Measurement of Fresh Concrete Unit Water Content by COARA for Tunnel Construction
Continuous RI Concrete Moisture Meter "COARA"
Real-time measurement of the total amount of concrete placement to improve the quality and efficiency of tunnel construction.
In tunnel construction, the quality of concrete affects the durability of structures and can lead to delays in the construction schedule. In particular, the management of unit water content significantly impacts the strength of concrete and the risk of cracking. COARA enhances quality control by continuously measuring the unit water content of fresh concrete in real-time, enabling rapid response in the event of issues. 【Usage Scenarios】 - Concrete pouring for primary and secondary lining of tunnels - Quality control at ready-mix concrete plants - Data verification at site offices 【Benefits of Implementation】 - Stabilization of concrete quality - Assurance of traceability - Potential for shortened construction periods - Accumulation of maintenance management data
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【Features】 - Installed in the piping section of concrete pump trucks to continuously measure unit water volume - Measurement data can be checked in real-time - Measurement data is stored as electronic data, contributing to traceability - Compatible with 4, 5, and 6-inch piping - Built-in vibration sensor 【Our Strengths】 As an RI measuring instrument manufacturer established in 1974, we contribute to ensuring quality at construction sites with our years of experience and technical expertise. We handle everything from the development and manufacturing of RI measuring instruments to rental and maintenance in-house, supporting our customers.
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【Purpose】 ■ Concrete quality control ■ Measurement of unit water volume 【Examples of Achievements】 ■ Public works (Ministry of Land, Infrastructure, Transport and Tourism; NEXCO commissioned projects) and others
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Since our establishment, we have developed many measurement technologies that utilize various types of radiation emitted by radioisotopes, particularly gamma rays and neutron rays, in the construction field, specifically the RI method. The characteristics of the RI method are "non-destructive," "rapid," and "high precision." Currently, based on the development of unique measuring instruments that leverage these characteristics and the proposal of investigation methods, we focus on consulting that comprehensively addresses issues related to ground and soil construction by combining soil and geological surveys. Additionally, we also engage in the sale and rental of these RI instruments. Please feel free to contact us if you have any requests.
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