Porphyry's Green Attributes
Porphyry is a type of volcanic, igneous rock which, along with granite and other rock formations, makeup approximately 95 percent of the worlds “crust.” These rocks are the result of intense volcanic activity begun over 260 million years ago. Highly valued for its appearance, Porphyry natural stone pavers have been used for paving since ancient times. Many of these roads, plazas, and walkways are still used today.
When set on properly prepared aggregate sub-base, Porphyry pavers will last hundreds, and even thousands of years. It is a material with a long lifespan that requires very little maintenance and infrequent repairs. Increasingly, conventional paving solutions are not meeting changing standards and expectations. Many are short term solutions which require environmentally unfriendly processes that require maintenance, constant resurfacing and often replacement within a few years of installation creating greater costs over time. Life cost analysis show the strong value and sustainability that Porphyry pavers provide.
Porphyry is unique in the granite family. As the formation of magma cooled, seismic activity occurred, causing splits and creating layers of flagging in various thicknesses.
The stone is extracted from the quarry face using explosives. A series of small explosives are placed at the base of the formation. The blast loosens the stone layers, causing the stone to fall. Porphyry is extracted with greater ease than other stones.
The porphyry is sorted and reduced to dimensions which can be dealt with by the quarry workers who sort the material. Using mallets and wedges, slabs of variable sizes and thicknesses are obtained from the blocks. The slabs are sorted based on thickness, size and shape. The slabs are then taken to the cutting area to be snap cut or sawn into various widths and lengths. The cut pavers are stacked on pallets for shipping.
The quarrying process produces pavers using a minimal amount of energy. Monolithic granite formations require the stone to be sawn - using power to run the saws and water to lubricate and cool the blades. Granite pavers must then be processed on all sides to make them suitable for use - using more power and water. Porphyry is only shaped on its edge dimensions, reducing the amount of energy used.
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