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Tremie is not a "mix" but rather is a method of placing concrete underwater. It would seem to me, and I work in construction, that you would be needlessly adding cost. Why not simply use "normal" concrete for "normal" structures? Here is a link: http://www.concreteconstruction.net/industry-news.asp?sectionID=718&articleID=243445
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∙ 14y ago
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Which is costly steel structures or concrete structures?
Concrete structures are more costly than steel structures. Both types of material are the dominant materials that are used in building homes and offices.
What is the meaning of cement concrete of grade-m150?
the M150 grade concrete is today's hardest concrete and it has a optimal water composition of 0.18 to 0.28 percent . there is no composition for this concrete it is derived through experiments . used in very heavy structures . it has not used in india .
What is high strength concrete?
Concrete with compressive strength more than 55 MPa is known as high strength concrete.It is used in the construction of bridges, dams. etc.,High strength concrete is produced by adding normal constituents of concrete with admixtures.
When is concrete used without metal reinforcement bars?
Concrete are used without reinforcement bars on concrete roads.
Why a brick pieces used in roof?
the construction of wallscolumn constructionpavements.
Methods of underwater concreting?
This is a method on how to place concrete underwater, this method place a big role in offshore concreting, since cement looses its strength and fade away under water, Tremie method is to be used. Tremie Concrete is done by using a formwork/pipe which will have one end of the formwork/pipe above water and other bottom end immersed under the water and with the help of gravity.A tremie is a watertight pipe, generally 250mm in diameter, having a funnel shape hopper at its upper end and a loose plug at the bottom or discharge end. The valve at the discharge end is used to de-water the tremie and control the distribution of the concrete. The tremie is supported on a working platform above water level, and to facilitate the placing it is built up in 1 to 3.5m section.During the concreting, air and water must be exclude from the tremie by keeping the pipe full of concrete all the time; and for this reason the capacity of the hopper should be at least equal to that of the tremie pipe. In charging the tremie a plug formed of paper is first inserted into the pipe as the hopper is filled the pressure of fresh concrete forces the plug down the pipe, and the water in the tremie I displaced by concrete.For concreting, the tremie pipe is lowered into position and the discharge end is kept as deeply submerged beneath the surface of freshly placed concrete as the placed concrete as the head of concrete in tremie permits. As concreting proceeds the pipe is raised slightly and the concrete flows outwards. Care should be taken to maintain continuity of concreting without breaking the seal provided by the concrete cover over the discharge end. Should this seal is broken, the tremie should be lift and plugged before concreting is recommended. The tremie should never be moved laterally though freshly placed concrete. It should be lifted vertically above the surface of concrete and shifted to its new position.When large quantities of concrete are to be placed continuously, it is preferable to place concrete simultaneously and uniformly through a battery of tremies, rather than shift a single tremies from point to point. It has been recommended that the spacing of tremies be between 3.5 and 5m and that the end tremies should be about 2.5m from the formwork. The risk of segregation and non-uniform stiffening can be minimized by maintaining the surface of concrete in the forms as level as possible and by providing a continuous and rapid flow of concrete.How is the Underwater Concrete Mixes?For Structural concrete following must be consideredCoarse Aggregate: Gravel of 3/4" (20mm) max. size. Use 50-55 % of the total aggregate by weight.Sand, 45-50% of the total aggregate by weight.Cement: Type II ASTM (moderate heat of hydration), 600 lbs/yd3Pozzolans: ASTM 616 Type N or F, 100 lbs/ yd3Water/Cement Ratio: 0.42 (0.45 Maximum).ƒWater-Reducing Admixture (preferably it is also plasticizer): Do not use superplasticizers.ƒAir-Entrainment Admixtures: To give 6% total air.ƒRetarding Admixture: To increase setting time to 4-24 hours, as required.ƒSlump: 6 1/2" ± 1"ƒThis mix will develop compressive strength in the range of 5,600 - 7,000 psi at 28 days.
Which is costly steel structures or concrete structures?
Concrete structures are more costly than steel structures. Both types of material are the dominant materials that are used in building homes and offices.
Why do builders put metal rods in concrete?
Rebar is used as a tensioning device in reinforced concrete and reinforced masonry structures holding the concrete in compression.
What is a concrete anchor bolt used for?
An anchor bolt is used to attach things or structures to concrete. Anchor bolts are used on all types of projects. They are used on dams and nuclear power plants.
What is the meaning of cement concrete of grade-m150?
the M150 grade concrete is today's hardest concrete and it has a optimal water composition of 0.18 to 0.28 percent . there is no composition for this concrete it is derived through experiments . used in very heavy structures . it has not used in india .
what is bending machine?
Apparatus used to bend and shape steel rod,especially used in the preparation of steel re-inforced concrete structures,eg concrete slabs and pillars.
In ancient Rome did they use concrete or cement for baking bricks?
i don't know what baking bricks are but ancient Rome used concrete in many structures
How many concrete structures were there in ancient Rome?
There is not a precise count. The Romans used concrete extensively. They used it for large buildings, bridges, and aqueducts though stone and brick were used as well in a concrete construction. As Roman concrete also set underwater, it was also used to build ports.The biggest building which was made mainly in concrete is the Colosseum.
What is the difference between lean concrete and mass concrete?
Mass concrete is concrete cast without Rebars. They are good in compression and are mostly used for the construction of gravity structures such as Dams. While reinforced concrete have reinforcement bars in them, which increases the tensile strenght of the concrete.
What are the differences between the mass concrete and reinforced concrete?
Mass concrete is concrete cast without Rebars. They are good in compression and are mostly used for the construction of gravity structures such as Dams. While reinforced concrete have reinforcement bars in them, which increases the tensile strenght of the concrete.
What is Bar Bending Machine?
Apparatus used to bend and shape steel rod,especially used in the preparation of steel re-inforced concrete structures,eg concrete slabs and pillars.
What is the difference between laen concrete and ready mix concrete?
Laen concrete contains very little actual cement. Laen cement is used as a base that is found under other cements. Ready mix concrete is used for primary uses of cement structures.
