JPH0815109A - Spinning and shearing compaction device for material and method of compaction - Google Patents

Abstract

PURPOSE: To provide a method and device for revolutional shearing binding of a material, wherein a revolutional shearing compression is applied to an experimental sample of the material. CONSTITUTION: A method and device for revolutional shearing binding work in such an arrangement, that a sample 94 of a material concerned is placed in a cylindrical mold 72 having a swing plate 78. When the mold 72 is revolved, the sample 94 is compressed by a piston 20. The revolutions are generated in such a way that the mold 72 is inclined, the swing plate 78 is held by rollers 40, 42, 44, 46 rotating around the mold 72, and the inclination angle is controlled to the selected value while vibrational revolution is given. The selected inclination angle is controlled precisely at all times, and the mold 72 is hindered from dislocation from the sample 94 and also touching the bottom of the device. The mold 72 is made rotatable, and the height of the sample 94, revolving angle, and the moment of revolution are measured and recorded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary shear compaction device and a compaction method for a material, and more particularly to a rotary shear compaction and compaction device and a compaction method for a material. The present invention also provides materials, such as asphalt, bitumen, soil, and other experimental samples, which are rotationally compacted and compacted, and the properties of the material sample are used to characterize the material over time. The present invention relates to a rotational shear compaction device and a compaction method for approximating the above-mentioned material.

[0002]

2. Description of the Related Art In structures through which vehicles pass, such as roads, parking lots, runways, etc., materials of untightened construction,
For example, asphalt and soil are compacted to give them greater strength and wear. These non-compacted materials can be more effectively compacted when lateral shear is applied along the vertical compaction force. In the construction of vehicle-passing structures, kneading is accomplished, for example, using sheep foot rollers or by rolling, for example by using a plurality of wheels aligned on a common axis to achieve a combination of normal force and lateral shear.

When the structure through which the vehicle passes is compacted and put into use, the structure is somewhat flexible. When the vehicle passes over the structure, the structure flexes and when the vehicle wheels pass, it springs up. This deflection is not pure compression, but is caused by a lateral shear component due to internal particles that move under the load of the wheel and return after the wheel has passed.

For testing, it is necessary to obtain an experimental sample of the compacted material and to approximate the required structural specifications to the structural specifications of the vehicle. Such an experimental sample must demonstrate the conditions of the structural material through which the vehicle actually travels. An apparatus for making such samples should be able to not only apply both compressive forces and transverse shear, but change both.

[0005]

Devices for compacting experimental samples are known. In some such known devices, only pure compressive force is applied to the sample, for example in a cylinder. With such a device, no lateral shear is applied to the sample, so that it is not possible to make a sample that represents the conditions of the material through which the vehicle actually travels.

Another of the known devices has a pair of opposed plungers for compressing the material in a removable cylindrical mold. The material is placed in a mold which is placed in a mold chuck which causes the mold chuck to rotate and vibrate about the plunger axis. This is accomplished by tilting the mold chuck relative to the plunger axis and rotating the mold chuck under the application of axial compressive forces. Tilting and swirling the mold causes a rasping motion, which exerts a lateral shear force on the sample and a compressive force on the sample at the same time.

In these devices, when the mold is placed in the mold chuck and the mold chuck is placed in the compaction device, the mold chuck and the mold are prevented from rotating while rotating. This results in a twisting force against the natural seating direction of the sample. The effect of this twisting force adds an unknown parameter to the sample processing and its effect cannot be determined.

However, compaction devices are known which do not require a mold chuck and allow the mold to rotate with the sample. In such an apparatus, the mold has a scouring plate provided inclined between the rollers. The roller rolls around the mold while the piston compresses the sample, creating an oscillating, swirling motion. Since the mold is rotatable, no twisting force is applied to the sample. However, in this device, the mold is tilted at a constant angle during the turning, and the tilt angle cannot be changed while the turning is performed. Furthermore, it is not only possible to measure the force required to tilt the mold (the moment of rotation) while the mold is rotating, but it is also possible to measure the change in the moment of rotation when the mold rotates. It cannot be measured. Furthermore, in the known device,
During the turning, it is not possible to keep the turning moment constant while changing the tilt angle of the mold, nor is it possible to measure the tilt angle change.

[0009] Therefore, there is a need for a rotary shear compaction device and compaction method for materials that overcomes the limitations of the previously known devices. The material rotary shear compaction apparatus and compaction method of the present invention is an improvement overcoming the limitations of the prior art apparatus described above.

