About Marshall Stability Test Apparatus
Specification:
Marshall Stability Test Apparatus is used by road constructors, contractors, engineers, testing laboratories and other industries to test the stability of bituminous samples.
Marshall Stability Test Apparatus consists of:
- Robust construction
- 50KN capacity
- Rate of travel 50.8mm/min
- Safety cut-off switch
It consists of body housing, a geared screw jack and motor drive mechanism suitable for operation on 230 V, 50Hz, Single Phase, A.C. supply.
ZI 4022-A : MARSHALL LOAD FRAME 1 No.
ZI 4022-B : Breaking Head Stability Mould, with a dial gauge ( having 25mm travel and 0.01mm least count), for flow measurement 1 No.
ZI 4022-C : Compaction Mould, Steel cylindrical 3 Nos.
ZI 4022-D : Base Plate 3 Nos.
ZI 4022-E : Extension Collar 3 Nos.
ZI 4022-F : Compaction Pedestal, Manual Operation, Comprising a steel plate capped on a wooden post. A Mould Clamp is fitted to the top of the plate . 1 No.
ZI 4022-G : Compaction Hammer, satisfies BS 598. The hammer has a 4535 g sliding weight with a free fall of 457 mm 2 Nos.
ZI 4022-H : Load Transfer Bar 1 No.
ZI 4022-I : Paper Discs, Non absorbent, 11 cm diameter pack of 100 No. 1 Pkt.
Advanced Electronic Measurement SystemThe apparatus uses an electronic load cell and digital displacement transducer, providing accurate and reliable measurement for both stability and flow values. Readings are displayed on a digital indicator, ensuring clear and precise data output for laboratory analysis.
Durable Construction & SafetyFabricated from high-grade steel with a powder-coated finish, the Marshall Stability Test Apparatus is built for long service life. Overload protection safeguards both the equipment and the operator, while the sturdy frame supports safe, repeatable testing.
Versatile & Standards-CompliantThis device is tailored for laboratory use in civil engineering, suitable for single or multiple specimen testing. It meets major international standards (ASTM D6927, BS 598, IS 1208) and offers optional PC connectivity, making it a versatile and compliant choice for testing laboratories.
FAQ's of Marshall Stability Test Apparatus:
Q: How does the Marshall Stability Test Apparatus measure stability and flow?
A: The apparatus utilizes an electronic load cell for measuring stability (up to 50 kN) and a displacement transducer with digital output for flow measurement, ensuring instant and highly accurate results displayed digitally.
Q: What specimen sizes are compatible with this apparatus?
A: It is designed for specimen molds with a diameter of 101.6 mm and a height of 63.5 mm, conforming to standard requirements specified in ASTM D6927.
Q: When should the device be re-calibrated?
A: Calibration should be performed annually or according to your laboratory's quality assurance protocols. Each unit is supplied with a calibration certificate for traceability upon delivery.
Q: Where is the ideal environment to operate the Marshall Stability Test Apparatus?
A: The machine is intended for use indoors under standard laboratory conditions. While ambient humidity and temperature are sufficient, a separate water bath can be used to maintain 60C as required for specific tests.
Q: What is the process for conducting a Marshall stability and flow test using this equipment?
A: The test involves placing a pre-heated specimen in the mold holder, applying load at 50 mm/min using the digital/manual mode, and recording stability and flow values via the electronic sensors until automatic cutoff or manual stop.
Q: What are the benefits of the apparatus's overload protection feature?
A: Overload protection prevents damage to both the machine and test specimens during operation, enhancing safety and extending the service life of the equipment.
Q: How does the PC interface enhance usage and data management?
A: An optional PC interface allows for seamless data transfer and advanced result analysis, supporting efficient workflow and digital record-keeping in modern laboratory environments.