How To Detect Voids In Concrete Walls

Concrete scanning services was commissioned to scan a 3m x 8m block wall in order to detect any voids or missing reinforcement.

How to detect voids in concrete walls.

Our non destructive testing solutions can help identify and quantify voids in concrete elements such as slab on grade walls bridge piers and mass concrete blocks. Numerous voids were detected and mapped for a company to perform remediation. When the mixing time is extended air and water break up in the process. Honeycombs voids were seen visually.

Is there a special technique for applying it. Although there were no visible cracks or evidence of shifting in the. They had a number of areas where they needed to place cranes to aid with the construction. Most of these water drops come form the mixing water but some are introduced from the cavities of the moist aggregate particles form which they are forced during vibration.

Water voids occur in the concrete surface when drops of water become entrapped between the concrete and the form during vibration. Tip 3 vibration of the concrete has influence on the elimination of surface voids. The water later evaporates to leave voids. I will need to fill all the voids to make this look a bit more finished.

Voids can be a result of poor quality concrete congested steel rebar and inappropriate concrete placement and finish. The reason behind a bad structure. Using gpr is an effective way to detect voids under concrete foundations. By vibrating the concrete either inside or outside of the mould the vibration moves residual water and air to the surface of the.

Can anyone recommend a product for this job. I placed concrete in a form for a chimney cap. Detecting subsurface voids in concrete via gpr. In this case study the port arthur refinery in texas was planning additional construction on their site.

Due to the ability of ground penetrating radar gpr to detect changes in the subsurface including voids and steel reinforcement it is an ideal survey technique to identify voided cores and missing. The picture displayed is an example where precision was hired to determine void pockets at a water reservoir in vancouver. An examination was requested to see if the entire wall was affected. We work these professionals across all industries from the military to municipalities and commercial to residential real estate.

A major problem nowadays are the uneven surfaces like the voids and cavities on the floor inside walls or around the sideways are occurring due to improper construction works or soil erosion and it affects the foundation badly leading to building collapse and losing the magnificence of the structure. Potential voids in reinforced concrete slabs walls bridges and other structures cause real concerns for engineers and contractors. In the end the wall was repaired by injection with epoxy. Just removed the forms and the outside surfaces that were in contact with the forms are very rough looking.