MARSHALL MIX DESIGN PROJECT. ASTM D1559 has standardized the Marshall Test procedures. MARSHALL APPARATUS (ASTM D 1559 - 89). Marshall Mix design procedures are used. 76% of the states in the United States according to a survey conducted in 1984. The equipment specified in the Marshall procedure. (ASTM D1559) consists of a 100 mm (4-inch) diameter compaction mould which is intended for mixtures containing aggregate up to 25.4.

Introduction The new MULTISPEED tester is the ideal solution for Road testing laboratory. The 50 kN capacity and the fully variable test speed of 0.2 to 51 mm/min make it possible to perform not only the CBR and Marshall tests, but many other applications as for instance Indirect Tensile test, Quick Triaxial tests, Unconfined and Uniaxial soil testing and, in general, all test to be performed under displacement control. The machine can be equipped with analogical or digital load/displacement measurement systems as well as with the specific accessories, to suit either the field or central laboratory requirement.

Description The MULTISPEED tester feature a rigid two column structure with upper cross beam which can be set at various height. The load jack, DC motor and controls are housed in a specially designed base cabinet. When fit in the digital mode, test data are acquired and processed by the Digimax or by other similar instruments. One of the main features of the new MULTISPEED is the control of test speed which is first easily set and then shown on the display. Furthermore, the test stroke can be set at the beginning of the test with automatic stop, avoiding to overload the machine and the specimen, thus assuring the operator safety. Spolszczenie Kane And Abel. This important feature also permit to perform the speed calibration of the machine by micrometric manual adjustment by the operator. The display also show the travel direction of lower platen.

The front panel is also fitted with an emergency button and two operating led: machine switched on and travel direction. Introduction: The new automatic MULTISPEED 34-V1172 is a versatile stand-alone machine; an ideal solution for road testing laboratories and generally for any test that requires displacement/speed control. The 50kN capacity and fully variable speed of 0.05 to 51 mm/min make it possible to perform not only CBR and Marshall tests, but also many other applications such as indirect tensile, quick undrained triaxial and unconfined/uniaxial soil tests.

Description: The MULTISPEED tester features a rigid two-column structure with an upper crossbeam which can be set at various heights. The load jack, DC motor and controls are housed in an ergonomic cabinet. Automatic control of the test speed/travel is ensured by the microprocessor.

Prior to the test, the operator can impose travel limits for automatically ending the test. No external transducer is required for displacement measurement. The firmware allows performance of transducer calibrations and setting of up to 10 test profiles, saving data onboard. A real-time test graph and transducer data are displayed on the touchscreen.

The machine has built-in data acquisition with four channels dedicated to two strain gauge load cells and two potentiometric linear transducers; one of each can be used during the test. An important feature is provided by the processing unit that controls the speed in a closed-loop mode, avoiding speed calibrations and tension fluctuation effects. The user-interface is a large touchscreen graphic display supplied with a stylus pen. The front panel is fitted with an emergency button for prompt stopping of the machine. Test data can be stored on a USB pen drive or downloaded through a LAN communication port in Controls, txt or ASCII format.

All the accessories have to be ordered separately. Used to condition in water the Marshall (60±1°C) and other asphalt specimens (e.g. Tar specimens at 37.8±1°C). The water baths are available in two versions: 30 and 50 liters capacity.

Digital thermoregulator and temperature display, internal and external outer case in stainless steel. Complete with perforated base shelf and cover. Also available model with circulating system and model fit with cooling unit to satisfy EN 12697-23 requiring a temperature range starting from 5°C. See model 76-B0066/B and 76-B0067/B #circulating-water-baths # and 65-D1409/A, #circulating-water-bath-with-cooler-unit #.

Take the sample as mentioned above, and heated to a temperature of 175 0 to 190 0C. The compaction mould assembly and hammer are cleaned and kept pre-heated to a temperature of 100 0C to 145 0C. The bitumen is heated to temperature of 121 0 to 138 0C and the required quantity of first trial percentage of bitumen (say, 3.5% by weight of mineral aggregates) is added to the heated aggregate and thoroughly mixed using a mechanical mixer or by hand mixing with trowel. The mixing temperature may be 153 0 to 160 0C. The mix is placed in a mould and compacted by hammer, with 75 blows on either side (for light compaction it is 50 blows). The compaction temperature may be 138 0 to 149 0C. The compacted specimen should have a thickness of 63.5 +/- 3.0mm.

Three specimens should be prepared at each trial bitumen content, which may be varied at 0.5 percent increments up to about 7.5 or 8.0 percent. Marshall Stability and Flow values: The specimens to be tested are kept immersed under water in a thermostatically controlled water bath maintained at 60 0 +/- 1 0C for 30 to 40 minutes. Meat Beat Manifesto Satyricon Rar File here. The specimen are taken out one by one, placed in the Marshall test head and the Marshall Stability value (maximum load carried in kg. Before failure) and the flow value (the deformation the specimen undergoes during loading up to the maximum load in 0.25mm units) are noted. The corrected Marshall stability value of each specimen is determined by applying the appropriate correction factor.