Quiz
Chapter 7
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Questions in this quiz (11)
1[blank_start]Batching[blank_end] is measuring and introducing concrete ingredients into the mixer.
- ABatching
2There are three mixing methods - central mixed concrete, shrink mixed concrete, and truck mixed concrete.
- ATrue
- BFalse
3[blank_start]Central[blank_end] Mixed Concrete - mixed at the plant, delivered in a mixing truck
[blank_start]Shrink[blank_end] Mixed Concrete - partially mixed at the plant, then discharged into truck drum for complete mixing- ACentral
- BShrink
- CCentral
- DShrink
4When mixing the concrete, it is important to not add too much water. It may increase workability, but it will hinder the concrete mix.
- ATrue
- BFalse
5Over-vibrating concrete can segregate mortar from aggregate.
- ATrue
- BFalse
6Important considerations of hardened concrete are shrinkage, creep, permeability, and the stress-strain relationship.
- ATrue
- BFalse
7Shrinkage is caused by [blank_start]improper[blank_end] curing, a [blank_start]low[blank_end] coarse aggregate content, a [blank_start]high[blank_end] water to cement ratio, aging, and a [blank_start]high[blank_end] cement content.
- Aimproper
- Bproper
- Clow
- Dhigh
- Elow
- Fhigh
- Glow
- Hhigh
8Creep is the gradual decrease in strain in walls, columns, beams with time due to sustained load.
- ATrue
- BFalse
9Aged concrete buildings become [blank_start]sensitive[blank_end] infrastructure.
- Asensitive
10[blank_start]Permeable[blank_end] concrete leads to a decrease resistance to frost heave, susceptible to chemical attack/reactivity, and reinforcement corrosion.
- APermeable
11Permeable concrete is caused by a w/c ratio [blank_start]>[blank_end] 0.58 (too [blank_start]much[blank_end] water), incomplete consolidation (too much trapped [blank_start]air[blank_end]), and excessive water evaporation during curing.
- A>
- Bmuch
- Cair
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- Description
- Engineering (CE Materials) Quiz on Chapter 7, created by Kiki Medina on 20/04/2019.
- Author
- Kiki Medina
- Language
- English
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