Raw material is something that can be used as building material to create some structure. The term of raw material can be also described as unprocessed material that is required for processing. For example iron ore, logs and crude oil are can be known as raw material.
LIMESTONE FOUND AND USE
The Limestone becomes more popular in the late 19th
and early 20th centuries. During the specified era, train stations, banks and other structures made up with the limestone. In the United Startes, the State of Indiana specifically Bloomington area has been earlier source use of high quality of quarried limestone. It is called as Indiana limestone. Beer stone was a popular kind of limestone for the era of Middle age. The limestone is a rock that is formed from flint, clay, sand, silt and calcite. The limestone made up 10% of the total volume of sedimentary rock throughout the world.
The use of limestone is common in architecture especially in the North America and Europe. The historical properties like Great Pyramid and its associated are made up with limestone. Many buildings in Canada were constructed with limestone resulting the nickname of Limestone City. Limestone is important rocks and can be used for building materials. Limestone is primary source of lime for cements. The Cement is considered one of the most important construction materials. The limestone crushed and used as road ballast.
The limestone is a sedimentary rock and composed with mineral calcite. The limestone is regarded as bi-product and an indicator of biological activity in the geologic record. Limestone is most important stone in the works of masonry and architecture. Limestone is considered as valuable raw material as it is key ingredient for quicklime, mortar, cement and concrete. The primary source of the calcite in limestone is from marine organisms. Such organisms secrete shells and then caused to deposit in ocean floors as pelagic ooze. The Limestone sometimes contains variable amounts of silica but in the form of chert or flint.
HARD WATER
The hard water is such water than has high mineral content such as calcium and magnesium ions. Hence the hard primarily consist of calcium and magnesium besides bicarbonates and sulfates sometimes. The Calcium enters to the water either in form of calcium carbonate i.e. limestone and chalk or calcium sulfate. Such hard water is not harmful to the health of humans.
USEFUL MATERIAL
As the Limestone creates no. of products like cement, concrete, glass etc., all of such products useful in the human life that is lined with the rapid change. Hence the limestone turns the life of human in different shades. The limestone described as useful material since it is used to neutralize acid soils to reduce acidity of soils, used in cement and concrete procedure, making glasses it becomes much familiar as useful material.
