BATU ALAMI APA YANG LEBIH LEMBUT DAN DIMANA DAPAT DIGUNAKAN? batu lanskap

Mengapa ada beberapa batu alam 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.

Batu tidak beraturan

Batuan sedimen

Batu kapur, batu pasir dan serpih adalah jenis batuan sedimen yang paling umum. Ini terbentuk melalui tekanan yang luar biasa, selama jutaan tahun, menekan sedimen yang jatuh ke dasar laut.

Batu tulis

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.

Batu gamping

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.

Batu pasir

Batu pasir mungkin merupakan batu bangunan yang paling umum digunakan sebelum tahun 1800, mulai dari jembatan hingga bangunan megah. Seperti dapat disimpulkan dari namanya, mineral ini terbentuk ketika pasir, bahan organik, kalsit, dan berbagai mineral lainnya menyatu di bawah tekanan luar biasa selama ribuan tahun. Tersedia dengan tekstur kasar atau halus dan secara tradisional tersedia dalam hasil akhir matt. Terutama krem, merah atau abu-abu di Inggris, warnanya tergantung pada mineral tambahan yang terkandung di dalamnya. Silika memberikan warna putih, sedangkan besi memberikan warna kemerahan kecoklatan. Area penerapan utamanya adalah dinding dan lantai, atau pengerasan jalan eksterior.

Marmer

Marmer merupakan turunan dari batu kapur, terbentuk melalui metamorfosis panas dan tekanan yang sangat besar selama jutaan tahun. Meski relatif lembut dibandingkan batu lainnya, marmer cenderung dipoles dengan sangat baik. Secara tradisional marmer digunakan di pintu dan membantu menciptakan hasil akhir yang mewah.