Designed for both advanced research and daily quality control, the WTIM-A delivers unmatched precision in evaluating asphalt mixtures for rutting resistance and moisture susceptibility. Fully compliant with the latest AASHTO T324 and EN 12697-22 standards, this dual-arm wheel tracker offers future-proof performance and energy-efficient operation.
Key Benefits
✔ True Sinusoidal Motion
Our refined Scotch yoke mechanism ensures perfect sinusoidal movement throughout the stroke—meeting international standards and delivering consistent, repeatable test results.
✔ Research Grade Precision
Capture detailed rut profiles with 230 data points across the sample. Set loads from 520N to 1600N in 1N increments. Flexible parameters and powerful analysis tools make it ideal for evolving research and future test standards.
✔ Built for Contractors
Optimised for workflow efficiency with automatic test scheduling and preconfigured test routines. Designed to simplify quality control and minimise operator time.
✔ Energy Efficient Operation
Smart heating technology, supported by three temperature probes, ensures accurate and uniform temperature control with reduced power consumption.
✔ User-Centric Design
Enhanced safety with emergency stops on all sides and a new protective guard. Automatic electromechanical arms reduce operator strain and improve accessibility.
Advanced Software Package
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Preconfigured and fully customisable test profiles
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Supports AASHTO, EN, BS, AGPT, TxDOT, and CalTrans methods
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Multi-language support in test software and reports
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Automatic final rut profile screenshots
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Network-compatible reporting tool for remote access
Compliant with Major Standards
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AASHTO T324:2019
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EN 12697-22:2020
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AGPT-T231
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Tex-242-F:2021
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BS 598-110
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CT 389:2020
Key Features
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230-point rut depth measurement for advanced analysis and higher accuracy
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Scotch yoke motion system with industry-leading 0.039mm RMSE, independently validated (NCHRP Report [1])
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Adjustable wheel load from 520N to 1600N (1N increments)
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Variable wheel speed from 10 to 36 cycles per minute
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Triple temperature probes ensure ±0.1°C chamber control
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Dual-specimen testing with fully flexible profiles
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Auto water tank filling & levelling for wet tests (AASHTO & EN compliant)
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Quick-switch dry hood for wet-to-dry transitions
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Universal mould clamp—no extra parts needed
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Multiple mould sizes supported (305x305mm, 260x320mm, 305x400mm, 200mm and 150mm cores, up to 100mm high)
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Three emergency stops with integrated safety circuit
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Quick-access panels for streamlined maintenance
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UKAS calibration certificate provided when applicable
Applications
Routine & Advanced Testing
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Superpave mix evaluations
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Balanced mix designs
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Asphalt QC/QA
Research & Development
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Rutting and moisture resistance
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Recycled materials
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Environmental and scuffing studies
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Pothole and road marking durability