam used 6,600,000 tons of concrete so you could build 2 Hoover dams and have some left over to be exact 800,000 tons left over.
What is box out in formwork?
It is used to "block" the opening in walls and slabs during concrete pouring. This is usually made of wood or styrofoam.
Why were the builders able to build the Hoover Dam and get the concrete to dry?
Concrete does dry as it solidifies, but the water used in the mix does not evaporate and leave the remaining components of the concrete in place as a solid. When concrete sets the water chemically reacts with the solids and is incorporated into the now solid material. The main problem with the setting of the concrete in Hoover Dam was to remove the heat generate in the setting process. The concrete was poured in such thick blocks that the internal temperature would have risen to damaging levels without special procedures to remove this heat. Coolant was circulated through pipes laid in the concrete to remove this heat.
Amount of cement used in the Hoover Dam?
5,000,000 barrels of cement were used to make the 4,300,000 cubic yards of concrete required.
What is the effect of hydration on strength of a concrete?
Excess water (over hydration) causes weak concrete. The water in concrete is there to start a chemical process which results in the hardening process. The excess water is not used in the chemical process and results in a weakened concrete.
What is a mud rake?
A mud rake is a type of rake that is used to create a flat surface when pouring concrete. A mud rake looks like a rake with a long handle and a flat surface for pulling concrete.
The difference between setting and hardening in cement?
SettingSetting begins to occur after the concrete is mixed and even before pouring. The cement in the concrete begins to stiffen after mixed with water. The concrete is beginning to change from liquid form to solid form. During the setting process, the concrete does gain strength, which is the beginning of the hardening process. When the water ingredient is added to the concrete mix, the concrete is still pliable and flexible, sort of a paste. There is two stages of setting: initial and final setting. Initial setting is when the concrete loses it flexibility and begins to harden. Final setting is when the concrete can sustain some load, but still has some moisture within the mixture.HardeningHardening of the concrete is the stage when the mixture gains strength. The cement ingredient begins to attach itself to the aggregate as the water dries off the mixture. The hydration of water is what starts the hardening process. It generally takes five to seven days for the concrete to complete the hardening process. The easiest way to increase the strength of concrete is to add cement to the mixture. The more water used in the mixture, the weaker the concrete and it will also delay the hardening process. Once the concrete has hydrated all the water from the mixture, the hardening process is complete and the concrete is as strong as it will get.
How much cement was used to make the Hoover Dam?
Three and one-quarter million cubic yards. There are 4,360,000 cubic yards of concrete in the dam
What is an hoover used for?
a hoover is used for cleaning you house
