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Fresh-Concrete Pressure Calculator
Pouring rate can now be calculated online
The online version of the Doka Fresh-Concrete Pressure Calculator is a quick and easy way to calculate the rate of placing and maximum fresh-concrete pressure allowed by DIN 18218.
The rate at which concrete can be placed has a very great influence on the speed, and thus the economic efficiency, of in-situ concreting work.
Where concretes of consistency classes F5, F6 and SCC are used, this can greatly reduce the amount of compaction required and considerably increase the rate of placing.
Together with the trend towards ever-longer deferral of the end of setting, this leads to significantly higher fresh-concrete pressures. To prevent unacceptable deformation, damage or (in extreme cases) even the failure of the formwork construction and the building element, the fresh-concrete pressure must be suitable for the formwork – and vice-versa. The rate of placing is the critical parameter here.
Up to a pour-height of 3.30m, the fresh-concrete pressure does not yet need to be taken into account regarding the construction procedure or formwork technology, as conventional framed formwork systems also withstand hydrostatic pressure conditions up to this height.
With the Doka Fresh-Concrete Pressure Calculator, you can either work from a stipulated max. fresh-concrete pressure to calculate the rate of placing, or – conversely – from a stipulated rate of placing to calculate the max. pressure of the fresh concrete. This makes it easy to use the revised DIN 18218 “Pressure of fresh concrete on vertical formwork”, issued in January 2010, having regard to such factors as the end of setting, the consistency class and the temperature of the concrete.
In a second data-entry box, you can also make individual settings for the specific gravity of the concrete, LH cements and the influence of the outside temperature, enabling you to calculate special cases.
You can also install the Doka Fresh-Concrete Pressure Calculator on your PC as a free offline application.
