Surface vibration compactor for highway geotechnical engineering

Surface vibration compactor for highway geotechnical engineeringFor the determination of the maximum dry density of non cohesive free draining soil, the curve shaped test curve of the compaction test method shows multiple peaks or no significant peaks, indicating that this method is no longer the most suitable experimental method for this type of soil, and the compaction method determinesThe 'maximum dry density' is often lower than the results of vibration compaction tests,It is stipulated that the surface vibration compactor method should be used for highly permeable soil. our countryMinistry of Water ResourcesThe experimental research has added this method and vibration table method as the basic experimental methods for determining the maximum dry density of non cohesive coarse-grained soil and giant grained soil. The surface vibrator method is similar to the vibration compaction working condition,Easy to operate,The pattern is prone to separation during the vibration compaction process, therefore,GB/T50123-2019It is recommended to prioritize the use of surface vibration compactor method, and this method can also be used for component work such as coarse soil triaxial test, permeability test, concrete material test, and base material test

1Surface vibration compactor for highway geotechnical engineering Technical specifications

1Power supply voltage:380V

2Motor power:0.75-2.2KW

3vibration frequency4060HZ

4Excitation force:4.2KN

5The static pressure exerted by the ramming plate on the surface of the pattern:14Kpaabove

Test bucket specification: one steel large bucket, inner diameter300mm

IIISurface vibration compactor for highway geotechnical engineeringVibration compaction mechanism

The vibration compaction plate is vertically compacted on the surface of the pattern and propagated from top to bottom. After the particles are cut and crushed, their positions are rearranged and moved to the corresponding geotechnical test specificationsThe most stable position under quasi conditions.

4Surface vibration compactor for highway geotechnical engineeringExperimental steps

1Install a suitable test bucket（According to the standard table of geotechnical testing methods for highways:125.2.1）Tighten the test bucket and take an appropriate amount of soil sample (according to the operating procedures), using the prescribed toolsAccording to the standard table of geotechnical testing methods for highways:125.2.1）Load into the test bucket and roughly scrape the surface of the sample flat

2Confirm that the three-phase power supply is well connected and the power indicator light on the controller panel is on

3Press on the controllerThe "up", "stop", and "down" buttons allow the vibration motor and counterweight components to move freely

4When the up switch is pressed and the vibrator instead descends or when the down switch is pressed and the vibrator instead ascends, the power cord should be reversed, otherwise the up and down travel switches will not work and it is easy to damage the machine

5as followsThe "descent" button drives the vibrating plate, ramming plate, and ramming plate to descend with the large sliding sleeve (as shown in the diagram of the surface vibration compactor host). When the ramming plate comes into contact with loose soil samples,15~25mmPress the 'stop' button once, and the large sliding sleeve will stop descending

6Set the timer on the controller and set the time to6Minutes, (i.e. the black toggle switch is in the middle position, the dial number is)060）

7pressVibration "switch, the vibrator starts to vibrate, the timer displays the vibration time, until6The vibrating plate will automatically stop after minutes