Marshall Compactors

Marshall Compactors compact hot mix asphalt test specimens for Marshall stability and flow testing, density/void determinations, and specific gravity. Compactors are available in manual or automatic models. Specimen diameter is determined by the maximum aggregate size. 4in (101.6mm) diameter specimens are suitable for mixes containing aggregates up to 1in (25.4mm), and 6in (152.4mm) diameter specimens are used for aggregate sizes up to 1-1/2in (38.1mm).

Use the chart below to compare operation, base rotation, number of test stations, and mold size between the different Marshall compactors.

Marshall Compactor, Manual, 4in Mold

$1,250.00

Model: MS-50

Marshall Compactor, Mechanical, Stationary Base, 4in Molds, 55BPM

Starting at $3,790.00

Models: MS-53, MS-53F, MS-53S

Marshall Compactor, Mechanical, Stationary Base, 4in Molds, 64BPM

Starting at $3,432.00

Models: MS-52, MS-52F, MS-52S

Marshall Compactor, Mechanical, Rotating Base, 4in Molds

Starting at $7,097.00

Models: MS-54, MS-54F, MS-54S

Marshall Compactor, Automatic, Rotating Base, Double 4in Molds

Starting at $5,500.00

Models: MS-2, MS-2F

Marshall Compactor, Automatic, Rotating Base, Triple 4in Molds

Starting at $7,600.00

Models: MS-3, MS-3F

Marshall Compactor, Mechanical, Rotating Base, 6in Molds

Starting at $7,157.00

Models: MS-56, MS-56F, MS-56S

Marshall Compactor Models	Manual Operation	Automatic Operation	Stationary Base	Rotating Base	Number of Test Stations	Mold Size (in)
MS-50	X	–	X	–	1	4
MS-53	–	X	X	–	1	4
MS-52	–	X	X	–	1	4
MS-54	–	X	–	X	1	4 / 6
MS-2	–	X	–	X	2	4
MS-3	–	X	–	X	3	4
MS-56	–	X	–	X	1	6 / 4

Gilson’s Manual Marshall Compactor implements a hand-operated drop hammer on a guide rod to compact asphalt samples and is suitable for periodic use. The Manual Compactor utilizes a stationary mold and a flat-faced hammer to compact the asphalt specimen evenly.

Mechanical Marshall Compactor models are available with stationary or rotating bases to compact 4in or 6in diameter asphalt specimens at 64 blows per minute (BPM). MS-53 has a stationary base and compacts 4in diameter specimens at 55BPM.

Automatic Marshal Compactors have rotating bases and are configured to compact two or three 4in diameter specimens simultaneously for increased throughput in high-volume testing labs.

Mechanical and automatic models use electric motors to automatically raise the drop hammer between successive blows and feature a hammer-blow counter that turns the unit off when compaction is complete. This ensures uniform sample preparation and allows the mold to be inverted and compacted on the opposite side with the same number of blows. Additional mold and hammer assemblies are available for increased efficiency.

MS-50 Marshall Compactor, Manual, 4in Mold uses a manually operated drop hammer to compact a 4in Marshall asphalt specimen in a stationary mold.
MS-53 Marshall Compactor, Mechanical, Stationary Base, 4in Molds, 55BPM compacts a Marshall specimen into a stationary 4in (102mm) mold at 55 beats per minute.
MS-52 Marshall Compactor, Mechanical, Stationary Base, 4in Molds, 64BPM compacts a Marshall specimen into a stationary 4in (102mm) mold at 64 beats per minute.
MS-54 Marshall Compactor, Mechanical, Rotating Base, 4in Molds compacts a Marshall specimen into a 6in rotating mold at 64 beats per minute.
Marshall Compactor, Automatic, Rotating Base, Double 4in Molds compacts two 4in Marshall asphalt specimens at the same time in a rotating mold at 64 beats per minute.
Marshall Compactor, Automatic, Rotating Base, Triple 4in Molds compacts three 4in Marshall asphalt specimens at the same time in a rotating mold at 64 beats per minute.
Marshall Compactor, Mechanical, Rotating Base, 6in Molds compacts a Marshall specimen into a rotating 6in mold at 64 beats per minute.