Neutralization test of concrete specimens! Unique structure with no airflow bias!
This is a testing device that maintains a constant temperature, humidity, and CO₂ concentration in the chamber to promote the carbonation of concrete specimens. It has a structure that prevents airflow bias, ensuring a stable testing environment at any location within the test chamber. Additionally, it also minimizes the consumption of CO₂ gas.
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basic information
【Features】 ● Achieves stable temperature, humidity, and CO2 distribution at any position within the test chamber ● The door features a double special packing design that prevents CO2 leakage and a safety automatic locking mechanism ● The interior of the chamber is made entirely of stainless steel, eliminating corrosion issues 【Specifications】 ■ Compliance Standard: JIS A 1153 ■ Temperature Control Range: +20 ℃ to +60 ℃ ± 1 ℃ ■ Humidity Control Range: 30 to 90 % RH ± 5 % RH ■ CO2 Concentration: 0 to 20 % ■ External Dimensions: W 1450 × D 950 × H 1700 mm ■ Internal Dimensions: W 700 × D 850 × H 1220 mm ■ Material: Stainless steel (for both interior and exterior, including the cooler) ■ Shelf Load Capacity/Number of Shelves: 100 kg per shelf × 6 shelves ■ Humidity Sensor: Capacitive electric sensor ■ Safety Devices: Heater / Humidifier / Over-temperature prevention thermostat fan / Overload prevention relay for the refrigeration unit *We can accommodate specifications not listed above. Please feel free to contact us for inquiries or consultations.
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※The status of orders may fluctuate, so please inquire as needed.
Applications/Examples of results
- Neutralization test of concrete specimens - Neutralization test of gypsum boards, cement-based building material boards, and slates
Detailed information
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With a left-right convection structure, a stable testing environment is achieved. Marui's neutralization testing device circulates air adjusted in the air conditioning chamber in a consistent left-right direction within the testing tank, allowing for stable temperature, humidity, and CO2 concentration at any position inside the tank. Additionally, by placing the humidifier outside the testing tank, there is no excess CO2 intake, resulting in cost savings. Furthermore, the drain water is structured to return to the humidifier, contributing to water conservation.
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The capacitive humidity sensor offers excellent humidity management accuracy. In neutralization testing machines that use a wet and dry bulb hygrometer for humidity management, there is a possibility of errors due to factors such as handling of gauze, ventilation conditions, water quality, and temperature fluctuations. Achieving consistently accurate measurements requires considerable know-how, and there is also a need for management and replacement to prevent the deterioration of the gauze. Marui's neutralization testing equipment employs a capacitive humidity sensor, eliminating such measurement errors and management hassles, allowing for stable conditions within the test chamber at all times.
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Measures against CO2 leakage are thorough. Double special gaskets are used in the door section to prevent CO2 from leaking. Additionally, the structure is designed with safety measures in mind, including a "safety automatic lock function" to prevent accidents from inadvertently opening the device door during testing.
Company information
Marui is promoting the development of new testing equipment and the automation of testing devices through the introduction of cutting-edge technology, and has released the automatic pressure testing machine "Hi-ACTIS-2000," a concrete freeze-thaw testing device, and the specimen polishing end face finishing machine "Haikenma Tsuru Tsuru." Additionally, the simple ground bearing capacity measuring device "Caspole," developed through joint efforts of government, academia, and industry, is also a significant achievement. To continue advancing as a comprehensive testing machine manufacturer that creates an environment for the 22nd century, and to meet our customers' expectations, we will continue to make further efforts.
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