It is an object of the present invention to provide a device for the rotational shear compaction of materials and a method for compaction for the rotational shear compaction of experimental samples of material.

Another object of the present invention is a rotary shear compaction device and compactor for a material capable of exerting a controllable compressive force and a controllable transverse shear force on a sample of material without exerting a twisting force on the sample. There is a way to harden it.

Another object of the present invention is to provide a rotary shear compaction device and compaction method of a material which can change and measure the tilt angle without using a mold chuck.

Another object of the invention is that when the mold containing the material sample is swung, it is rotatable in the natural sheeting direction of the material sample, while the mold is held at a constant tilt and the moment of rotation is In order to obtain a rotary shear compaction device and a compaction method for the material to be measured.

Another object of the invention is a rotary shear compaction device and compaction of a material in which the mold is rotatable while the moment of rotation is kept constant during the rotation and the tilt angle is measured. There is a way to get it.

Another object of the invention is to obtain a device for the rotary shear compaction of a material and a method for compacting it, which makes it possible to make experimental samples, which represents the material actually used.

[0016]

SUMMARY OF THE INVENTION A rotary shear compaction device for materials according to the present invention comprises a frame for supporting a fixed compression member and a movable compression member corresponding to the fixed compression member, and a face toward the fixed compression member. A mold having a one-end open mold body for receiving material, including a biasing mechanism for moving the movable compression member and a wobble plate, and associated with the compression member for maintaining the material in the mold. A mechanism for tilting the mold to apply a constant turning moment to the mold, and vibrating to the mold while maintaining the material in the mold in a compressed state; And a mechanism for smoothing the mold by applying the constant turning moment to the mold.

The method of rotary shear compaction of a material according to the present invention comprises the steps of placing a material sample in a mold, inclining the mold at an angle, and rotating the mold while rotating the mold. And a step of applying a constant turning moment to the mold while rotating the mold.

As will be described below, the rotational shear compaction device of the material in the preferred embodiment of the present invention uses a mold that does not require a mold chuck to be provided within the compaction device.
The material slew shear compactor of the present invention has upper and lower moveable rollers for achieving slewing. In the device of the present invention,
A scouring plate coaxial with the mold is provided so that the mold is swung when the scouring plate is inserted into the roller. Since the mold is not installed inside the mold chuck,
The mold is rotatable. The position of the rollers, and thus
The tilt angle of the mold can be precisely controlled and adjusted, and the moment of rotation is measured against other variables. Furthermore, the moment of rotation is held constant, while tilt angle changes are also measured for other variables.

The material rotary shear compaction device and compaction method of the present invention overcomes the limitations of conventional devices and allows samples to be made with precisely known and controllable parameters. And the method can be improved.

[0020]

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, 10 is a compaction device of the present invention, 11 is its frame, and 12 is a base for supporting the frame 11. The frame 11 comprises a bottom component 13, a side component 14, and a top component 15. A vertical cylinder 16 including an upper tilting piston 18 and a lower main piston 20 by the top component 15.
And the pistons are independently movable in opposite directions in the cylinder. A turret 22 for controlling the height of movement of the upward tilting piston 18 is provided on the frame 11. Further, various instruments 24 and a control member 26 are provided on the frame 11.

As shown in FIG. 2, a fixed substrate 28 is provided in the hole of the annular turntable 30, both of which are supported by the bottom portion 13 shown in FIG. Turntable 3
The rotation speed of 0 can be controlled to make the rotation speed different.

The turntable 30 is provided with a main vertical track 32 and a sub-vertical track 34 having a C-shaped cross section at positions facing each other. An elongated main slide 36 having a rectangular cross section is provided in the main vertical track 32 so as to be vertically slidable and immovable in the other direction. In the sub-vertical track 34, an elongated sub-slide 38 of rectangular cross section
To provide.

The sub-slide 38 can slide vertically upward and downward, but cannot slide in other directions.
Provided in the sub-vertical track 34.

Inside the main slide 36, upper and lower main rollers 40, 42 are arranged. Inside the sub slide 38, upper and lower sub rollers 44 and 46 are arranged. An outer ring 48 concentric with the cylinder 16 is arranged between the main slide 36 and the sub slide 38. This outer ring 48, which is concentric with the cylinder 16, is connected to the upper end of the main slide 36 via a main slide ball joint 50 and to the upper end of the auxiliary slide 38 via an auxiliary slide ball joint 51.

