19. 20. 21. 22. 23. 24. 25. For ensuring quality of concrete, use Graded aggregates Single sized aggregates Two sized aggregate Coarse aggregates. a. b. C. d. Pick up the correct statement from the following: a. b. C. d. e. To minimize the occurrence of plastic shrinkage cracking, it is important to: a. Protect the concrete with concrete cover, such as polyethylene sheeting, during any delay between placing and finishing. b. C. d. a. b. C. d. e. Pick up the correct statement from the following: a. b. C. d. e. Construction joints in columns are provided a few cm below the junction of beam Construction joints in beams and slabs are provided within middle third Construction joints in beams and slabs are provided within middle third Construction joints are generally provided in positions subjected to least shear All the above. a. b. The entrained air in concrete Decreases workability C. d. e. Protect the concrete with temporary coverings, such as polyethylene sheeting, during any delay between mixing and transporting. Protect the concrete with temporary coverings, such as polyethylene sheeting, during any delay between placing and finishing. Protect the concrete with temporary coverings, such as polyethylene sheeting, during any delay between transporting and placing. a. b. C. d. The concrete gains strength due to hydration of cement Separation of water from a freshly concrete, is known as: Creeping Segregation Flooding. Bleeding None of these. The concrete cured at a temperature below 23C, gains strength up to 28 days The concrete does not set at freezing point The strength of concrete increases with its age All the above. Decreases resistance to weathering Increases strength Increases workability Affects neither workability nor strength. Hot weather conditions can create difficulties in fresh concrete, such as: Decreased water demand. Decreased rate of setting resulting in placing and finishing difficulties. Accelerated slump loss leading to the addition of water on the jobsite. a, c. 19. 20. 21. 22. 23. 24. 25. For ensuring quality of concrete, use Graded aggregates Single sized aggregates Two sized aggregate Coarse aggregates. a. b. C. d. Pick up the correct statement from the following: a. b. C. d. e. To minimize the occurrence of plastic shrinkage cracking, it is important to: a. Protect the concrete with concrete cover, such as polyethylene sheeting, during any delay between placing and finishing. b. C. d. a. b. C. d. e. Pick up the correct statement from the following: a. b. C. d. e. Construction joints in columns are provided a few cm below the junction of beam Construction joints in beams and slabs are provided within middle third Construction joints in beams and slabs are provided within middle third Construction joints are generally provided in positions subjected to least shear All the above. a. b. The entrained air in concrete Decreases workability C. d. e. Protect the concrete with temporary coverings, such as polyethylene sheeting, during any delay between mixing and transporting. Protect the concrete with temporary coverings, such as polyethylene sheeting, during any delay between placing and finishing. Protect the concrete with temporary coverings, such as polyethylene sheeting, during any delay between transporting and placing. a. b. C. d. The concrete gains strength due to hydration of cement Separation of water from a freshly concrete, is known as: Creeping Segregation Flooding. Bleeding None of these. The concrete cured at a temperature below 23C, gains strength up to 28 days The concrete does not set at freezing point The strength of concrete increases with its age All the above. Decreases resistance to weathering Increases strength Increases workability Affects neither workability nor strength. Hot weather conditions can create difficulties in fresh concrete, such as: Decreased water demand. Decreased rate of setting resulting in placing and finishing difficulties. Accelerated slump loss leading to the addition of water on the jobsite. a, c. 19. 20. 21. 22. 23. 24. 25. For ensuring quality of concrete, use Graded aggregates Single sized aggregates Two sized aggregate Coarse aggregates. a. b. C. d. Pick up the correct statement from the following: a. b. C. d. e. To minimize the occurrence of plastic shrinkage cracking, it is important to: a. Protect the concrete with concrete cover, such as polyethylene sheeting, during any delay between placing and finishing. b. C. d. a. b. C. d. e. Pick up the correct statement from the following: a. b. C. d. e. Construction joints in columns are provided a few cm below the junction of beam Construction joints in beams and slabs are provided within middle third Construction joints in beams and slabs are provided within middle third Construction joints are generally provided in positions subjected to least shear All the above. a. b. The entrained air in concrete Decreases workability C. d. e. Protect the concrete with temporary coverings, such as polyethylene sheeting, during any delay between mixing and transporting. Protect the concrete with temporary coverings, such as polyethylene sheeting, during any delay between placing and finishing. Protect the concrete with temporary coverings, such as polyethylene sheeting, during any delay between transporting and placing. a. b. C. d. The concrete gains strength due to hydration of cement Separation of water from a freshly concrete, is known as: Creeping Segregation Flooding. Bleeding None of these. The concrete cured at a temperature below 23C, gains strength up to 28 days The concrete does not set at freezing point The strength of concrete increases with its age All the above. Decreases resistance to weathering Increases strength Increases workability Affects neither workability nor strength. Hot weather conditions can create difficulties in fresh concrete, such as: Decreased water demand. Decreased rate of setting resulting in placing and finishing difficulties. Accelerated slump loss leading to the addition of water on the jobsite. a, c. 19. 20. 21. 22. 23. 24. 25. For ensuring quality of concrete, use Graded aggregates Single sized aggregates Two sized aggregate Coarse aggregates. a. b. C. d. Pick up the correct statement from the following: a. b. C. d. e. To minimize the occurrence of plastic shrinkage cracking, it is important to: a. Protect the concrete with concrete cover, such as polyethylene sheeting, during any delay between placing and finishing. b. C. d. a. b. C. d. e. Pick up the correct statement from the following: a. b. C. d. e. Construction joints in columns are provided a few cm below the junction of beam Construction joints in beams and slabs are provided within middle third Construction joints in beams and slabs are provided within middle third Construction joints are generally provided in positions subjected to least shear All the above. a. b. The entrained air in concrete Decreases workability C. d. e. Protect the concrete with temporary coverings, such as polyethylene sheeting, during any delay between mixing and transporting. Protect the concrete with temporary coverings, such as polyethylene sheeting, during any delay between placing and finishing. Protect the concrete with temporary coverings, such as polyethylene sheeting, during any delay between transporting and placing. a. b. C. d. The concrete gains strength due to hydration of cement Separation of water from a freshly concrete, is known as: Creeping Segregation Flooding. Bleeding None of these. The concrete cured at a temperature below 23C, gains strength up to 28 days The concrete does not set at freezing point The strength of concrete increases with its age All the above. Decreases resistance to weathering Increases strength Increases workability Affects neither workability nor strength. Hot weather conditions can create difficulties in fresh concrete, such as: Decreased water demand. Decreased rate of setting resulting in placing and finishing difficulties. Accelerated slump loss leading to the addition of water on the jobsite. a, c.