Inspection, investigation example 2 concrete investigation
I introduce the representative investigation method as the diagnosis, investigation into concrete structure method.
Close inspection of the situation to arrange by the electromagnetic wave radar method
At first the position of the reinforcing rod in the concrete is fogged, and measure thickness (depth of the reinforcing rod position from the concrete surface) beforehand. I explore it using an electromagnetic wave radar as method for measurement. I grasp the internal reinforcing rod situation without destroying it by this method beforehand.
Electromagnetic wave radar exploration situation photograph
Electromagnetic wave radar exploration situation video
Of the concrete fettle it, and investigate it
I fettle it (chipping) and I reduce a range of number 10cm and actually observe a concrete structure part depending on a purpose including the situation and the kind of the reinforcing rod and size and the corrosion situation of the reinforcing rod diameter to expose a reinforcing rod, and to arrange using a tool with the investigation directly.
By the way, based on the exploration result with the above-mentioned electromagnetic wave radar, it prevents grasping a reinforcing rod position, and preventing the damage of the reinforcing rod and from sharpening a too many part.
Of course the part which I sharpened after the investigation repairs it.
Concrete core collection investigation
I pull out a part as a sample using the drill which is special with concrete from a structure and I accept it for the purpose of it and actually do measurement experiment. The measurement contents include the following mainly.
Judgment of the measures division
I judge a structural material and the measures division of the damage kind and carry out the identification of the damage cause after carrying out inspection as needed, and having grasped the damage situation after an inspection result.
Compressive strength ... of theconcrete
neutralization depth ...
chloride content ...
chloride content ...
I repair this using concrete after the investigation.
A process and an investigation, method for measurement are established all in JIS (Japanese Industrial Standards),
We carry it out by an investigation method in conformity with a rule, too.
We carry it out by an investigation method in conformity with a rule, too.
Record of the result of a measurement
I fettle it and, with the above-mentioned result of a measurement, make it with the desired form of the customer as summary working papers including the position.
