Concrete Thickness & Asphalt Thickness Test for Pavements – MIT-SCAN-T3 Overview
The MIT-SCAN-T3 is a non-destructive test (NDT) for the measurement of concrete thickness and asphalt thickness for pavements, airport runways, port hardstands, slabs, tunnel linings, walls etc. The thickness or depth of each layer of concrete or asphalt is measured using Magnetic Imaging Tomography technique (MIT), a technique which uses reflectors inserted into the pavement during construction, according to AASHTO T359-16 (Concrete) and EN 12697-36:2003 (Hot Mix Asphalt – HMA).
The consistent application of a required depth of concrete thickness or asphalt thickness is important to road construction contractors and their clients, the road authorities and councils who need to verify that the asphalt or concrete has been laid to the required thickness. The MIT-SCAN-T3 enables you to perform this task efficiently. The accuracy of the MIT SCAN is ± (0.5% of measured thickness + 1mm). This compares favourably with surveying or coring. The equipment compensates for changing environmental conditions. This includes wet road surfaces or magnetic aggregates.
The MIT SCAN-T3 can be used directly after the application and rolling of hot asphalt. This means that it can be used to measure partial layer thickness to ascertain exactly how much material is required to bring the pavement thickness up to the final required level. It can also be used on milled surfaces.
The MIT-SCAN-T3 can also be used immediately after concrete has been laid. As soon as you can walk on the concrete, you can measure the concrete thickness.
Other advantages of the MIT-SCAN-T3 from MIT Mess- und Prüftechnik include:
- Non-destructive measurement (NDT) so reduces or eliminates coring
- GPS-System to immediately determine and record your position integrated with Google Maps
- Fast and repeatable
- Easy data management for storage, presentation and geo-positioning using the PC-based software
- Light, hand held device, take-apart for transport
- No impact from wet road surfaces or magnetic aggregates
- Common reflectors allow measurements up to 500 mm (20 inch)
- Only rough localisation of the reflectors before measurement with no exact determination of reflector centre necessary
- Measurements possible on steel reinforced bridges
- Check of dimensions & condition of in-pavement reflectors
- Calibration for customer specific reflectors possible
- Can be integrated into automatic reflector laying and thickness measurement systems
Here you will find more detail about how the equipment works in practice.
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