á¨á¨áł
á á˛áľ ááá áĽá 22 áá 2018
á. á ááľá áá á¨á°áá°á°
https://t.me/ETCONpWORK
@etconp
á á˛áľ ááá áĽá 22 áá 2018
á. á ááľá áá á¨á°áá°á°
https://t.me/ETCONpWORK
@etconp
đ2
á¨á¨áł
áŞááá°á áĽá 20 áá 2018
á. á ááľá áá á¨á°áá°á°
https://t.me/ETCONpWORK
@etconp
áŞááá°á áĽá 20 áá 2018
á. á ááľá áá á¨á°áá°á°
https://t.me/ETCONpWORK
@etconp
đ2
á¨á¨áł
áŞááá°á áĽá 20 áá 2018
á. á ááľá áá á¨á°áá°á°
https://t.me/ETCONpWORK
@etconp
áŞááá°á áĽá 20 áá 2018
á. á ááľá áá á¨á°áá°á°
https://t.me/ETCONpWORK
@etconp
â¤2
á¨á¨áł
á á˛áľ ááá áĽá 19 áá 2018
á. á ááľá áá á¨á°áá°á°
https://t.me/ETCONpWORK
@etconp
á á˛áľ ááá áĽá 19 áá 2018
á. á ááľá áá á¨á°áá°á°
https://t.me/ETCONpWORK
@etconp
đ1
á¨á¨áł
á á˛áľ ááá áĽá 19 áá 2018
á. á ááľá áá á¨á°áá°á°
https://t.me/ETCONpWORK
@etconp
á á˛áľ ááá áĽá 19 áá 2018
á. á ááľá áá á¨á°áá°á°
https://t.me/ETCONpWORK
@etconp
â¤1đ1
á¨á¨áł
á á˛áľ ááá áĽá 20 áá 2018
á. á ááľá áá á¨á°áá°á°
https://t.me/ETCONpWORK
@etconp
á á˛áľ ááá áĽá 20 áá 2018
á. á ááľá áá á¨á°áá°á°
https://t.me/ETCONpWORK
@etconp
â¤3đ1
á¨á¨áł
á á˛áľ ááá áĽá 20 áá 2018
á. á ááľá áá á¨á°áá°á°
https://t.me/ETCONpWORK
@etconp
á á˛áľ ááá áĽá 20 áá 2018
á. á ááľá áá á¨á°áá°á°
https://t.me/ETCONpWORK
@etconp
â¤1
á¨á¨áł
á á˛áľ ááá áĽá 20 áá 2018
á. á ááľá áá á¨á°áá°á°
https://t.me/ETCONpWORK
@etconp
á á˛áľ ááá áĽá 20 áá 2018
á. á ááľá áá á¨á°áá°á°
https://t.me/ETCONpWORK
@etconp
đĽ1
á¨á¨áł
á á˛áľ ááá áĽá 20 áá 2018
á. á ááľá áá á¨á°áá°á°
https://t.me/ETCONpWORK
@etconp
á á˛áľ ááá áĽá 20 áá 2018
á. á ááľá áá á¨á°áá°á°
https://t.me/ETCONpWORK
@etconp
đ1
á¨á¨áł
á á˛áľ ááá áĽá 16 áá 2018
á. á ááľá áá á¨á°áá°á°
https://t.me/ETCONpWORK
@etconp
á á˛áľ ááá áĽá 16 áá 2018
á. á ááľá áá á¨á°áá°á°
https://t.me/ETCONpWORK
@etconp
â¤1đ1
á¨á¨áł
á á˛áľ ááá áĽá 16 áá 2018
á. á ááľá áá á¨á°áá°á°
https://t.me/ETCONpWORK
@etconp
á á˛áľ ááá áĽá 16 áá 2018
á. á ááľá áá á¨á°áá°á°
https://t.me/ETCONpWORK
@etconp
â¤1
á¨á¨áł
á á˛áľ ááá áĽá 16 áá 2018
á. á ááľá áá á¨á°áá°á°
https://t.me/ETCONpWORK
@etconp
á á˛áľ ááá áĽá 16 áá 2018
á. á ááľá áá á¨á°áá°á°
https://t.me/ETCONpWORK
@etconp
đ2â¤1
á¨á¨áł
á á˛áľ ááá áĽá 18 áá 2018
á. á ááľá áá á¨á°áá°á°
https://t.me/ETCONpWORK
@etconp
á á˛áľ ááá áĽá 18 áá 2018
á. á ááľá áá á¨á°áá°á°
https://t.me/ETCONpWORK
@etconp
â¤2đ1
á¨á¨áł
á á˛áľ ááá áĽá 18 áá 2018
á. á ááľá áá á¨á°áá°á°
https://t.me/ETCONpWORK
@etconp
á á˛áľ ááá áĽá 18 áá 2018
á. á ááľá áá á¨á°áá°á°
https://t.me/ETCONpWORK
@etconp
â¤3đ1
đConcrete Curing (Methods, Importance & Site Practice â Practical & Technical) questions
1. What is concrete curing?
Concrete curing is the process of maintaining adequate moisture, temperature, and time to allow proper hydration of cement and strength development.
