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The levelling operation that removes humps and hollows and gives a true and uniform concrete in the finishing of concrete surface is called
- a)floating
- b)curing
- c)screeding
- d)Trowelling
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
The levelling operation that removes humps and hollows and gives a tru...
The finishing of the concrete surface is finally achieved by the following operations:
1. Curing: It is the process of hardening the concrete mixes by keeping its surface moist for a certain period, in order to enable the concrete to gain more strength.
2. Screeding: it is the levelling operation that removes humps and hollows and gives a true and uniform concrete surface.
3. Floating: It is the process of removing the irregularities from the surface of concrete left after screening.
4. Trowelling: It is the final operation of finishing the concrete surface. It is performed where a smooth and dense surface is required.
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The levelling operation that removes humps and hollows and gives a tru...
Screeding in Finishing of Concrete Surface
Screeding is an essential operation in the finishing of concrete surfaces. It involves the removal of humps and hollows to create a level and uniform surface. The process is carried out using a straight edge tool, usually made of wood or aluminum.
Steps in the Screeding Process
The following are the steps involved in the screeding process:
1. Preparation of the Surface: Before screeding, the surface must be prepared by removing any debris, dust or loose materials. The surface must also be moistened to prevent rapid evaporation of water from the concrete.
2. Placing of the Concrete: The concrete is then placed and spread out evenly using shovels or other tools. The concrete is compacted to ensure that there are no air pockets or voids.
3. Screeding: The screeding process begins by using a straight edge tool to level the concrete surface. The tool is moved back and forth in a sawing motion, ensuring that the surface is level and smooth.
4. Checking for Levelness: To ensure that the surface is level, a spirit level is used to check for any deviations. Any areas that are not level are then corrected by adding or removing concrete.
5. Finishing: After screeding, the surface is then finished using a trowel to create a smooth and polished surface.
Importance of Screeding
Screeding is an important operation in the finishing of concrete surfaces for the following reasons:
1. It ensures that the surface is level and uniform, which is essential for structural integrity.
2. It allows for the proper drainage of rainwater and prevents the formation of puddles.
3. It provides a suitable surface for the application of decorative finishes.
Conclusion
In conclusion, screeding is an essential operation in the finishing of concrete surfaces. It involves the removal of humps and hollows to create a level and uniform surface. The process is carried out using a straight edge tool, and it ensures that the surface is level, uniform, and suitable for further finishing.
Screeding is an essential operation in the finishing of concrete surfaces. It involves the removal of humps and hollows to create a level and uniform surface. The process is carried out using a straight edge tool, usually made of wood or aluminum.
Steps in the Screeding Process
The following are the steps involved in the screeding process:
1. Preparation of the Surface: Before screeding, the surface must be prepared by removing any debris, dust or loose materials. The surface must also be moistened to prevent rapid evaporation of water from the concrete.
2. Placing of the Concrete: The concrete is then placed and spread out evenly using shovels or other tools. The concrete is compacted to ensure that there are no air pockets or voids.
3. Screeding: The screeding process begins by using a straight edge tool to level the concrete surface. The tool is moved back and forth in a sawing motion, ensuring that the surface is level and smooth.
4. Checking for Levelness: To ensure that the surface is level, a spirit level is used to check for any deviations. Any areas that are not level are then corrected by adding or removing concrete.
5. Finishing: After screeding, the surface is then finished using a trowel to create a smooth and polished surface.
Importance of Screeding
Screeding is an important operation in the finishing of concrete surfaces for the following reasons:
1. It ensures that the surface is level and uniform, which is essential for structural integrity.
2. It allows for the proper drainage of rainwater and prevents the formation of puddles.
3. It provides a suitable surface for the application of decorative finishes.
Conclusion
In conclusion, screeding is an essential operation in the finishing of concrete surfaces. It involves the removal of humps and hollows to create a level and uniform surface. The process is carried out using a straight edge tool, and it ensures that the surface is level, uniform, and suitable for further finishing.
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The levelling operation that removes humps and hollows and gives a true and uniform concrete in the finishing of concrete surface is calleda)floatingb)curingc)screedingd)TrowellingCorrect answer is option 'C'. Can you explain this answer?
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