Methods, systems, and computer program products for determining a property of construction material

Patent metadata

Field	Value
Publication number	US-10928376-B2
Application number	US-201815883596-A
Country	US
Kind code	B2
Filing date	Jan 30, 2018
Priority date	Aug 30, 2005
Publication date	Feb 23, 2021
Grant date	Feb 23, 2021

Abstract

Methods, systems, and computer program products for determining a property of construction material. According to one aspect, a material property gauge operable to determine a property of construction material is disclosed. The gauge may include an electromagnetic sensor operable to measure a response of construction material to an electromagnetic field. Further, the electromagnetic sensor may be operable to produce a signal representing the measured response by the construction material to the electromagnetic field. An acoustic detector may be operable to detect a response of the construction material to the acoustical energy. Further, the acoustic detector may be operable to produce a signal representing the detected response by the construction material to the acoustical energy. A material property calculation function may be configured to calculate a property value associated with the construction material based upon the signals produced by the electromagnetic sensor and the acoustic detector.

First claim

What is claimed is:

1. A material property gauge for determining a property of construction material, the material property gauge comprising:
(a) an electromagnetic sensor operable to measure a response of construction material to an electromagnetic field and operable to produce a signal representing the measured response by the construction material to the electromagnetic field;
(b) a seismic detector operable to detect a response of the construction material to mechanical energy and operable to produce a signal representing the detected response by the construction material to the mechanical energy; and
(c) a material property calculation function configured to calculate a property value associated with the construction material based upon the signals produced by the electromagnetic sensor and the seismic detector.

2. The material property gauge of claim 1 , wherein the construction material comprises a material selected from the group consisting of soil, asphalt, pavement, stone, sub-base material, and sub-grade material, sand, cement and concrete.

3. The material property gauge of claim 1 , wherein the seismic detector is a probe operable to be inserted beneath the surface or in surface contact of the construction material.

4. The material property gauge of claim 1 , further comprising a moisture property gauge, wherein the moisture property gauge is one of an insert-able probe and a surface sensor configured to generate an electromagnetic field in one of a frequency and time domain.

5. The material property gauge of claim 4 , wherein the moisture property gauge is operable to measure at least one of resistivity, reactance, susceptibility, conductivity, phase velocity, energy loss, loss tangent, complex permittivity, an impedance effect, dispersion, capacitance; associated with permittivity and dielectric properties of the construction material.

6. The material property gauge of claim 4 , wherein the moisture property gauge is one of integrated into the material property gauge and located external to the material property gauge.

7. The material property gauge of claim 5 , wherein the one of the insert- able probe and the surface sensor is integrated into the material property gauge or located external to the material property gauge.

8. The material property gauge of claim 7 , wherein signals from the moisture property gauge are communicated to the material property gauge through one or more of a wired connection, wireless connection, and manual keypad entry.

9. The material property gauge of claim 1 , wherein the material property calculation function is configured to determine at least one of a raw density, stiffness, modulus value of the construction material based on the signal produced by the seismic detector.

10. The material property gauge of claim 9 , wherein the material property calculation function is configured to correct at least one of the raw density, stiffness, modulus value of the construction material based on a signal representing a moisture property produced by a moisture property gauge.

11. The material property gauge of claim 1 , wherein the material property calculation function is configured to determine a property correction value based on a signal produced by a moisture property gauge.

12. A method for measuring a property of a sample construction material, the method comprising:
(a) directing a mechanical disturbance into a sample construction material;
(b) detecting the mechanical disturbance from the sample construction material;
(c) producing a signal of the detected disturbance;
(d) determining a moisture property of the sample construction material using an electromagnetic field generator;
(e) producing a signal representing the moisture property; and
(f) calculating a property value associated with the sample construction material based upon the signal representing the detected mechanical disturbance and the signal representing the moisture property.

13. The method of claim 12 , wherein the sample construction material comprises a material selected from a group comprising cement, concrete, soil, asphalt, pavement, stone, sub-base material, and sub-grade material.

14. The method of claim 12 , further comprising:
(g) determining one or more of a permittivity, conductivity, resistivity, and a dielectric constant response of the sample construction material based on the signal representing the moisture property; and
(h) calculating a moisture content of the sample construction material based on one or more of the permittivity, conductivity, resistivity, and dielectric constant response of the sample construction material.

15. The method of claim 12 , further comprising determining at least one of a raw density, modulus and stiffness of the sample construction material based upon the signal representing the detected mechanical disturbance.

16. The method of claim 15 , further comprising adjusting a final value of at least one of the raw density, modulus and stiffness based on a signal representing a moisture property produced by a moisture property gauge.

17. The method of claim 12 , further comprising:
inserting a probe into the sample construction material or contacting a surface sensor with the sample construction material, and
generating an electromagnetic field in one of a frequency and time domain.

18. The method of claim 12 , further comprising communicating signals produced by a moisture property gauge to a material property gauge through one or more of a wired connection, wireless connection, and manual keypad entry.

19. A computer program product comprising computer executable instructions embodied in a non-transitory computer readable medium for performing steps comprising:
(a) receiving a signal representing a mechanical energy detected from a sample construction material and produced by a mechanical source;
(b) determining a moisture property of the sample construction material by an electromagnetic field generator;
(c) producing a signal representing the moisture property; and
(d) calculating a property value associated with the sample construction material based upon the signal representing the mechanical energy detected from the sample construction material and the signal representing the moisture property.

20. The computer program product of claim 19 , wherein the sample construction material comprises a material selected from the group consisting of cement, concrete, soil, asphalt, pavement, stone, sub-base material, and sub-grade material.

21. The computer program product of claim 19 , further comprising:
(e) determining one or more of permittivity, conductivity, a resistivity, and a dielectric constant response of the sample construction material based on the signal representing the moisture property; and
(f) calculating a moisture content of the sample construction material based on the one or more of permittivity, conductivity, a resistivity, and a dielectric constant response of the sample construction material.

22. The computer program product of claim 19 , wherein the property value associated with the sample construction material is related to at least one of a raw or corrected density, raw or corrected modulus, and raw or corrected stiffness value.

23. The computer program product of claim 22 , wherein at least one of the raw density, the raw modulus and the raw stiffness value is corrected by the moisture property.

24. The computer program product of claim 19 ,

Assignees

• Troxler Electronic Lab Inc

Inventors

• Troxler Robert Ernest

Classifications

• G01N19/10

  Measuring moisture content, e.g. by measuring change in length of hygroscopic filament; Hygrometers · CPC title

• G01N23/005

  by using neutrons (G01N23/02 - G01N23/227 take precedence) · CPC title

• G01N27/048

  for determining moisture content of the material · CPC title

• G01N23/203

  Measuring back scattering · CPC title

• G01N2223/1013

  gamma · CPC title