An annular intermediate ring 52 is concentrically arranged within the outer ring 48. The outer ring 48 is pivotally supported on the intermediate ring 52 by a pair of pivot pins 54 as shown in FIG. An annular lower track 58 of C-shaped cross section is located in the annular intermediate ring 52. Three lower track cam followers 56 are mounted inside the intermediate ring 52, and the intermediate ring 52 is rotatably supported by the lower track 58. An assembly opening 59 in the vertical wall of the lower track 58 is for incorporating the lower track cam follower 56 into the intermediate ring 52 within the lower track 58.

Lower track 58 as shown in detail in FIG.
Are arranged concentrically around the vertical cylinder 16. The lower track cam follower 56 is located in the lower track 58 such that the intermediate ring 52 is positioned in the horizontal plane by the lower track 58 and is rotatable about the axis of the vertical cylinder 16. Connect the pivot pin 54 to the intermediate ring 5
2, the pivot point of the outer ring 48 is always located in the same horizontal plane as the intermediate ring 52.
Similarly, it becomes possible to rotate about the axis of the vertical cylinder 16 in the same horizontal plane as the intermediate ring 52.

As shown in FIG. 2, an annular upper track 62 having a C-shaped cross section is provided concentrically with the cylinder 16 and vertically movable. At the upper end of the main slide 36 on the main slide ball joint 50, an upper track cam follower 60 that extends inward and is inserted into an upper track 62 is provided. The upper track 62 is supported by a tilting piston bridge 64 on the upper tilting piston 18. As shown in FIG. 1, a linear transducer 65 is provided on the tilting piston bridge 64 to measure the height change of the upper tilting piston 18. The height of the upper track 62 changes as the height of the upper tilt piston 18 changes. Due to this height change, the countable tilt angle changes. Therefore, the change in tilt angle is measured using the transducer 65.

A force measuring mechanism 66 is provided between the tilt piston 18 and the tilt piston bridge 64 to measure the force required to maintain the selected tilt angle. This force corresponds to a certain distance from the center of rotation and becomes the moment of rotation. The greater the turning moment, the greater the load on the tilt piston 18.

A diaphragm 67 in the cylinder 16 separates the tilting piston 18 from the lower main piston 20 so that they can be individually controlled. The main piston head 68 is located at the lower end of the lower main piston 20 and forms the piston surface 70. Another linear transducer (not shown) is located within the lower main piston 20 to allow the relative position of the lower main piston 20 to be measured and the change in height of the sample during compression.

A mold 72 having a cylindrical mold body 74 having a hole 76 having a diameter larger than that of the piston surface 70 is provided.
The main piston head 68 has a shape matching the inside of the hole 76,
It allows the material to be effectively compressed and allows the mold 72 to rotate about the axis of the cylinder 16. Since the main piston head 68 is inserted into the hole 76 of the mold 72, lateral movement of the mold 72 can be prevented.

At an intermediate height of the mold body 74,
A rocking plate 78 arranged coaxially with the hole 76 is provided in a horizontal plane that extends radially outward from the hole and is perpendicular to the axis of the hole 76. The mold 72 is inserted into the compression device 10, and the outer edge of the rocking plate 78 has one end at the upper main roller 40 and the lower main roller 42.
It is fitted between the upper sub roller 44 and the lower sub roller 46 at the other end. Upper and lower rollers 4
The gaps between 0, 42, 44, 46 and the oscillating plate 78 are such that the rollers are rotatable around the edge of the oscillating plate 78 while maintaining the mold 72 at the selected tilt angle. Each roller is provided with a crown tooth surface or a curved surface so as to approach only when the oscillating plate 78 is horizontally or gently inclined, but the oscillating plate 78 can be largely inclined without being restrained.

A bottom mold plate 80 having a bottom plate surface 82 is provided with a hole 76 in the mold 72 opposite the main piston head 68.
If it can be inserted inside, close it. The bottom mold plate 80 is movably mounted on the fixed substrate 28 within the mold 72 and is shaped to fit closely within the holes 76, resulting in effective compression of the material and the cylinder 16 The mold 72 is allowed to incline with respect to the axis.