2. Why is curing important in concrete works?
Curing improves strength, durability, impermeability, and reduces cracking and surface defects.
3. When should concrete curing start?
Curing should start immediately after the concrete has set sufficiently to prevent surface damage.
4. What happens if concrete is not properly cured?
Poor curing leads to low strength, surface cracking, dusting, shrinkage, and reduced durability.
5. What are the main objectives of concrete curing?
To prevent moisture loss, control temperature, and ensure complete cement hydration.
6. What are the common methods of concrete curing?
Water curing, membrane curing, steam curing, and curing compounds.
7. What is water curing?
A curing method where water is applied continuously to keep the concrete surface moist.
8. What are examples of water curing methods?
Ponding, sprinkling, wet hessian covering, and continuous water spray.
9. Where is ponding commonly used?
On flat surfaces such as slabs, pavements, and bridge decks.
10. What is membrane curing?
A method that involves covering the concrete surface with impermeable materials to prevent moisture loss.
11. What materials are used for membrane curing?
Polythene sheets, bituminous membranes, and curing compounds.
12. What is curing compound?
A liquid chemical applied to the concrete surface to form a moisture-retaining film.
13. Where are curing compounds commonly used?
Road works, large concrete surfaces, and areas where water curing is difficult.
14. What is steam curing?
A curing method using steam to accelerate strength gain, mainly for precast concrete elements.
15. Where is steam curing applied?
Precast yards, concrete blocks, pipes, and factory-produced elements.
16. How long should concrete curing last?
Generally 7 days for ordinary Portland cement and at least 14 days for blended cements, depending on specifications.
17. How does temperature affect curing?
High temperatures increase evaporation and risk of cracking, while low temperatures slow down strength development.
18. What precautions should be taken during hot weather curing?
Increase curing frequency, protect surfaces from direct sunlight, and use windbreaks where necessary.
19. Who is responsible for ensuring proper concrete curing on site?
The site engineer, quality control engineer, and site supervisors.
20. How does proper curing affect concrete durability?
It improves resistance to abrasion, weathering, chemical attack, and extends the service life of the structure.
@etconp
1. What is concrete curing?
Concrete curing is the process of maintaining adequate moisture, temperature, and time to allow proper hydration of cement and strength development.
2. Why is curing important in concrete works?
Curing improves strength, durability, impermeability, and reduces cracking and surface defects.
3. When should concrete curing start?
Curing should start immediately after the concrete has set sufficiently to prevent surface damage.
4. What happens if concrete is not properly cured?
Poor curing leads to low strength, surface cracking, dusting, shrinkage, and reduced durability.
5. What are the main objectives of concrete curing?
To prevent moisture loss, control temperature, and ensure complete cement hydration.
6. What are the common methods of concrete curing?
Water curing, membrane curing, steam curing, and curing compounds.
7. What is water curing?
A curing method where water is applied continuously to keep the concrete surface moist.
8. What are examples of water curing methods?
Ponding, sprinkling, wet hessian covering, and continuous water spray.
9. Where is ponding commonly used?
On flat surfaces such as slabs, pavements, and bridge decks.
10. What is membrane curing?
A method that involves covering the concrete surface with impermeable materials to prevent moisture loss.
11. What materials are used for membrane curing?
Polythene sheets, bituminous membranes, and curing compounds.
12. What is curing compound?
A liquid chemical applied to the concrete surface to form a moisture-retaining film.
13. Where are curing compounds commonly used?
Road works, large concrete surfaces, and areas where water curing is difficult.
14. What is steam curing?
A curing method using steam to accelerate strength gain, mainly for precast concrete elements.
15. Where is steam curing applied?
Precast yards, concrete blocks, pipes, and factory-produced elements.
16. How long should concrete curing last?
Generally 7 days for ordinary Portland cement and at least 14 days for blended cements, depending on specifications.
17. How does temperature affect curing?
High temperatures increase evaporation and risk of cracking, while low temperatures slow down strength development.
18. What precautions should be taken during hot weather curing?
Increase curing frequency, protect surfaces from direct sunlight, and use windbreaks where necessary.
