Heat-Box
Hardware and Software for Measuring Heat of Hydration of Concrete
When planning concrete castings, the Heat of Hydration is an important parameter.
The adiabatic development of the Heat of Hydration is easy to determine by means of a Heat-Box.
The Heat-Box is installed in a robust box and is suitable for use at the construction site as well as in a laboratory.
The Heat-Box is shaped as a cube with the dimension 60 cm. Inside the cube are insulation material and space for a 150 mm concrete cylinder. The weight of the Heat-Box is app. 25 kgs without concrete.
A data logger and software, for calculation and presentation of results, are also included.
Operation
The Heat-Box is a semi-adiabatic calorimeter. When fresh concrete is placed in the equipment, the development of the temperature is registered together with the ambient temperature.
When the measuring is finished the software is calculating the corresponding adiabatic development of the Heat of Hydration. A screenshot from the software is shown below. In the right side of the screenshot is shown the adiabatic heat development which results in a calculated temperature progress which is matching the observed history of temperature (shown in the left side). The calculations are based on 3D Thermal Analysis which takes into account the heat capacity and thermal conductivity of the Heat-Box.
Documentation
The Development of the Heat of Hydration can be expressed as a function of Arrhenius- or Nurse-Saul maturity. The function can be saved as a text-file (or as a b4cast "material") which directly can be used as input for simulations in relation to planning of construction methods. The software can also approximate the heat generation curve with a formula expression based on 3 characteristic parameters. The Heat of Hydration curve and the measured temperature courses are also available as printed output.
Licensing
The Heat-Box software is available with a time-limited license.
The software and license are provided over the Internet.
Instead of purchasing a Heat-Box it is possible to manufacture a simple insulating box locally and use your own data logger by following our instructions How to build your own Heat-Box.
Upon request can be informed about relevant suppliers
Free trial| Product | Price1) | ||
|---|---|---|---|
| Heat-Box including datalogger2) | 2400 USD | ||
| License Period | per month | per year | |
| Heat-Box Software including e-mail support and updates | 300 USD | 1800 USD | |
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All prices are exclusive VAT, taxes and duty.
The prices are ex. works, Allerød, Denmark.
Please state payment method when placing order (bank wire transfer or credit card).
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