• Calorímetro Isotérmico

Calorímetro Isotérmico

Ref. I-Cal 2000 HPC Isothermal Calorimeter
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  • Calorímetro Isotérmico
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    Detalhes do Produto

    I-Cal 2000 HPC ("High Precision Calorimeter") is a 2-channel Isothermal Calorimeter. Like all Calmetrix I-Cal isothermal calorimeter models, I-Cal 2000 HPC features a sample size of up to 125ml, which can be used for applications in multiple fields, including R&D and Investigative work on concrete properties as well as daily QC needs in Cement and Concrete production. Variable reference cells make I-Cal 2000 HPC a versatile equipment, making it possible to test cement, mortar and real concrete, or other materials of various types and sample sizes.

    I-Cal 2000 HPC is suitable for long term testing of cement hydration up to 28 days or longer. 

     

    In addition, I-Cal 2000 HPC is fully compliant with both ASTM C1679 ("Standard Practice for Measuring Hydration Kinetics of Hydraulic Cementitious Mixtures Using Isothermal Calorimetry") and ASTM C1702 ("Standard Test Method for Measurement of Heat of Hydration of Hydraulic Cementitious Materials Using Isothermal Conduction Calorimetry")

     

    Just like for other Calmetrix I-Cal calorimeters, the ambient temperature around the samples is computer-controlled by Calmetrix's software interface, with precision sensors measuring the heat flow generated by the cement hydration reaction. But I-Cal 2000 HPC distinguishes itself by its clever design to minimize sensitivity to outside conditions. This means more consistent results, but also a robust performance even in a non-air conditioned environment, a definitive benefit in terms of reproducibility, and cost savings for field laboratories or rooms that are not tightly air-conditioned. Furthermore, I-Cal 2000 HPC's two active sample cells are not in contact with each other, thereby keeping cross-talk below 0.1%.

     

    Applications:

    I-Cal 2000 HPC is well adapted for applications in R&D and Investigative work on cement and concrete properties, as well as daily QC needs in cement and concrete production. Typical uses are:

    • heat of hydration measurement as per ASTM C1702

    • detection of potential material incompatibility (between cement and admixtures, etc.)

    • sulfate optimization

    • sensitivity tests on variations in admixture or other material content

    • estimation of compressive strength using heat of hydration curves

    • determination of activation energy for thermal crack prediction 

    • sensitivity tests on temperature variations

    • mix design optimization and statistical performance analysis​

    • test temperatures of more than 50 °C (up to 70 °C), e.g. for studies of delayed ettringite formation

    • characterization of supplementary cementitious materials

     

    When to consider an I-Cal 2000 HPC:

    ​I-Cal 2000 HPC is the right isothermal calorimeter for experiments that have the following characteristics:

    curing at any temperaure, and up to 70 °C when needed

    test durations of any length, up to 28 days or even longer

    Heat of hydration testing as per ASTM C1702 

    high precision studies with need for best signal/nose ratio (minimum cross-talk)

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