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 within the chamber to promote the carbonation of concrete specimens. It features a structure that prevents airflow bias, ensuring a stable testing environment at any location within the test chamber. Additionally, it minimizes CO₂ gas consumption. 【Features】 ● Achieves stable temperature, humidity, and CO₂ distribution at any position within the test chamber ● The door is designed with a double special packing to prevent CO₂ leakage and features a safety automatic locking mechanism ● The interior of the chamber is made entirely of stainless steel, eliminating corrosion issues.
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basic information
【Specifications】 ■Standard Compliance: 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 1050 × D 890 × H 1620 mm ■Internal Dimensions: W 530 × D 540 × H 740 mm ■Material: (Both interior and exterior, including the cooler) made of stainless steel plate ■Shelf Load Capacity/Number of Shelves: 100 kg / shelf × 4 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.
Price range
Delivery Time
※The delivery date may vary depending on the order status, so please feel free to inquire at any time.
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 structure allows drain water 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 manage humidity using a wet and dry bulb hygrometer, 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 expertise, 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 testing 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, with the "automatic safety lock feature," the structure is designed with safety measures in mind to prevent accidents from inadvertently opening the device door during testing.
Line up（1）
| Model number | overview |
|---|---|
| MIT-639-3-05 type | Test specimen storage capacity is large, "Standard type carbonation acceleration testing device" ■External dimensions: W 1450 × D 950 × H 1700 mm ■Internal dimensions: W 700 × D 850 × H 1220 mm ■Shelf load capacity/number of shelves: 100 kg / level × 6 shelves |
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.