Maturity Meter

Strength Measurement

Maturity monitoring made simple

Method enabling, from concrete temperature monitoring, the determination of its strength at any point in a structure.

Reliable, efficient and instantaneous method.

This method consists, from concrete temperature monitoring, in determining the degree of advancement of chemical reactions corresponding to its hardening.

It ultimately enables knowing the in-situ concrete strength from the relationship between degree of advancement and strength determined by calibration performed in the laboratory.

The method is based on Arrhenius’ law, which enables expressing the ratio K between the times required to obtain the same degree of hardening at temperatureqand 20°C.

The maturity meter complies with:

• the recommendations of the CALIBRE National Project
• the LCPC technical guide on maturity monitoring
• standard ASTMC1074-98 (Estimating concrete strength by maturity method)

Although underused on construction sites, it nevertheless provides significant improvements in terms of:

• Safety: for delicate operations such as formwork removal, lifting, cable tensioning…
• Productivity gain: direct reading of results
• Quality: avoiding the risk of cracking, by controlling durability, color,…

Product +:

• Entirely French manufacturing
• Extremely resistant and waterproof carrying case.
• Waterproof connectors
• High-precision digital probes.
• LED indicator (alert when programmed target strength value is reached).
• Dedicated control software with data processing and graphics
• Automatic software and unit update via internet
• Possibility of real-time remote data export

Specifications:

• 4 acquisition channels
• Waterproof digital thermocouple
• Measurement range: -55 °C to +125 °C
• Accuracy / Resolution: 0,5 °C / 0,1 °C
• Cable length: up to 100 m
• Memory capacity: 2 GB
• Data capacity: 600 points
• Recording intervals: adjustable from 1 to 20 mminutes
• Battery: 12 V, rechargeable on mains 220 V (approximately 4h)
• Recording autonomy: 200 h at 20 °C
• USB port 2.0
• Windows-compatible software
• Case dimensions: 27 x 25 x 12 cm
• Weight: 8 kg
• Supplied in resistant and waterproof case

REF: LMATUROMETRE