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Construction aggregate. Construction aggregate, or simply aggregate, is a broad category of coarse- to medium-grained particulate material used in construction, including sand, gravel, crushed stone, slag, recycled concrete and geosynthetic aggregates. Aggregates are the most mined materials in the world.
A single concrete block, as used for construction. Concrete is a composite material composed of aggregate bonded together with a fluid cement that cures to a solid over time. Concrete is the second-most-used substance in the world after water, [ 1] and is the most widely used building material. [ 2] Its usage worldwide, ton for ton, is twice ...
Polyurethane foam made with an aromatic isocyanate, which has been exposed to UV light. Readily apparent is the discoloration that occurs over time. Custom-cast polyurethane objects. Polyurethane products have many uses. Over three quarters of the global consumption of polyurethane products is in the form of foams, with flexible and rigid types ...
Geopolymer. A geopolymer is an inorganic, typically ceramic -like material that forms covalently bonded, non-crystalline ( amorphous) networks. Many geopolymers may also be classified as alkali-activated cements or acid-activated binders. They are mainly produced by a chemical reaction between a chemically reactive aluminosilicate powder e.g ...
Cement is seldom used on its own, but rather to bind sand and gravel ( aggregate) together. Cement mixed with fine aggregate produces mortar for masonry, or with sand and gravel, produces concrete. Concrete is the most widely used material in existence and is behind only water as the planet's most-consumed resource.
A wall constructed in glazed-headed Flemish bond with bricks of various shades and lengths. An old brick wall in English bond laid with alternating courses of headers and stretchers. A brick is a type of construction material used to build walls, pavements and other elements in masonry construction. Properly, the term brick denotes a unit ...
Muscovite (also known as common mica) can be found in rocks used to make concrete blocks. It is estimated that a presence of 1% of muscovite in concrete reduces the strength of the internal bonding by 5%, and further that such blocks bond poorly with cement paste. [ 2 ]
Block Solutions of Finland is revolutionizing the construction industry with interlocking Lego-like building blocks that are made using waste plastic. Lego-like construction blocks made from ...