GP8000

Time in GPR has different meanings: Time Window = the maximum recording time shown on the data. This can be used to calculate the depth. Acquisition Time = how long it takes to finish one A-scan measurement with a perfect...

Time in GPR has different meanings: Time Window = the maximum recording time shown on the data. This can be used to calculate the depth. Acquisition Time = how long it takes to finish one A-scan measurement with a perfect electronics instrument for pulsed GPR. However, GPR devices are not able to collect one A-scan in a single pass and, to reduce noise, normally an A-scan is measured multiple times, and then results are averaged together. So the Acquisition Time is longer than the Time Window.

Unlike Pulsed-GPR broadcasting a signal centered around one frequency, resulting in a trade-off of resolution and depth for inspecting, stepped frequency continuous wave (SFCW) has the advantage to broadcast an ultra...

Unlike Pulsed-GPR broadcasting a signal centered around one frequency, resulting in a trade-off of resolution and depth for inspecting, stepped frequency continuous wave (SFCW) has the advantage to broadcast an ultra wide-band range of modulated frequencies. The combination of all frequency response enables detection of objects from shallow to deep depth in one scan.

GPR emits electromagnetic (EM) waves to the subsurface and calculates the time these waves need to travel through the various subsurface material and get back to the GPR receiver. This two-way travel-time, along with a few...

GPR emits electromagnetic (EM) waves to the subsurface and calculates the time these waves need to travel through the various subsurface material and get back to the GPR receiver. This two-way travel-time, along with a few other parameters such as the dielectric, provide the user an estimate of the target depth.

GPR is a very useful tool in a variety of applications. Most popular uses of GPR are the non-destructive testing and mapping of objects inside the concrete, such as rebars, pipes, ducts, and cables. Other applications are...

GPR is a very useful tool in a variety of applications. Most popular uses of GPR are the non-destructive testing and mapping of objects inside the concrete, such as rebars, pipes, ducts, and cables. Other applications are infrastructure assessment (bridge decks, roads), utility location, archaeology, forensics, environmental studies (mapping contaminants), shallow geology and geophysics, mine exploration and safety, transportation (pavement thickness and density, ballast fouling), agriculture, military (UXO), sedimentology, glaciology, quarrying, space exploration.

Both. GPR can be used as a standalone unit if you work on specific applications and you are happy with a limited set of feedback and information. However, it is not a tool for every job you may have onsite. In concrete...

Both. GPR can be used as a standalone unit if you work on specific applications and you are happy with a limited set of feedback and information. However, it is not a tool for every job you may have onsite. In concrete applications, GPR can be used in combination with Ultrasound Tomography (Pundit Array: https://bit.ly/3cBBeTE) and Eddy Current Rebar locators (Profometer: https://bit.ly/39B0QhJ) to get a comprehensive approach.

Proceq GP8800 and GP8100 GPRs have wheels and a certain clearance from the surface. If the wheels can move over the surface the GPR can collect data. Moving over conductive materials, e.g., aluminum, copper etc. can limit...

Proceq GP8800 and GP8100 GPRs have wheels and a certain clearance from the surface. If the wheels can move over the surface the GPR can collect data. Moving over conductive materials, e.g., aluminum, copper etc. can limit or even zero the depth penetration of your antenna.

No. Data collection on GPR systems (GPx and GSx) is triggered by wheel movement. If you do not move the radar, then no data collection is happening. The wheel is acting also as an odometer, giving local coordinates on the...

No. Data collection on GPR systems (GPx and GSx) is triggered by wheel movement. If you do not move the radar, then no data collection is happening. The wheel is acting also as an odometer, giving local coordinates on the x-axis direction.

GPR is not the ideal tool to calculate the rebar size. There is a technique where you can get approximate values for the rebar size by measuring the depth to the rebar from both in line and cross line data and the...

GPR is not the ideal tool to calculate the rebar size. There is a technique where you can get approximate values for the rebar size by measuring the depth to the rebar from both in line and cross line data and the difference will give an approximate diameter. There are more accurate and easier instruments to detect the rebar size and cover such as the Profometer PM8000 which can be used in combination with GPR for a holistic approach to your concrete investigations.

Rebar locators (Profometer: https://bit.ly/39B0QhJ) are the most economical and accurate solutions to map the first layer of rebars in concrete. They accurately measure the rebar cover independently of concrete properties...

Rebar locators (Profometer: https://bit.ly/39B0QhJ) are the most economical and accurate solutions to map the first layer of rebars in concrete. They accurately measure the rebar cover independently of concrete properties (dielectric). GPR can detect metallic and non-metallic targets that are deeper inside the concrete and can also detect larger voids inside the concrete, plastic conduits, and other non-metallic targets, as well as find the slab thickness and concrete bottom. If you already have a rebar locator, adding a GPR will give you complementary capabilities to deliver best in class results to your customers.

Air inside the concrete results in a partial reflection of the GPR signal, which allows you to detect larger voids. Thin delamination and small voids only give a small reflection and can typically be visualized using GPR....

Air inside the concrete results in a partial reflection of the GPR signal, which allows you to detect larger voids. Thin delamination and small voids only give a small reflection and can typically be visualized using GPR. Contrary to GPR, Ultrasound tomography results in a full reflection when interfacing air. This makes Ultrasound the ideal solution for investigation delaminations and small voids.