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Engineering   Fabrication   Maintenance

This is how pre-cast concrete is created

By nothingbutnet, May 23 2016 10:00PM

The Process Of Pre Cast Concrete


Approximately 6% of the building frame market of concrete structures are precast. The individual components are taken to the site where they are erected after being prefabricated somewhere off site.


The pre cast concrete process is illustrated by the following figures:


1. Reinforced cages and main connections production:


For the manufacture and the maintenance of moulds, the precast factory often has specialist workshops, as well as for the production of cages and connections that are jig-built reinforced.


2. Mould assembly:


In the partly assembled mould, the reinforced cage is positioned and then completed is the remaining mould section.


3. Pouring of the mix:


Placed into the mould is carefully specified concrete. Computer controlled batching plants are now employed by many precast works.


4. Using poker vibrator, compaction of concrete:


To ensure that specified strengths are achieved and optimum density is obtained, using high-frequency external vibrators or pokers, concrete is placed and compacted.


5. To the storage area, precast concrete is moved:


The precast units are moved to the storage area, after an appropriate strength has been reached. As part of the rapid production cycle, within hours of casting units are usually handled.


A high degree of dimensional accuracy and quality of finish is exhibited by the product. And through the repetitive and automated process, economies of production are achieved.


6. In work areas, storage of high-quality units:


On plastic pads or clean battens, positioned to suit the component's design, the finished precast components are stacked. Much care is taken to make certain that placed within the stack directly above one another are the battens and that the stacks are kept vertical.


7. Transportation to site:


In a pre-determined sequence the components are delivered to the site to make certain that ready for instant erection is that hardened concrete.


8. At site erection:


Straight from the lorry the components are erected. This leads to reduced on-site activity and faster erection times.


9. Building finished.


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