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Questions and Answers
Concrete strength is positively affected by the presence of voids in the compacted mass.
Concrete strength is positively affected by the presence of voids in the compacted mass.
False (B)
Bleeding of concrete is primarily observed in a dry mix with proper proportions.
Bleeding of concrete is primarily observed in a dry mix with proper proportions.
False (B)
Segregation in concrete refers to the proper distribution of ingredients to make a non-homogeneous mixture.
Segregation in concrete refers to the proper distribution of ingredients to make a non-homogeneous mixture.
False (B)
The strength of concrete is derived from the evaporation of water content.
The strength of concrete is derived from the evaporation of water content.
Air entrainment in concrete increases the density and strength of the material.
Air entrainment in concrete increases the density and strength of the material.
Hydration of cement particles in concrete is a momentary action that stops after a short period.
Hydration of cement particles in concrete is a momentary action that stops after a short period.
Laitance is the term used for the separation of constituent materials in concrete.
Laitance is the term used for the separation of constituent materials in concrete.
Hardened concrete refers to the stage where the concrete is still curing and gaining strength.
Hardened concrete refers to the stage where the concrete is still curing and gaining strength.
To maintain hydration in concrete, extra water must be added only when needed, regardless of absorption and evaporation.
To maintain hydration in concrete, extra water must be added only when needed, regardless of absorption and evaporation.
Proper distribution of ingredients in concrete leads to a homogeneous mixture, which is characteristic of bad concrete quality.
Proper distribution of ingredients in concrete leads to a homogeneous mixture, which is characteristic of bad concrete quality.
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