As shown in FIG. 1, the turret 22 has a disc 84 which is rotatably inserted into a bracket 86 on the top component 15. The disk 84 is provided with a plurality of setscrews 88 extending in the radial direction from the disk 84, the length of which sequentially increases. The turret 22 allows it to be positioned by a ball stop 90 provided in a bracket 86 when one of the set screws 88 is extended downwards. The height of the upper track 62 is limited by abutting a set screw 88 extending downwardly from the turret 22. A rigid tab 92 extends inwardly from the upper track 62 for contacting a set screw 88 extending downwardly from the turret 22 and for forming a gap between the upper track 62 and another set screw 88 on the turret 22. The height of the upper track 62 can be decreased or increased by pivoting the turret 22 to a longer or shorter set screw 88 in a downwardly extending position, and the downwardly extending set screw 88 is rigid. Adjust the upward tilt piston 18 until it contacts the tab 92. The disc 84 is marked to indicate which set screw position will cause the mold 72 to be inclined.

In operation of the apparatus of the present invention, a mold 7 having a bottom mold plate 80 to obtain experimental samples.
Fill the two holes with a known amount of material sample 94. Then, as shown in FIG. 2, the upper and lower primary and secondary rollers 4
The mold 72 is inserted into the compression device 10 by sliding the edge of the rocking plate 78 between 0, 42, 44 and 46. At this time, the axis of the hole 76 is perpendicular to the axis of the cylinder 16. Next main piston head 68
Urging the lower main piston 20 in the cylinder 16 to extend into the hole 76 of the mold 72. In the preferred embodiment, the lower main piston 20 and the upper tilting piston 18 are driven by a fluid system (not shown), but may be any other.

The main piston head 68 has a piston surface 70.
Is extended until it contacts the material sample 94, and the desired pressure is continuously applied to the material sample 94. The edges of the main piston head 68 allow the mold 72 to move laterally, while the bottom mold plate 80 is allowed to move laterally within the holes 76 of the mold 72. Bottom mold plate 8
An oil film is formed between 0 and the fixed substrate 28.

The turret 22 is adjusted to a desired position so that the mold 72 has a desired inclination, and the inclined piston 18
Energize. When the tilt piston 18 is raised, the tilt piston bridge 64, the upper track 62, and the main slide 36 are raised to the desired height. The turret 22 prevents the upper track 62 from rising above a predetermined height and stops the upward movement of the tilting piston 18. As the main slide 36 rises, the main slide ball joint 50 also rises causing the outer ring 48 to tilt around the pivot pin 54. By this tilting, the sub slide ball joint 51
Is lowered, and the auxiliary slide 38 is lowered. Since the main slide rollers 40 and 42 are at a predetermined position higher than the sub slide rollers 44 and 46, the mold 72 is tilted at a predetermined angle at a predetermined height by the rocking plate 78 interposed therebetween. It

In the preferred embodiment, the outer ring 4
The eight pivot pins 54 are arranged at positions opposite to the center of the cylinder 16. As a result, there is a one-to-one contrast, and if the main slide 36 rises for a certain distance, the sub slide 38 falls for the same distance, and the force to be applied as the moment of rotation can be simplified, and the rising force on one side Is equal to the descent force on the side of. In another embodiment of the invention (not shown), the pivot point of the outer ring 48 is located along the outer circumference of the outer ring 48 and away from the centerline of the cylinder 16.
In this way, the rising / falling ratio between the main slide 36 and the sub slide 38 can be made different.

After tilting the mold 72 to a desired angle, the turntable 30 is rotated at a desired speed. When the turntable 30 rotates around the fixed substrate 28, the main vertical track 32 and the sub vertical track 34 fixed to the turntable 30 rotate around the mold 72 together with the main slide 36 and the sub slide 38. Primary and secondary slide 3
When 6, 38 rotate around the mold 72, the lower main roller 42 moves up one side of the rocking plate 78, while the upper sub roller 44 simultaneously pushes down the other side of the rocking plate 78, resulting in
The mold 72 undergoes a vibrating motion and a material sample 94
Lateral shear force is applied to the. Upper main roller 40
And the lower secondary roller 46 prevents the mold 72 from deviating from the desired tilt angle. Since the mold 72 is always held by the roller, the mold 72 does not shift from the sample or come into contact with the fixed substrate 28. The tilt angle can be controlled to a known value and can be kept constant during the swiveling process, but the mold is rotatable in the sheeting direction of the material sample 94.

When the material sample 94 is compressed and swung, it is desired that the slope be horizontal. Since the mold is held at the desired tilt angle, a force known as the moment of rotation is created, which increases the load on the tilt mechanism. The force measurement mechanism 66 is used to measure and record the change in force as a function of other variables such as time, number of turns and the like.

