40.Vibration can increase the bulk density of Portland Cement.T or F41.Air entrainers produce tiny bubbles in the cement paste whichcrush upon freezing and decrease the strength of concrete.T or F42.Aggregates with low strength has no impact on the ultimate strengthof cement or asphalt.T or F43.The design of concrete is the responsibility of civil engineers.T or F44.Waste water from ready-mixed plants is a hazardous substance andcannot be reused for mixing new concrete.T or FPortland Cement is named after the bauxite & chalk cliffs on the Isleof Port Antonio, where it was first made in the early 1800s.45.T or FT or FAir entrainers produces tiny bubbles in the concrete and reduces,the stress in concrete in freezing climates.46.T or FAir entrainers improves workability and increases strength by about20%; however, it can be compensated by increasing the wc ratio.47.T or FProperties of aggregates include shape and texture, soundness,toughness, absorption, specific gravity, strength and modulus,gradation, deleterious materials and eleanness, alkaline reactivity, andaffinity for asphalt.48.DFocus

Answered: 40. Vibration can increase the bulk…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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40.
Vibration can increase the bulk density of Portland Cement.
T or F
41.
Air entrainers produce tiny bubbles in the cement paste which
crush upon freezing and decrease the strength of concrete.
T or F
42.
Aggregates with low strength has no impact on the ultimate strength
of cement or asphalt.
T or F
43.
The design of concrete is the responsibility of civil engineers.
T or F
44.
Waste water from ready-mixed plants is a hazardous substance and
cannot be reused for mixing new concrete.
T or F
Portland Cement is named after the bauxite & chalk cliffs on the Isle
of Port Antonio, where it was first made in the early 1800s.
45.
T or F
T or F
Air entrainers produces tiny bubbles in the concrete and reduces,
the stress in concrete in freezing climates.
46.
T or F
Air entrainers improves workability and increases strength by about
20%; however, it can be compensated by increasing the wc ratio.
47.
T or F
Properties of aggregates include shape and texture, soundness,
toughness, absorption, specific gravity, strength and modulus,
gradation, deleterious materials and eleanness, alkaline reactivity, and
affinity for asphalt.
48.
DFocus

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Given data:-

Portland cement:-

Portland cement produced in Britain starting in the middle of the 18th century formed the foundation for Portland cement.
Because of its resemblance to Portland stone, a type of construction stone found on an island in Dorchester, England, it was given that name.
It is also referred to as common or all-purpose cement.
Use Portland Cement in concrete for masonry units and other precast products, as well as for bridges, walls, culverts, floors, pavements, sidewalks, tubes, reinforced concrete buildings, tanks, and reservoirs.

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