Checking density while compacting

1. A compaction system, comprising:

a first and second array of compaction elements supported by an underside of a motorized vehicle adapted to traverse a degraded surface;

a plurality of pavement degradation elements supported by the underside that rotate about an axis substantially normal to the degraded surface;

a sensor assembly supported by the motorized vehicle, disposed intermediate the first and second array of compaction elements, and in electrical communication with a controller;

the sensor assembly also being adapted to sense a characteristic of an at least partially compacted surface formed after the first array of compacting elements applies a first compaction pressure to the degraded surface;

the controller being in electrical communication with the second array of compaction elements and comprising an input field for a second compaction pressure;

wherein the sensor assembly is adapted to input the second compaction pressure into the field and the controller is adapted to adjust the second array of compaction elements to apply the second compaction pressure to the at least partially compacted surface.

2. The system of claim 1 , wherein the compacting elements are tampers, and/or plates.

3. The system of claim 1 , wherein the sensor assembly is part of a closed loop system.

4. The method of claim 1 , wherein the sensor assembly and first and second row of compaction elements are in communication with a controller.

5. The system of claim 1 , wherein the sensor assembly further comprises density sensors, pressure sensors, position sensors, compressive strength sensor, porosity sensor, pH sensor, electric resistively sensor, inclination sensor, nuclear sensor, acoustic sensor, velocity sensor, moisture sensor, capacitance sensor, and combinations thereof.

6. The system of claim 1 , wherein the controller comprises a PC, a microprocessor, a microcontroller, analog circuitry, programmable logic, and/or combinations thereof.

7. The system of claim 1 , wherein the controller further comprises electronic components selected from the group consisting of analog filters, digital filters, modems, data input ports, data output ports, power supply, batteryies, memory, wireless transceivers, digital/optical converters, optical/digital converters, analog to digital converters (ADC), digital to analog converters (DAC), modulators, demodulators, clocks, amplifiers, and combinations thereof.

8. The system of claim 1 , wherein the determined characteristic of the at least partially compacted surface is density.

9. The system of claim 1 , wherein the sensor assembly is adapted for stationary placement while the motorized vehicle traverses the roadway.

10. The system of claim 1 , wherein the sensor assembly is flexibly coupled to the motorized vehicle.

11. The system of claim 1 , wherein the sensor assembly comprises an actuating element selected from the group consisting of hydraulic actuators, a rack and pinion gear, a smart material actuator, an electric actuator or combinations thereof.

12. The system of claim 1 , wherein the sensor assembly is movable with respect to the rest of the vehicle longitudinally along the axis of the vehicle or transversely normal to the axis, or combinations thereof.

13. The system of claim 1 , wherein the sensor assembly is pivotable.

14. The system of claim 1 , wherein the sensor assembly comprises electronic components selected from the group consisting of analog filters, digital filters, modems, data input ports, data output ports, power supply, batteryies, memory, wireless transceivers, digital/optical converters, optical/digital converters, analog to digital converters (ADC), digital to analog converters (DAC), modulators, demodulators, clocks, amplifiers, processors, and combinations thereof.