In the United States The United States of America is a federal constitutional republic comprising fifty states and a federal district. The country is situated mostly in central North America, where its forty-eight contiguous states and Washington, D.C., the capital district, lie between the Pacific and Atlantic Oceans, bordered by Canada to the north and Mexico to the, a concrete masonry unit (CMU) — also called concrete block, cement block or foundation block — is a large rectangular brick A brick is a block of ceramic material used in masonry construction, usually laid using mortar used in construction In the fields of architecture and civil engineering, construction is a process that consists of the building or assembling of infrastructure. Far from being a single activity, large scale construction is a feat of multitasking. Normally the job is managed by the project manager and supervised by the construction manager, design engineer,. Concrete blocks are made from cast Casting is a manufacturing process by which a liquid material is usually poured into a mold, which contains a hollow cavity of the desired shape, and then allowed to solidify. The solidified part is also known as a casting, which is ejected or broken out of the mold to complete the process. Casting materials are usually metals or various cold concrete Concrete is a construction material composed of cement as well as other cementitious materials such as fly ash and slag cement, aggregate (generally a coarse aggregate such as gravel, limestone, or granite, plus a fine aggregate such as sand), water, and chemical admixtures. The word concrete comes from the Latin word "concretus" (, i.e. Portland cement Portland cement is the most common type of cement in general use around the world, because it is a basic ingredient of concrete, mortar, stucco and most non-specialty grout. It is a fine powder produced by grinding Portland cement clinker (more than 90%), a limited amount of calcium sulfate which controls the set time, and up to 5% minor and aggregate Construction aggregate, or simply "aggregate", is a broad category of coarse particulate material used in construction, including sand, gravel, crushed stone, slag, recycled concrete and geosynthetic aggregates. Aggregates are a component of composite materials such as concrete and asphalt concrete; the aggregate serves as reinforcement, usually sand Sand is a naturally occurring granular material composed of finely divided rock and mineral particles and fine gravel Gravel is rock that is of a specific particle size range. Specifically, it is any loose rock that is larger than two millimeters in its smallest dimension (about 1/12 of an inch) and no more than 64 mm (2.5 in). The next smaller size class in geology is sand, which is >0.0625 to 2 mm (0.0025 to 0.0787 in) in size. The next larger size is cobble, for high-density blocks. Lower density blocks may use industrial wastes as an aggregate. Those that use cinders (fly ash Fly ash is one of the residues generated in the combustion of coal. Fly ash is generally captured from the chimneys of coal-fired power plants, and is one of two types of ash that jointly are known as coal ash; the other, bottom ash, is removed from the bottom of coal furnaces. Depending upon the source and makeup of the coal being burned, the or bottom ash Bottom ash refers to the non-combustible constituents of coal with traces of combustibles embedded in forming clinkers and sticking to hot side walls of a coal-burning furnace during its operation. The portion of the ash that escapes up the chimney or stack is, however, referred to as fly ash. The clinkers fall by themselves into the water or) are called cinder blocks in the US American English is a set of dialects of the English language used mostly in the United States. Approximately two thirds of native speakers of English live in the United States, breeze blocks (breeze is a synonym of ash)[1] in the UK British English, or UK English or English English , is the broad term used to distinguish the forms of the English language used in the United Kingdom from forms used elsewhere. There is confusion whether the term refers to English as spoken in the British Isles or to English as spoken in Great Britain, though in the case of Ireland, there are and are also known as besser blocks or bricks in Australia. Clinker blocks use clinker Clinker is a general name given to waste from industrial processes — particularly those that involve smelting metals, burning fossil fuels and using a blacksmith's forge which will usually result in a large buildup of clinker around the tuyère. Clinker often forms a loose, black deposit that can consist of coke, coal, slag, charcoal, grit, and as aggregate. In non-technical usage, the terms 'cinder block' and 'breeze block' are often generalized to cover all of these varieties. Lightweight blocks can also be produced using aerated concrete Autoclaved Aerated concrete , or otherwise known as Autoclave Cellular Concrete (ACC), is a lightweight, precast building material. AAC provides structure, insulation, fire and mold resistance in a single material. AAC products include blocks, wall panels, floor and roof panels, and lintels.