19. Who is responsible for ensuring proper concrete curing on site?
The site engineer, quality control engineer, and site supervisors.
20. How does proper curing affect concrete durability?
It improves resistance to abrasion, weathering, chemical attack, and extends the service life of the structure.
@etconp
â¤14đ1
đá ááŹá áĽááľ á¨á¸á á áŞáááľ á áá á°áááá
đŤáŞáááą á¨áá áł ááľáááľ ááá ááŽáááľ á˛áá á 385 áááłá ááŹáľ áá áŤá¨á ááᤠá á ááľ áá áĽáľá¨ 400 áĽáááśá˝á ááľá°áááľ á¨áá˝á áŚáľáľ ááἠá¤áśá˝áŁ áአá¨áŁáá ááá¨áᣠáááá á¨ááĽá¨-á áááľá á¨áľáĽá°áŁ á áłáŤážá˝ á ááľá¤
đ§áĽáá˛ááጠá¨ááááľ ááŤááť áľááŤáá˝á 15.4 áŞá ááľá á¨áá¨áá á¨áĽáá¨á ááááśá˝á á¨áŤáá á¨á¸á á áŞáááľá¤ áá á áŤá áľáľáľáá ááá áá¨á áłáłá˘ á°á°áá á¨á°ááᣠááá¤
đŤ10,000 á¨ááŤáᏠá°ááá˝ áŤá¨áá áľ á¨ááŤáᏠááá ááᎠáĽáľá¨ ááá á¨ááá ááá áľá¨áľá¤ áĽáŤááłááą á¨áŞáááą áá˝áł á¨á˘áľáŽáľáŤá á°ááĽáŻáá áŁá áá ááĽáľ á¨ááŤáááŁáá áááŁ
âşá 51 á¨á°á ááá á¨áááł áááá˝á á ááá á áá á°á¨á á ááá á¨áąáŞáá á áááááśá˝ áĽáá á¨ááá á¸á á áŞáááľá¤ á˘áľáŽáľáŤá á á ááŞáŤ ááłá á¨áąáŞáľáľ ááłá¨áť áááľá¨á á áá°á¨áá áá ááľáĽ áľáá áłáŞáŤá áĽáĽááľ ááá¤
@etconp
đŤáŞáááą á¨áá áł ááľáááľ ááá ááŽáááľ á˛áá á 385 áááłá ááŹáľ áá áŤá¨á ááᤠá á ááľ áá áĽáľá¨ 400 áĽáááśá˝á ááľá°áááľ á¨áá˝á áŚáľáľ ááἠá¤áśá˝áŁ áአá¨áŁáá ááá¨áᣠáááá á¨ááĽá¨-á áááľá á¨áľáĽá°áŁ á áłáŤážá˝ á ááľá¤
đ§áĽáá˛ááጠá¨ááááľ ááŤááť áľááŤáá˝á 15.4 áŞá ááľá á¨áá¨áá á¨áĽáá¨á ááááśá˝á á¨áŤáá á¨á¸á á áŞáááľá¤ áá á áŤá áľáľáľáá ááá áá¨á áłáłá˘ á°á°áá á¨á°ááᣠááá¤
đŤ10,000 á¨ááŤáᏠá°ááá˝ áŤá¨áá áľ á¨ááŤáᏠááá ááᎠáĽáľá¨ ááá á¨ááá ááá áľá¨áľá¤ áĽáŤááłááą á¨áŞáááą áá˝áł á¨á˘áľáŽáľáŤá á°ááĽáŻáá áŁá áá ááĽáľ á¨ááŤáááŁáá áááŁ
âşá 51 á¨á°á ááá á¨áááł áááá˝á á ááá á áá á°á¨á á ááá á¨áąáŞáá á áááááśá˝ áĽáá á¨ááá á¸á á áŞáááľá¤ á˘áľáŽáľáŤá á á ááŞáŤ ááłá á¨áąáŞáľáľ ááłá¨áť áááľá¨á á áá°á¨áá áá ááľáĽ áľáá áłáŞáŤá áĽáĽááľ ááá¤
áá ááŽáááľ á ááá áá° áĽáááľ á¨ááááĽá¤ á¨á˘áľáŽáľáŤá á¨á°ááĽáŽá á¨áŁá á á¸ááá˝ ááá ááá á¨ááŤááá á ááľ á¨ááľá¨á á¨áá°áá ááááľ á á°ááŁá á¨áłá¨á áľ áłáá áľáŤ áááĄáĄ
Via PMO Ethiopia
@etconp
â¤13