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Question
Permeability in concrete is studied towards, providing for, or guarding against, which of the following features?
1. The penetration by materials in solution may adversely affect the durability of concrete; moreover, aggressive liquids 'attack' the concrete.
2. In case of reinforced concrete, increase of moisture and air will result in corrosion of steel leading to an increase in volume of steel. resulting in cracking and spilling of the concrete cover.
3. The moisture penetration depends on permeability and if the concrete can become saturated with water it is less vulnerable to frost action.
Permeability in concrete is studied towards, providing for, or guarding against, which of the following features?
1. The penetration by materials in solution may adversely affect the durability of concrete; moreover, aggressive liquids 'attack' the concrete.
2. In case of reinforced concrete, increase of moisture and air will result in corrosion of steel leading to an increase in volume of steel. resulting in cracking and spilling of the concrete cover.
3. The moisture penetration depends on permeability and if the concrete can become saturated with water it is less vulnerable to frost action.
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Solution
The correct option is B 1 and 2 only
Moisture penetration depends on permeability but when concrete is saturated with water, then the chance of frost action will be more.
In permeable concrete, increase of water leads concrete susceptible to chemical attack, frost action rusting of steel reinforcement.
Moisture penetration depends on permeability but when concrete is saturated with water, then the chance of frost action will be more.
In permeable concrete, increase of water leads concrete susceptible to chemical attack, frost action rusting of steel reinforcement.
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