Scabbling—also called scappling—is the process of reducing stone or concrete. In masonry, it refers to shaping a stone to a rough square by use of an
axe
An axe ( sometimes ax in American English; see spelling differences) is an implement that has been used for millennia to shape, split and cut wood, to harvest timber, as a weapon, and as a ceremonial or heraldic symbol. The axe has ma ...
or
hammer.
In Kent,
rag-stone
Rag-stone is a name given by some architectural writers to work done with stones that are quarried in thin pieces, such as Horsham Stone, sandstone, Yorkshire stone, and the slate stones, but this is more properly flag or slab work. Near London ...
masons call this "knobbling".
[ It was similarly used to shape grindstones.
In modern construction, scabbling is a mechanical process of removing a thin layer of concrete from a structure, typically achieved by compressed air powered machines. A typical scabbling machine uses several heads, each with several ]carbide
In chemistry, a carbide usually describes a compound composed of carbon and a metal. In metallurgy, carbiding or carburizing is the process for producing carbide coatings on a metal piece.
Interstitial / Metallic carbides
The carbides of th ...
or steel tips that peck at the concrete. It operates by pounding a number of tipped rods down onto the concrete surface in rapid succession. It takes several passes with the machine to achieve the desired depth.
Scabbling is used to remove road markings, surface contamination
Contamination is the presence of a constituent, impurity, or some other undesirable element that spoils, corrupts, infects, makes unfit, or makes inferior a material, physical body, natural environment, workplace, etc.
Types of contamination
...
(used in the nuclear
Nuclear may refer to:
Physics
Relating to the nucleus of the atom:
* Nuclear engineering
*Nuclear physics
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Mathematics
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industry), to add a decorative or textured pattern to concrete, or to prepare a concrete surface prior to the installation of grout.[ ]
See also
*
References
Masonry
Stonemasonry
Construction
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