INONA IREO VATO NATURAL LELEVELO ARY AIZA NO AZO AMPIASAINA? vato lanezy

Nahoana ny sasany vato voajanahary considered to be soft when they all appear to be hard? The answer lies within ‘relative’ hardness. Mohs scale of hardness was invented in 1812 and compares the relative hardness of ten minerals. Diamond is the hardest and rates a 10, while granite is the toughest natural stone at 6. Limestone comes in at 3 as does its metamorphic counterpart, marble. Softer stone is easier to dress or carve but does not wear or weather quite as well as harder stone. Here we discuss some of the more popular soft stones along with suitable applications.

Vato tsy ara-dalàna

Vatolampy sedimentary

Ny vatosokay, ny fasika ary ny shale no karazana vato sedimentary mahazatra indrindra. Izy ireo dia niforona tamin'ny alalan'ny fanerena mahery vaika, nandritra ny an-tapitrisa taonany, ary nampidina ny antsanga latsaka tany amin'ny fanambanin'ny ranomasina.

bato

The layers in slate are described as being “foliated” and they are easily split apart to create whatever thickness is required. UK slate is considered to be hard and was traditionally used as roofing, while soft slate is found in China, Spain, Italy and the USA. With a broad range of natural slate colours, a multiple array of designs can be achieved, from contemporary to classic, rustic to refined. Slate is often recommended for high traffic areas, thanks to its remarkably durable composition. It is also non-porous and does not easily react with acid liquids. It is fire proof, weather resistant and achieves good slip resistance dues to its riven finish.

vatosokay

Limestone is a very common building material and is formed mainly from the mineral calcite, derived from the calcium in bones and seashells deposited over the millennia and forced together through pressure. While it also contains magnesium, it is harder and more weather resistant, and can also be polished. Portland stone from the eponymous island in Dorset is probably the single most famous type of limestone and was used to build many of London’s great buildings. It is used for external cladding as well as paving, fireplaces and other internal and external decorative features. Its soft colours are its trademark visual attributes.

vatovary

Sandstone angamba no vato fanorenana fampiasa matetika indrindra talohan'ny taona 1800, ho an'ny zava-drehetra manomboka amin'ny tetezana ka hatramin'ny trano mihaja. Araka ny azo tsoahina avy amin'ny anarany, dia niforona izy io rehefa nitambatra ny fasika, ny zavatra organika, ny calcite ary ny karazana mineraly maro hafa tao anatin'ny fanerena tsy mampino nandritra ny an'arivony taona maro. Misy amin'ny temotra manjavozavo na tsara ary atolotra amin'ny fomba matte. Voalohany indrindra, crème, mena na volondavenona any UK, ny lokony dia miankina amin'ny mineraly fanampiny ao anatiny. Ny silica dia manome loko fotsy, fa ny vy kosa dia manome loko mena mena. Ny faritra tena ampiasany dia ny rindrina sy ny gorodona, na ny paving ivelany.

Marbra

Ny marbra dia avy amin'ny vatosokay, miforona amin'ny alàlan'ny metamorphose ny hafanana goavambe sy ny tsindry mandritra ny an-tapitrisany taona. Na dia somary malefaka aza raha oharina amin'ny vato hafa, ny marbra dia mazàna mikotrika tsara. Ny marbra amin'ny fomba mahazatra dia ampiasaina amin'ny varavarana ary manampy amin'ny famoronana vokatra avo lenta.