Workability of fresh concrete has a direct effect on the pump-ability and constructibility because it determines the ease with which a concrete mixture can be handled without harmful segregation. In all likelihood, a concrete mixture that is difficult to place and consolidate will not only increase the cost if handling but will also have poor strength, durability, and appearance. Similarly, mixtures prone to segregate and bleed are more expensive to finish and will yield less durable concrete. Thus, workability can affect both the cost and the quality of concrete mixtures. How to ensure the quality of mixed concrete mixtures? Except for a good electric or concrete mixer diesel engine, there are also other things to follow:
First, the consistency of concrete should be no more than necessary for the ease of placing, compaction, and finishing.
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Second, the water requirement for a given consistency increases with both sand/coarse aggregate ratio and the amount of fines in the sand. Whenever possible, the cohesiveness and finish-ability of concrete should be improved by increasing the sand/coarse aggregate ratio alone rather than by increasing proportion of fine particles in the sand.
At last, for concrete mixtures requiring high consistency at the time of placement, the use of water-reducing and set-retarding admixtures should be considered rather than the addition of extra water at the job site; water that has not been accounted for in the mixture proportioning is frequently responsible for the failure of concrete to perform according to design specifications.
However, concrete mixing machine also plays an important role in it, and if investors have doubts about it, why not contact us immediately to check our concrete mixers for sale?
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