MAXAY YIHIIN DHAGAXAN DABIICIGA AH OO LAGU ISTICMAALO? dhagax muuqaaleed

Maxay yihiin qaar dhagaxyada dabiiciga ah 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.

Dhagxaan aan caadi ahayn

dhagax sedimentary

Dhagaxa nuuradda, dhagaxa-cammuudda iyo shale-ka ayaa ah noocyada ugu badan ee dhagaxa saldhiyada ah. Kuwaas waxa ay ku abuurmeen cadaadis aad u weyn, malaayiin sano, oo hoos u dhigayay wasakh ku dhacay sagxada badda.

Slate

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.

Dhagax nuurad

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.

Dhagax ciid

Sandstone waxay u badan tahay inuu ahaa dhagxaanta ugu badan ee la isticmaalo ka hor 1800, wax kasta laga bilaabo buundooyinka ilaa dhismayaal qurxoon. Sida laga yaabo in laga qiyaaso magaceeda, waxay abuurtaa marka ciidda, walxaha organic, calcite iyo macdano kale oo kala duwan ay isku darsameen cadaadis cajiib ah oo ku saabsan millennia. La heli karo iyada oo leh qaab aan dhab ahayn ama quruxsan oo dhaqan ahaan lagu bixiyo matte dhammays ah. Asal ahaan kareem, casaan ama cawl gudaha UK, midabkeedu wuxuu ku xiran yahay macdanta dheeraadka ah ee ku jirta. Silica waxay keentaa caddaan, halka birta ay siin doonto midab casaan-madow ah. Meelaha ugu muhiimsan ee laga isticmaalo waa darbiyada iyo sagxadaha, ama laamiga dibadda.

Marble

Marble waa asal ka soo jeeda nuurad, oo lagu sameeyay metamorphosis ee kulaylka weyn iyo cadaadiska malaayiin sano. Inkasta oo ay aad u jilicsan tahay marka loo eego dhagxaanta kale, marmar waxay u egtahay inay si fiican u dhalaalayso. Dhaqan ahaan marmar waxaa loo isticmaalaa albaabada waxayna caawisaa in la abuuro dhammayn heer sare ah.