In another embodiment of the invention, the moment of rotation is held constant for some testing purposes and the mold 72 is level when the material sample 94 is compressed. By maintaining the pressure by the tilting piston 18 constant, the moment of rotation is maintained constant, while the tilting piston 18 floats when the mold 72 is rotated. When the material sample 94 is compressed and swung, the mold 72 is horizontal and the tilt angle is zero. The change in tilt angle is measured by the transducer 65 and recorded as a function of time, number of turns, and other variables.

The mold 72 is provided in the compression device 10 as described above to provide a constant turning moment and the cylinder 16 is biased to apply the desired pressure. Inclined piston 1
8 is raised by a constant fluid pressure and the mold 72 is tilted to some measurable angle. Next, the turntable 30 is rotated so that the pressure by the tilting piston 18 is kept constant and a constant turning moment is applied to the mold 72. When the material sample 94 is compressed by successive turns, the tilt angle decreases and the mold 72 becomes vertical, while this tilt angle change is recorded by the transducer 65.

After compression of the material sample 94, if it is desired to make the sample square, the tilting piston 18 is lowered until the primary slide 36 and secondary slide 38 are at the same height. Turntable 30 during this square operation
Is rotated, and the load from the main piston head 68 is continuously applied for several rotations thereafter.

The rotary shear compaction device of the material according to the invention is not limited to the preferred embodiment described above, but can be variously modified within the scope of the invention. For example, in the preferred embodiment described above, the bottom mold plate 80 is made movable on the surface of the fixed substrate 28, and the main piston head 68 is fixed to the lower main piston 20, but the following three combinations are possible.

(1) The bottom mold plate 80 is attached to the fixed substrate 28.
The main piston head 68 is attached to the lower main piston 20 so that the main piston head 68 is rotatable around the axis of the lower main piston 20.

(2) The bottom mold plate 80 is attached to the fixed substrate 28.
Fixed on top, main piston head 68 lower main piston 2
If it can move freely on the 0 end surface,

(3) The bottom mold plate 80 is attached to the fixed substrate 28.
Fixed on top, main piston head 68 lower main piston 2
It is rotatable about an axis of 0 and movable on the end face of the lower main piston.

The lower main piston 20 and the fixed base plate 28 can exchange their upper and lower positions, or both positions can be set.

As another modification, the size of the cylinder, the specific type of drive mechanism, the amount of vertical stress, the type, amount and temperature of the main material to be compressed can be variously changed within the scope of the present invention.

[0050]

As described above, according to the present invention, there is a great advantage that it is possible to easily obtain an experimental material sample that is very close to the one in the actual use condition with a very simple structure.

[Brief description of drawings]

FIG. 1 is a front view of a material rotational shear compaction device of the present invention.

2 is an enlarged view of a portion of the apparatus of FIG.

FIG. 3 is a sectional view taken along line 3-3 of FIG. 2;

FIG. 4 is a sectional view taken along line 4-4 of FIG.

[Explanation of symbols]

 10 Compressor 11 Frame 12 Base 13 Bottom Component 14 Side Component 15 Top Component 16 Vertical Cylinder 18 Upward Tilt Piston 20 Lower Main Piston 22 Turret 24 Instrument 26 Control Member 28 Fixed Substrate 30 Turntable 32 Main Vertical Track 34 Secondary Vertical track 36 Main slide 38 Sub slide 40 Upper main roller 42 Lower main roller 44 Upper sub roller 46 Lower sub roller 48 Outer ring 50 Main slide ball joint 51 Sub slide ball joint 52 Intermediate ring 54 Pivot pin 56 Lower track cam follower 58 lower track 59 assembly opening 60 upper track cam follower 62 upper track 64 inclined piston bridge 65 linear transducer 66 force measuring mechanism 67 diaphragm 68 main piston head 70 Piston surface 72 Mold 74 Mold body 76 Hole 78 Swing plate 80 Bottom mold plate 82 Bottom plate surface 84 Disc 86 Bracket 88 Set screw 90 Ball stop 92 Rigid tab 94 Material sample

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Raymond Dee. Alexander Texas 78753 Austin Little Fatima 12311 (72) Inventor Lawrence E. Hult United States Texas 78757 Austin Janny Drive 6119

Claims (15)

