Porphyry, a volcanic rock

Porphyry, a volcanic rock

14 Dec 2014 | Tech area

Trentino porphyry, a primary stratified effusive volcanic rock, dates back 270 million years and consists of a very compact underlying vitreous mass containing quartz crystals that give the products a number of outstanding physical and mechanical characteristics able...

Glossary

13 Dec 2014 | Tech area

Alignment The placing of one or more rows of blocks in line. Anchoring Attaching the elements to the load bearing structure. Assistance The supply of accessories for laying, usually supplied by the construction company: removal and dumping of waste material,...
The natural quarry surface

The natural quarry surface

4 Dec 2014 | Tech area

The distinctive feature of Italian porphyry is that it can be found in quarries in slabs varying from a few centimetres to some decimetres in thickness. By manually cleaving the rock strata, it is possible to extract some very resistant slabs with at least one flat,...