Concrete coring (or concrete coring) is the process of extracting a cylindrical concrete sample from a structure. It is used in a variety of fields, such as plumbing, electrical, drainage, manholes, air conditioning and structural testing. In the world of drilling, concrete coring is the process of cutting or drilling concrete, whether it's ceilings, walls or floors. It is usually done by professionals and is not suitable for DIY projects such as drilling small holes in a wall for furniture or hangings. The core is usually a square or rectangular reinforced concrete tube located inside the building.
It consists of concrete walls with openings for access and egress, and is usually located in the centre of the floor plan, with the usable space - for flats, offices, etc. - arranged around it. But it can also be offset, which makes better use of the floor space. Concrete coring is a drilling technique that involves drilling cylindrical holes in concrete structures (floors, walls and ceilings) to accommodate new ducts, pipes, HVAC ducts, reinforcement and other systems. It can also be used to remove unwanted concrete from a property.
Concrete coring is also a term used to define the process of creating a concrete core for a building. Concrete coring involves drilling perfectly round holes in concrete walls, floors, ceilings and other concrete structures. This allows for the installation of amenities such as telephone lines, plumbing, HVAC ducts, sprinkler systems and others. The process also includes cement mixes which increases the database beyond the current limit of only considering Portland cement concretes. The study showed that the load-bearing capacity of SCC-filled pipes is significantly higher than that of similar pipes filled with conventional concrete. The structural performance of the concrete filled pipe system is highly dependent on the integrity and uniformity of the concrete core, which can be achieved by effective consolidation of the fresh concrete during placement. Concrete coring by companies involves breaking, cutting or sawing the concrete and removing the chunks.
As discussed in Chapter 2, due to the effect of shortening, differential movement may be incurred especially in the building structural system which is a combination of steel and concrete. The tendency of concrete to creep or shrink over time and the thermal expansion of steel must be considered. The corium bath is therefore a multi-component and multiphase material (liquid, solid and gaseous), whose composition and physical properties are constantly evolving during the ICBM due to concrete decomposition and chemical reactions. It is known that concrete at greater depths tends to become denser due to segregation of the material after placement. This chapter describes the procedures currently used for concrete coring and testing and details the preliminary and planning work required, the location and sampling of cores, examination, measurement, pre-test preparation, interpretation and reporting of results. The concrete strength estimated from the average TDD was 28.5 Nmm2 excluding surface data at a core depth of 10 mm.