Blocks Testing
MARENGOLD offers professional testing services for marble blocks.
Testing a block is an essential operation for a correct economic evaluation and requires a rigorous method and proven experience in order to obtain a reliable result. The testing is always carried out with a critical spirit, thinking of the primary objective: that of obtaining quality slabs in a suitable quantity with respect to the weight of the block in question.
First of all, it is necessary to recognize and classify the material in question, ascertaining its origin.
The block must be cleaned of all quarry residues and examined with the surface perfectly wet to correctly appreciate the physical and chromatic details.
The first phase of testing a block includes the geometric part: first of all the maximum (all marble) and average dimensions, but also the analysis of the more or less regular shape (from the ideal parallelepiped to the shapeless block as extreme cases, including all intermediate situations); it is always essential to consider the dimensions of the slabs that can be obtained.
Each type of material requires a…
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specific knowledge of the characteristics and defects that can typically be found. Characters are elements of aesthetic value and include color with its nuances and shades, texture and its regular distribution (uniformity), and particular characteristics such as the presence of fossils or crystals with a particular optical behavior (response to lighting).
The defects can be of an aesthetic or structural type and it is sometimes difficult to attribute one or the other type; The aesthetic defects may concern color shading, stains, chromatic unevenness, texture irregularities, lines that are unsightly to the eye, and other various similar situations; structural defects can include cracks, cavernous formations of a millimeter up to macroscopic size, volumes of inconsistent rock,
It is important to understand how characters and defects are reflected on slabs sawn on the reverse (vein cut) or the reverse (cross-cut): in many cases, one solution is decidedly preferable to the other and is indicated on the block with a series of parallel linear marks oriented according to the recommended sawing direction..