[Claims] 1. A fixed compression member, a frame that supports a movable compression member corresponding to the fixed compression member, an urging mechanism for moving the movable compression member toward the fixed compression member, and a swing. A mold having a one-end open mold body for receiving material, including a plate, a mechanism associated with the compression member to maintain the material in the mold, and a tilt of the mold to provide a constant rotation to the mold. A mechanism for applying a kinetic moment, and vibration oscillating the mold, while maintaining the material in the mold in a compressed state, applying the constant kinetic moment to the mold, and allowing the mold to rotate. A rotational shear compaction device for materials, characterized in that it comprises a mechanism for leveling. 2. The device of claim 1 wherein the mechanism for tilting the mold and applying a constant moment of rotation to the mold comprises a fluid cylinder having a movable piston. 3. An apparatus according to claim 1, further comprising a mechanism for measuring a tilt angle of the mold. 4. The turning of material according to claim 1, wherein said mechanism for applying a constant turning moment comprises a fluid cylinder for maintaining the piston at a constant pressure, said piston being movable in said fluid cylinder. Dynamic shear compaction device. 5. An apparatus according to claim 1, further comprising a mechanism for measuring a turning moment. 6. The mechanism for applying oscillating rotation to the mold has a rotatable turntable, to which the elongated main vertical track and subvertical vertical track are fixed, and the main slide is the above-mentioned. 2. A rotational shear compaction device for materials according to claim 1, wherein the device is slidably disposed in the main vertical track and the secondary slide is slidably disposed in the secondary vertical track. 7. The material of claim 6 wherein said slide has a restraining mechanism for receiving a swing plate for imparting rotation to said mold, said restraining mechanism having an edge of said swing plate inserted therein. Twisting shear compaction device. 8. The mechanism for tilting the mold has a main and a secondary slide each including a restraining mechanism for receiving a swing plate of the mold, the restraining mechanism including an edge of the swing plate. 2. The device of claim 1 wherein the mold is inserted around and the mold is maintained at a selected tilt angle. 9. A mechanism for maintaining the mold at a selected angle of inclination pivotally engages one side with the primary slide and pivotally engages the other side with the upper end of the secondary slide. An outer ring having a pivot point between them and an intermediate ring for holding the pivot point at a predetermined height, wherein the intermediate and outer rings are the intermediate ring and the movable compression member. 9. A device as claimed in claim 8 which is movably clamped between lower annular tracks fixed to and is rotatable about said movable compression member. 10. A frame for supporting an annular turntable, a fixed compression member disposed in the annular turntable about which the annular turntable is rotatable, and fixed to the frame so as to extend from the turntable. And a main vertical track having a main slide slidably inside thereof, a sub-vertical track having a sub-slide slidable therein, fixed to the turntable so as to extend from the turntable, and a main vertical track for receiving the material. A mold having a mold main body having a hole, a swing plate provided on the mold main body so as to extend outward therefrom, a movable compression mechanism provided on the frame so as to face the fixed compression member, A material contact mechanism associated with the fixed compression member that can be inserted into the hole of the mold and a rocker plate of the mold. For suppressing the height of the oscillating plate, which is provided on the main slide and the sub-slide, for inserting the edge of the oscillating plate, and the heights of the main and sub-slides. A mechanism for adjusting and maintaining the mold at a selected tilt angle when the mold is placed in the restraining mechanism, wherein rotation of the turntable causes the main and sub-rotations. The slide is rotated around the mold and the restraint mechanism raises one edge of the rocker plate and lowers the other edge of the rocker plate,
As a result, the mold is oscillated and oscillated, the selected tilt angle is maintained, and the mold is rotatably rotated. 11. The device of claim 10, wherein the mechanism for tilting the mold comprises a mechanism for applying a constant turning moment to the mold. 12. The device of claim 11, wherein the mechanism for applying a constant moment of rotation to the mold comprises a fluid cylinder containing a piston maintained at a constant pressure. 13. The mechanism for adjusting the height of the main slide and the sub-slide has an outer ring pivotally connected to the main and the sub-slide, the outer ring being defined by an intermediate ring. Having a pivot point held at a height, the intermediate ring and the outer ring are rotatably sandwiched between the intermediate ring and a lower annular track fixed to the movable compression member to rotate around the cylinder. 11. A rotational shear compaction device for materials according to claim 10 which is movable. 14. Placing a material sample in a mold; tilting the mold at an angle; compressing the sample in the mold while rotating the rotatable mold; and A method for compacting a sample, comprising the step of applying a constant turning moment to the mold while rotating the mold. 15. The method of claim 14 including the step of measuring a tilt angle change of the mold while applying the constant turning moment to the mold.