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- In case of long haul involved in delivering ready-mixed concrete to the site of work, concrete is mixed intermittently to reduce the bad effect of continuous mixing. A pertinentpoint to note in this connection is that when the concrete is mixed or agitated from time to time with a short interval, the normal rule of initial setting time is not becoming applicable.The concrete that is kept in agitation, does not exactly follow the setting time rule as applicable to concrete kept in an unagitated and quiescent condition.
workability is the ease and homogenity with which the concrete can be mixed , transported , poured , consolidated and finished
The more the water cement ratio the more workable the concrete will be , but it does not mean that we should keep on increasing water cement ratio because it will decrease the strength and will cause bleeding and segregation of concrete 08ce69 quaid e awam university nawabshah
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What do you mean by workability?
workability is the work of the concrete which is done by concrete ability of work is called workability
What is the importance of slump test in concrete work?
The importance of slump test in concrete work is to ensure consistency in the concrete. The test measures the workability of the concrete.
How to improve the workability of concrete?
To improve the workability of concrete, issue to be concerned of as below: - increase water/cement ratio - increase size of aggregate - use well-rounded and smooth aggregate instead of irregular shape - increase the mixing time - increase the mixing temperature - use non-porous and saturated aggregate - with addition of air-entraining mixtures
Why is it important to have workable concrete?
simply workabilty is the w/c ratio in concrete. more the w/c ratio higher the workability and vice versa. and it is true that excess amount of w/c ratio doesnt give proper strength. so workable concrete i.e, concrete with proper w/c is must for good strength. *note: not considering the mix of concrete.
What is meant by a 'concrete command'?
It means that you have to do it now. So if someone tells you a concrete command you better do it
What do you mean by workability?
workability is the work of the concrete which is done by concrete ability of work is called workability
What is the measurement of workability?
Workability of Concrete
What is the effect of grading of aggregate on workability?
Grading of Aggregates enhances workability of concrete.
How the changing of workability when the concrete mixture containing high aggregate content?
Aggregate to cement ratio is an important thing which affects the workability....! If the aggregate/cement ratio is higher , the concrete will be Leaner. Less quantity of paste is available for lubrication, Hence workability decreases..!! On the other hand if the aggregate/cement ratio is lower, the concrete will be fatty. Higher quantity of paste is available for lubrication. Hence workability increases. ! Thus Higher aggregate content leads to lowering of workability....!
What is the slump test normally used to evaluate?
the workability of a concrete mixture
What is the importance of slump test in concrete work?
The importance of slump test in concrete work is to ensure consistency in the concrete. The test measures the workability of the concrete.
What the importance of slump test in concrete work?
The importance of slump test in concrete work is to ensure consistency in the concrete. The test measures the workability of the concrete.
What is the workability of concrete?
The property of concrete which determines the amount of useful work (like- water content, mix proportion, size of aggregate used and use of admixtures) necessary to produce full compaction is called workability.
Define workability in concrete?
ease with which concrete can be compacted hundred percent having regard to mode of compaction and place of deposition
What Meaning of workability?
work ability is an work of concrete done by cement of ability is called work ability
What is concrete mix design?
Its the process of selecting suitable ingredients of concrete and determining their relative amounts with the objective of producing a concrete of the required, strength, durability, and workability as economically as possible, is termed the concrete mix design.
What is bycol?
Bycol Clear is an air-entraining admixture used to improve the workability of brickwork mortars and concrete mixes.
