What are the factors affecting the concrete?
Factors Affecting Strength of Concrete
- Quality of Raw Materials.
- Water / Cement Ratio.
- Coarse / fine aggregate ratio.
- Aggregate / Cement Ratio.
- Age of concrete.
- Compaction of concrete.
- Temperature.
- Relative humidity.
What is workability of concrete Mcq?
Explanation: The workability is defined as the ease with which a freshly mixed concrete can be properly compacted and also that it can be transported, placed, and finished.
Which factor among the following is used to determine the workability of concrete?
Explanation: Work ability of concrete is measured by slump cone test, compaction factor test. Slump cone is used for medium work ability.
What are the factors affecting setting time of cement?
The major factors affecting the time of setting are cement composition, water-cementitious material ratio (w/cm), temperature, and admixtures. When cement hydrates faster, the time of setting is reduced. Increases in the w/cm result in increased time of setting.
Which factors influence the workability of concrete without sacrificing strength?
Factors Affecting the Workability of Concrete
- Water Content [Water-to-binder Ratio]
- Cement Content.
- Cement Particle Size.
- Size and Shape of Aggregates.
- Grading and Surface Texture of Aggregates.
- Adding Admixtures to Concrete Mixtures.
- Using Supplementary Cementitious Materials.
What is workability of concrete and factors affecting workability?
Factors affecting the workability of concrete are materials such as water content, cement concrete, sand and aggregate properties such as size, shape, grading, mix design ratio and use of admixtures. Strength of concrete decreases with increase in workability of normal concrete affecting the durability of concrete.
What is the effect of water on the workability of concrete?
Workability of concrete increases with increase in water content. Higher the water content per cubic meter of concrete, the higher will be the fluidity of concrete, which is one of the important factors affecting workability. Adding more water to concrete also has some disadvantages as given below.
What factors affect the workability of a concrete mold?
Many factors affect. The workability of concrete is essential to allow concrete to be set and compressed into the formwork (in some cases with a concrete pump). The required processability (fluidity) depends on the mold’s size and shape and the pump’s use. An increase in water content increases but reduces final resistance.
What is the difference between workability and concrete?
Workability is a property of freshly mixed concrete, and a concrete is a mixture of cement, aggregate, water & admixture. Due to this all the properties of concrete, whether in fresh state or hardened state, is affected by these ingredients and their proportions.
What is the relationship between W/C ratio and concrete strength?
An increase in the w / c ratio indicates an increase in workability. The concrete’s strength is inversely proportional. That’s why excessive of concrete should be avoided. If the water content in the concrete is higher, it increases the workability of concrete.