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The working nature of concrete, how to choose concrete machinery

Author: admin Release time: August 18, 2016 Number of visits:

The working nature of concrete, how to choose concrete machinery As the material of construction engineering and water conservancy engineering, the main performance indexes of concrete are workability and strength. The workability of concrete refers to its workability.
Workability, also known as workability, refers to the concrete mixture composed of cement slurry and aggregate. Under certain construction conditions, it is convenient for various construction procedures to ensure the uniform and dense concrete. It is a comprehensive performance index, including fluidity, cohesiveness and water retention.
(1) Fluidity refers to the performance that concrete mixture can produce flow under its own weight or mechanical vibration and fill the formwork evenly and compactly. It reflects the thickness of concrete mixture.
(2) Cohesiveness refers to the concrete mixture has a certain degree of cohesion in the construction process, so that the aggregate is evenly distributed in the cement slurry without causing stratification and segregation. It reflects the uniformity of concrete mixture.
(3) Water retention refers to the ability of concrete mixture to keep water in the construction process. The concrete mixture with poor water retention will form a loose layer on the surface of the pouring surface and form pores easy to water permeability after hardening. It reflects the stability of concrete mixture.
The above performances are interrelated and contradictory. If the cohesion is good, the water retention is good, but when the fluidity increases, the cohesion and water retention are often poor. Therefore, it is necessary to select appropriate workability according to the needs of different projects. Concrete machinery should be selected according to the workability of concrete.
Changcheng Jianji concrete mixer, concrete mixing plant Henan manufacturers, production of JDC single horizontal shaft forced mixer and double horizontal shaft forced mixer, jdc350, jdc500, JS500, 750, 1000, 1500, 2000, duo00, etc., as well as HZS concrete mixing station and WBZ stabilized soil mixing station.
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