Ground penetrating radar is a valuable tool for identifying concrete slab thickness very easily along with accurately. Determining slab thickness is essential in seeing exactly how concrete pavements may perform during their service life. Note that even a reduction in the thickness of the slab simply by less than one inch can easily cut in half its service life. Calculating the thickness of concrete slabs is additionally important in figuring out if contractors have complied with the job specifications when developing concrete pavements.
GPR is technology that's already being widely used in numerous states within their pavement evaluation systems, including North Carolina, Texas, Florida, Michigan along with Louisiana, as well as in quite a few European nations such as the UK, Finland and Denmark, with much success. The radar sends short pulses of radio waves into the concrete and then utilises the arrival time along with strength of the returning echoes to calculate thickness as well as properties including moisture content. However, GPR may not be in a position to make accurate measurements if there's not enough contrast between the concrete along with the underlying base.
What are the advantages of using GPR in computing concrete slab thickness?
GPR is technology that's already being widely used in numerous states within their pavement evaluation systems, including North Carolina, Texas, Florida, Michigan along with Louisiana, as well as in quite a few European nations such as the UK, Finland and Denmark, with much success. The radar sends short pulses of radio waves into the concrete and then utilises the arrival time along with strength of the returning echoes to calculate thickness as well as properties including moisture content. However, GPR may not be in a position to make accurate measurements if there's not enough contrast between the concrete along with the underlying base.
What are the advantages of using GPR in computing concrete slab thickness?
- Thickness data coming from the GPR can be instantly imported directly into pavement management systems so that they can determine the remaining life of the concrete pavement and determine the right maintenance along with repair actions. Radar readings may end up being changed into visual representation for simple interpretation or as ASCI file output.
- Measurements may end up being carried out by GPR equipped cars with minimal disruption to regular traffic since there's no more any need to close down lanes while measurements are generally being taken. Cars may cover around two hundred miles per day of pavement at typical highway speeds. And automated data collecting substantially cuts down on the time required to complete the survey.
- The cost of GPR is more affordable in comparison with conventional methods of identifying slab thickness including taking core samples. Concerned agencies have the option of buying their own equipment and training personnel to man it or even contracting services from providers, depending on the spending budget available to them for these functions.
- Highway personnel usually are completely safe whenever taking measurements since they are no longer subjected to hazardous situations for example high-speed traffic, inclement weather as well as air pollution.
- GPR enjoys a high range of accuracy within its measurements of concrete slab thickness. With respect to the type of layer being measured, you can enjoy accuracy within range of 3 % to 5 % (for new asphalt). But even measuring thick granular base can provide results precise to inside range of 8 % to fifteen percent.
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