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Check once more each area has been filled in correctly. Click Done in the top right corne to save or send the document. There are many alternatives for getting the doc. As an instant download, an attachment in an email or through the mail as a hard copy. Get form. Get Form. Extruding Related content. Related links form. Get This Form Now! Featured is a proven method of compaction, using a fixed angle, constant consolidation pressure and a set rate of gyration.
And, it operates so quietly, you hardly know it's running. The mold may now be moved directly from the consolidation chamber to the extruder without lifting. Output of specimen height is automatically directed to a printer or computer during the consolidation cycle or stored and downloaded after compaction is complete.
The TMA is a new device developed by Troxler for use by the gyratory compactor owners to verify and calibrate the angle of gyration. It is an external apparatus that is totally passive and does not affect the operation of the compactor under test. How does it work? The TMA uses a simple trigonometric function to calculate the gyratory compactor angle. Because the TMA is secured to the frame of the compactor, the angle is net of any frame deflection that may occur due to resistance of the specimen to compaction.
Angle measurements can be made during the actual compaction process. TMA Operator's Manual for Model TMA Operator's Manual for Model Benefits Measurement of compaction angle dynamically and in real time The two measurement points are separated to a distance that ensures an accurate mold angle measurement This measurement technique conforms to the provisions of AASHTO T Operates with standard vac power, no need to worry about low batteries and lost data No limitations on sample size, no data extrapolation needed Measure the angle any time as the mixtures are compacted top GYROPAC The Gyropac is an electro-pneumatic machine designed to produce mm and mm diameter cylindrical asphalt specimens of specified density.
During gyratory compaction, the asphalt mix is subjected to shearing forces similar to those encountered under a roller during the road construction process. The Gyropac has two modes of operation; to allow a specimen to be compacted to a predetermined height 65 mm for mm diameter and 85 mm for mm diameter , or to compact specimens for a pre-set number of gyrations.
These authorities have specified the Gyropac as the preferred machine for Australian Standard test methods: AS Compaction is achieved by the simultaneous action of static compression and the shearing action resulting from the mould being gyrated through an angle about its longitudinal axis. A number of ergonomic features have been designed into the machine to ensure operator safety and minimal manual exertion while handling the hot and heavy asphalt filled moulds.
The mould may be slid from a bench directly into the compaction chamber and, following compaction, to the pneumatically operated specimen extraction device, thus eliminating any lifting. The compaction chamber is completely enclosed, and the access door is fitted with safety glass to allow the operator to view the compaction process. The door closes and opens automatically and a safety interlock prevents the machine from operating while it is open. An emergency stop button is provided.
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