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Sizes and structure
Concrete blocks may be produced with hollow centres to reduce weight or improve insulation. The use of blockwork allows structures to be built in the traditional masonry Masonry is the building of structures from individual units laid in and bound together by mortar; the term masonry can also refer to the units themselves. The common materials of masonry construction are brick, stone such as marble, granite, travertine, limestone; concrete block, glass block, and tile. Masonry is generally a highly durable form of style with layers (or courses) of overlapping blocks. Blocks come in many sizes. In the US, the most common size is 8 in × 8 in × 16 in (20 cm × 20 cm × 41 cm); the actual size is usually about 3/8 in (1 cm) smaller to allow for mortar joints. In Ireland and the UK, blocks are usually 440 mm × 215 mm × 100 mm excluding mortar joints (approximately 17.3 in × 8.5 in × 3.9 in).
Uses
Concrete block, when reinforced with concrete columns A column in structural engineering is a vertical structural element that transmits, through compression, the weight of the structure above to other structural elements below. For the purpose of wind or earthquake engineering, columns may be designed to resist lateral forces. Other compression members are often termed "columns" because of and tie beams A beam is a structural element that is capable of withstanding load primarily by resisting bending. The bending force induced into the material of the beam as a result of the external loads, own weight and external reactions to these loads is called a bending moment, is a very common building material for the load-bearing Structural engineering is a field of engineering dealing with the analysis and design of structures that support or resist loads economically. Structural engineering is usually considered a specialty within civil engineering, but it can also be studied in its own right walls of buildings, in what is termed "concrete block structure" (CBS) construction. American suburban Suburbs, usually referring to a residential area, are defined in various different ways around the world. They can be the residential areas of a large city, or separate residential communities within commuting distance of a city. Some suburbs have a degree of political autonomy, and most have lower population density than inner city neighborhoods houses A house is generally a home, shelter, building or structure that is a dwelling or place for habitation by human beings. The term includes many kinds of dwellings ranging from rudimentary huts of nomadic tribes to high-rise apartment buildings. In some contexts, "house" may mean the same as dwelling, residence, home, abode, lodging, typically employ a concrete foundation A foundation is a structure that transfers loads to the earth. Foundations are generally broken into two categories: shallow foundations and deep foundations and slab with a concrete block wall on the perimeter. Large buildings typically use copious amounts of concrete block; for even larger buildings, concrete block supplements steel Steel is an alloy consisting mostly of iron, with a carbon content between 0.2% and 2.1% by weight, depending on the grade. Carbon is the most cost-effective alloying material for iron, but various other alloying elements are used such as manganese, chromium, vanadium, and tungsten. Carbon and other elements act as a hardening agent, preventing I-beams I-beams (also known as H-beams, W-beams , rolled steel joist (RSJ), or double-T (especially in Polish, Spanish and German)) are beams with an I- or H-shaped cross-section. The horizontal elements are flanges, while the vertical element is the web. The Euler-Bernoulli beam equation shows that this is a very efficient form for carrying both bending. Tilt-wall Tilt up or tilt-slab is a type of building, and a construction technique using concrete. The process resembles barn raising specifically and wood platform framing generally. It is cost-effective for low buildings construction, however, is replacing CBS for some large structures. The holes inside concrete block allow rebar A rebar, or reinforcing bar, is a common steel bar, and is commonly used in reinforced concrete and reinforced masonry structures. It is usually formed from carbon steel, and is given ridges for better mechanical anchoring into the concrete. It can also be described as reinforcement or reinforcing steel. In Australia, it is colloquially known as and concrete (creating reinforced concrete Reinforced concrete is concrete in which steel reinforcement bars , plates or fibers have been incorporated to strengthen a material that would otherwise be brittle) to run vertically through the block to compensate for the lack of tensile In physics, tension is the magnitude of the pulling force exerted by a string, cable, chain, or similar object on another object. It is the opposite of compression. As tension is a force, it is measured in newtons and is always measured parallel to the string on which it applies. There are two basic possibilities for systems of objects held by strength. Because most people find the appearance of concrete block to be drab and unattractive, exposed surfaces are generally given a decorative finish of stucco Stucco or render is a material made of an aggregate, a binder, and water. Stucco is applied wet and hardens to a very dense solid. It is used as a coating for walls and ceilings and for decoration. Stucco may be used to cover less visually appealing construction materials such as concrete, cinder block, or clay brick and adobe, brick A brick is a block of ceramic material used in masonry construction, usually laid using mortar, paint Paint is any liquid, liquifiable, or mastic composition which after application to a substrate in a thin layer is converted to an opaque solid film or siding Siding is the outer covering or cladding of a house meant to shed water and protect from the effects of weather. On a building that uses siding, it may act as a key element in the aesthetic beauty of the structure and directly impact its property value. This makes glazed masonry an ideal fit for areas in which special attention must be paid to moisture issues and sanitation codes. This includes car washes, pools, locker rooms, shower stalls and dining areas such as cafeterias and commercial kitchens.
