UTAS-0786A  and UTAS-0787A  Automatic Marshall Compactors are designed for the preparation of 4” and 6” bituminous specimens with the same device for Marshall Stability tests

The compactors have a heavy-duty design that withstands the continuous shaking caused by the compaction process and they are equipped with a hand operated Mould fixing mechanism which locks the Mould in place during compaction and reduces vibration of the Moulds.

UTAS-0786A and UTAS-0787 Automatic Marshall Compactors are supplied complete 4” hammer. These compactors can easily be altered later to accommodate the 6” size by purchasing 6” hammer and molds. 6” hammer and the Moulds (4” or/and 6”) should be ordered separately.  

The number of blows entered in the control panel by the user is applied automatically. By selecting the 55 blow, these compactors comply with ASTM D6926-16 and apply a speed of 55±5 compaction blows per minute to a 4” specimens. Also these compactors comply with ASTM D5581 and apply between 75 and 112 compaction blows to 6” specimens.

The conveniently positioned control panel comprises of start/stop button, emergency stop button and a direct reading counter used to set the required number of blows. The operator can keep track of the number of blows on an LCD display.

The apparatus stops automatically after the preset number of blows.

The standard models can be supplied with a safety/noise reduction cabinet. The cabinet is lined internally with soundproofing material to reduce sound level conforming to CE directives

UTAS-0668 Marshall Steel Blocks which can be used for initial heating of the foot of compaction hammer and Marshall Moulds should be ordered separately.

Technical Specifications