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Hamburg (Immersion) Wheel Tracker
The Hamburg type dual arm immersion wheel tracker is widely used to evaluate the resistance to rutting and moisture susceptibility of asphalt mixtures following either EN12697-22 or AASHTo-T324.
The device was developed in the 1970’s by Esso A.G. of Hamburg, Germany. It was based on the TRL wheel tracker which is also now included in EN12697-22. Originally the Hamburg test was used by the City of Hamburg to measure rutting susceptibility. The test was performed for 9,540 wheel passes at either 40 or 50℃. Water was used to obtain the required test temperature rather tha air. The City of hamburg later increased the numberof wheel passes to 19,200 and found that some mixtures began to deteriorate from moisture damage. Geater than 10,000 wheel passes was generally needed to show the effects of moisture damage.
Key Features
- Able to perform AASHTO-T324 and EN 12697-22
- A dedicated immersion wheel tracker
- A mechanical re-circulating water bath controls the temperature to within ± 0.5 ℃ in a range of (20-75)℃
- Variable speed range between 15 and 30RPM
- Two displacement transducers attached to the wheel support arms measure the depth of the ruts as they develop with a resolution of 0.01mm to a maximum rut depth of 50mm
- The depth of the rut is measured automatically and constantly as specified in the AASHTO and EN standards
- Various mould options including laboratory compacted and cores (AASHTO and EN)
- UKAS Certificate supplied
Key Uses
Standards
- EN 1269-22
- AASHTO-T324
- Other national standards where relevant
Click here to download the fact sheet.
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For more information, please contact:
Nelson Lee at 6017 5293 or email: nelsonlee@epc.com.hk
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12/F Asia Trade Ctr., 79 Lei Muk Rd., Kwai Chung, N.T.
Tel: (852) 2392 8698 Fax: (852) 2395 5655
Email:info@epc.com.hk Website: www.epc.com.hk
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