ORIGIN

The tuff stone is constituted nearly completely from products of a vulcanic activity that has prolonged in following phases for over a million years. In the case of products erupted during the effusive phases we us refers to two "litotipi" of which one it is that known with the generic name of “washes”, independently from its age and from the mineralogica composition, while the other is what in the recent vulcanologica literature it comes indicated with the modern term of “ignimbrite” even if commercially conserve still the name of “Tuff Litoide”.

FIRST USES

The tuff, material volcanic, very abundant both inside Rome that in the outskirtses, it started to be used from the VII century a.C., perhaps following the meeting between the Roman and the more evolved civilization Etruscan; it possesses in fact building qualities in how much is tender during the extraction, while to the air it hardens conferring a good isolation of environments.

ADVANTAGES

The elevated characteristic techniques of the tuff, also in the chromatic variations which to be add those physics among wich it set the attention on the lightness, on the tenacity and on the easy machinability, they consent to adapt it to any constructive situation. The tuff is particularly appreciated in the realization of inside and external carrying masonries, because its vacuolarità consent to realize lights structures but with characteristics of resistance and pressure rather elevated.

DELIVERY AND UNLOADING

The product is delivered in yard or warehouse, on balances or trailer trucks and the blocks of tuff are introduced on pallet to lose, or on request on euro-pallet to render. The drainage must happen with mean fit to the used pallet.

DISPOSITION

The disposition on yard or deposit must happen on levelled and dried surface. Don’t overlap between they the different pallets if they are not introduced on euro-pallet, is advised to prepare places side by side them to avoid lateral breakups

PLACING IN WORK

With the tuff stone litoide is  executed masonries also without binder placing in work the varied elements with the only approach of the same , usual the blocks of tuff, preferably dampened or sprayed with water, are put in work with mortar constituted from a binder, sand and water. To build a masonry in tuff can be employs nearly all the types of mortar, in general can be very adapted those manufactured with chalk, aerial lime, hydraulic lime, with it agglomerations with cement.

First of all to build in masonry means to contemporarily realize structure and walls (frontiers, partitions).

With the availability of blocks of notable dimensions and with excellent complex of performances, are gotten good outputs (speed and costs of construction) and of good quality (aesthetics and of performance).

To build a wall with blocks of tuff stone can be made in a single day and this is able to bear the weight of the attic soon after, while a pillar in concrete thrown in work requires at least a week of maturation.

FROM HOW MUCH SAID IT RESULTS THEREFORE THAT THE EMPLOYMENT OF SQUARE BLOCKS OF TUFO, ALREADY COMPETITIVE IN THE COST RESPECT TO OTHER CONSTRUCTION MATERIALS, ALSO INTRODUCES FURTHER ECONOMIC ADVANTAGES THAT DESERVE TO BE CONSIDERED IN PHASE TO PROJECT 

TECHNIQUES CHARATERISTICS