In the United States The United States of America is a federal constitutional republic comprising fifty states and a federal district. The country is situated mostly in central North America, where its forty-eight contiguous states and Washington, D.C., the capital district, lie between the Pacific and Atlantic Oceans, bordered by Canada to the north and Mexico to the, concrete masonry standards are maintained by the National Concrete Masonry Association.
Breeze blocks are no longer used in the UK[2] because of their low compressive strength.[citation needed] Despite this, the term is still widely used to refer to concrete blocks more generally.
Gallery
This gallery shows images of 200 series (190 x 190 x 390 full blocks) modular concrete blockwork used in residential construction in a cyclonic region of Northern Australia. Typically there is a vertical reinforced (N12 [1/2" or #4 U.S.] or N16 [5/8" or #5 U.S.] rebar A rebar, or reinforcing bar, is a common steel bar, and is commonly used in reinforced concrete and reinforced masonry structures. It is usually formed from carbon steel, and is given ridges for better mechanical anchoring into the concrete. It can also be described as reinforcement or reinforcing steel. In Australia, it is colloquially known as) concrete core at every corner, alongside each opening and at 600mm (24") centers elsewhere. Bond beams (typically 2/N12 [1/2" or #4 U.S.] rebar) occur continuously around perimeter and over all openings and under windows. Corefill concrete is typically 15Mpa (2,200 psi) compressive strength. For more photos of similar construction see hurricane proof building Tornadoes, cyclones, and other strong winds damage or destroy many buildings. However, with proper design and construction, the damage to buildings by these forces can be greatly reduced or eliminated. Over time, a variety of methods have been studied and tested that can help a building survive strong winds and storm surge. Local building.
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N12 starter bars cast into concrete raft slab. |
Clean out blocks to flush out debris prior to placing corefill. |
Wall under construction, metal door jamb and one aluminium window in position at the left. A pallet of knock out bond beam blocks on the right. |
Short (three blocks high) retaining wall ready for corefill. All core will be filled. |
See also
- Aerated blocks Autoclaved Aerated concrete , or otherwise known as Autoclave Cellular Concrete (ACC), is a lightweight, precast building material. AAC provides structure, insulation, fire and mold resistance in a single material. AAC products include blocks, wall panels, floor and roof panels, and lintels
- Brick A brick is a block of ceramic material used in masonry construction, usually laid using mortar
References
- ^ "breeze, n.3". The Oxford English Dictionary (2nd ed.). Oxford University Press. 1989. http://dictionary.oed.com/cgi/entry/50027165/50027165se1. Retrieved 2007-11-30.
- ^ "Blocks & Blockwork". University of the West of England, Faculty of the Built Environment. http://environment.uwe.ac.uk/video/cd_new_demo/Conweb/walls/blocks/print.htm. Retrieved 2007-11-30.
External links
- http://www.ncma.org - National Concrete Masonry Association
- http://www.cmacn.org - Concrete Masonry Association of California and Nevada
- How Products Are Made: Volume 3 Concrete Block
Categories: Building materials Building materials, fixtures, furnishings, equipment and devices used in the field of architecture, engineering and construction to create buildings and structures | Masonry
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Not only did he build in out of masonry materials he installed an American flag in the wall using painted splitface masonry units glazed masonry units and good ol fashioned ingenuity Natural grey and Camelia red lightweight concrete splitface units were used along with Lehigh s natural grey mortar
sherry
hu, 25 Jun 2009 14:30:28 GM
The winners from each school s NCMA Student . Unit. Design Competition will compete at the National . Concrete Masonry. Association s midyear meeting in Chicago this August. NC State s event includes a drystack build competition, as well. ...
Q. i work for an architecture firm and i was wondering if anyone knew where i can get some decorative concrete masonry units to use inside a bathroom at a local pool? it needs to come in 4" and be rounded. i searched but only found corporations that sell regular (not rounded). and whoever sells it needs to be in Pennsylvania or nearby. this is an incredibly specific question and any help at all would be great. and if you find their website it would also be great if you could include that in your answer too. thanks!
Asked by scrchick - Wed Sep 17 19:01:45 2008 - - 1 Answers - 0 Comments
A. Have you tried home improvement stores such as Home Depot or Lowe's. My dad owned a masonry company maybe you could look up masonry contractors in your area they always have leftovers you might pick up the items you are looking for, for a good price too.
Answered by ShalomaPuppyCom - Wed Sep 17 19:22:32 2008
