Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Nondestructive Device for Measuring the Thickness of Concrete Pavement
In research project 0-4172 'Development of a Thickness Measurement Device for Steel Reinforced Concrete Pavement' provided a rudimentary radar system that was able to measure concrete pavement thickness, for pavement without steel reinforcement, up to 18 inches. In this project, the GPR system developed in project 0-4172 is further improved to measure concrete thickness with steel reinforcement. Prototype GPR system was manufactured and an efficient thickness computation algorithm is implemented. The developed GPR thickness measurement system was both lab and field-tested. GPR system is mounted on a pushcart for easy operation. There are two display screens mounted on the GPR: one displays the GPR traces in colour map format and the other displays thickness and distance in text format. Field tests were done on the construction site of US Highway 59 south in Sugar Land area. Field-tested results showed that the GPR is able to measure steel reinforced concrete up to 16 inches with an average error of 2%. In the mean time, the location and diameter of the steel rebars can be obtained. This system also measures the dielectric constant of the concrete automatically. The dielectric constant may be useful in estimating concrete maturity.
Nondestructive Device for Measuring the Thickness of Concrete Pavement
In research project 0-4172 'Development of a Thickness Measurement Device for Steel Reinforced Concrete Pavement' provided a rudimentary radar system that was able to measure concrete pavement thickness, for pavement without steel reinforcement, up to 18 inches. In this project, the GPR system developed in project 0-4172 is further improved to measure concrete thickness with steel reinforcement. Prototype GPR system was manufactured and an efficient thickness computation algorithm is implemented. The developed GPR thickness measurement system was both lab and field-tested. GPR system is mounted on a pushcart for easy operation. There are two display screens mounted on the GPR: one displays the GPR traces in colour map format and the other displays thickness and distance in text format. Field tests were done on the construction site of US Highway 59 south in Sugar Land area. Field-tested results showed that the GPR is able to measure steel reinforced concrete up to 16 inches with an average error of 2%. In the mean time, the location and diameter of the steel rebars can be obtained. This system also measures the dielectric constant of the concrete automatically. The dielectric constant may be useful in estimating concrete maturity.
Nondestructive Device for Measuring the Thickness of Concrete Pavement
2002
48 pages
Report
Keine Angabe
Englisch
Highway Engineering , Construction Equipment, Materials, & Supplies , Nondestructive Testing , Concrete , Pavements , Nondestructive testing , Radar , Measurement , Development , Algorithms , Dielectric constants , Pulse generator , Weak signal extraction , TEM horn antenna , Research project , Ground penetrating radar(GPR) , GPR(Ground penetrating radar)
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