Taking the time to scan the floor before concrete coring will save you time and money. It will also help you detect voids, air pockets and corrosion. Check out this concrete page for the concrete coring services.
Ground penetrating radar (GPR)
Whether you’re considering a major construction project or just need to know the status of a certain site, ground penetrating radar (GPR) can help you get the information you need. Unlike other types of scans, GPR is a nondestructive means of inspecting subsurface objects.
GPR works by emitting electromagnetic waves to the subsurface, looking for changes in the returning radar wave signal. This method is non-invasive and can be used to assess materials prior to drilling, as well as locate buried objects and utilities.
Using GPR for a construction project is an excellent way to ensure safety during concrete coring and cutting. The process is easy to set up, and is safe for people and surrounding structures. It’s also an incredibly accurate method for detecting subsurface aberrations.
A GPR scan can provide a clear picture of the area where the cut will go. It can also reveal the orientation of objects that are embedded in the ground. These can include buried pipes, post-tension cables, and steel reinforcement bars.
Detecting voids
Detecting voids before concrete coring is essential for the structural integrity of a structure. It helps in locating areas of weakness and determining areas where repair needs to be performed. A void can be caused by poor compaction, erosion or improper pouring techniques. If not properly repaired, a void can cause a concrete slab to crumble into the ground and cause major damage.
The best way to find voids in concrete is through the use of a GPR (Ground Penetrating Radar) survey. This type of survey is used to locate voids in concrete by detecting the reflected signals from subsurface objects. The technology transmits an electromagnetic signal directly into the ground and records the reflections instantly. The results can be plotted as individual profiles.
GPR is not only effective in detecting voids, but it is also less invasive than other methods. For example, core extraction can create holes in a concrete slab, but it does not take into account variances in the slab’s thickness.
Detecting air pockets
Detecting air pockets before concrete coring can help prevent serious structural failure. Air pockets are formed when there is not enough sealant to fully encapsulate wires or rebar. They can then move around in the groove and be falsely detected.
The best way to detect air pockets is to use a biological indicator. This is a special detector that measures the diameter of the subsurface obstruction. Other methods cannot detect air pockets. In addition, most of the methods do not take into account the characteristics of the air pocket.
A number of papers have been published on the subject of hydrogen sulfide corrosion in wastewater pipelines. Most of these studies refer to detection and monitoring. The EPA has also published many papers on hydrogen sulfide corrosion.
A few papers have also been published on the subject of air pockets. However, most of the papers do not discuss prevention methods.
Detecting corrosion
Detecting corrosion before concrete coring is essential for the safety assessment of infrastructure. Corrosion damage is one of the most common causes of structural failure. It is caused by various factors, including physical damage, shrinkage and chemical attack. It also reduces the strength and ductility of the reinforcing bar.
Various studies have been conducted to analyze the nature of corrosion products. They show that cracks in concrete can result from various factors, such as shrinkage, mechanical damage or chemical and environmental attack. These studies are conducted on both natural and artificial samples.
Using a combination of X-ray and neutron tomography, the corrosion products inside concrete were investigated in a non-destructive 3-D environment. They revealed the penetration of different corrosion products, including aggregates and cement paste. It also revealed the presence of iron-to-rust volumetric ratio, which corresponded to large soluble corrosion products.
Pre-pour scanning
Having a pre-pour scanning plan can save you a lot of trouble and money down the road. This technique, also known as 3D laser scanning, captures a point cloud before the concrete is poured. This cloud is then colored in a 3D format to provide accurate measurements within two millimeters.
Using a pre-pour scanning plan also helps you avoid damage to conduits and reinforcement. You’ll know where to look to avoid cutting into power cables or water mains. The point cloud also indicates any embedded fixtures, rebar or post-tensioning cables.
A pre-pour scanning plan can also help you keep track of changes to the original design. This can be useful if you are renovating or building a new building. You may want to change the floor plans to accommodate a change in usage.