WebThe Hamburg Wheel-Tracking Device (HWTD) is a torture test that indicates susceptibility to premature failure of hot mix asphalt (HMA) paving mixtures that may be attributed to such factors as: • a weak aggregate structure, • inadequate binder stiffness, • moisture damage, and • inadequate binder to aggregate adhesion. WebJun 8, 2024 · The Hamburg Wheel Tracking Test (HWTT) has been widely accepted as a reasonable and reliable test to evaluate the rutting and moisture damage performance of asphalt mixtures. The standardized protocol for HWTT has been around under AASHTO Test Method T 324 for almost two decades.
Hamburg Wheel Tracking HMA Lab Supply
WebBureau of Transportation Statistics WebThe Hamburg Wheel Tracking Test (HWTT) per AASHTO T 324 is widely used by asphalt researchers and pavement engineers to evaluate the rutting resistance and moisture susceptibility of asphalt mixtures. According to a … education system in brunei
HWT-Pro™ InstroTek, Inc.
WebJan 1, 2006 · In terms of moisture damage, the Hamburg Wheel-Tracking Device Test (HWDT) has been evaluated in terms of determining the moisture sensitivity of asphalt mixtures and in predicting field... WebOct 23, 2024 · The Hamburg Wheel Tracking (HWT) device is a laboratory-7 controlled rut depth test that uses loaded w heel(s) to apply a moving load on as phalt 8 mixture specimens to simulate traffic load ... WebThe Hamburg Wheel Tracking Device (HWTD) tests rut resistance by tracking a loaded steel wheel back and forth across an asphalt pavement sample. By repeating this for thousands of cycles, it simulates the effect of traffic loading on the pavement over time. The device measures the rut depth in the sample continuously during the test. construction worker silhouette