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The first residential building of slipform construction; erected in 1950 in Västertorp, Sweden, by AB Bygging Later picture of the residential building in Västertorp. Slip forming, continuous poured, continuously formed, or slipform construction is a construction method in which concrete is placed into a form that may be in continuous motion horizontally, or incrementally raised vertically.
If the slab is to be reinforced, the rebars, or metal bars, are positioned within the formwork before the concrete is poured in. [26] Plastic-tipped metal or plastic bar chairs, are used to hold the rebar away from the bottom and sides of the form-work, so that when the concrete sets it completely envelops the reinforcement.
Concrete floor of a parking garage being placed Pouring and smoothing out concrete at Palisades Park in Washington, DC Workability is the ability of a fresh (plastic) concrete mix to fill the form/mold properly with the desired work (pouring, pumping, spreading, tamping, vibration) and without reducing the concrete's quality.
Cast-in-place concrete or Cast-in-situ concrete is a technology of construction of buildings where walls and slabs of the buildings are cast at the site in formwork. [1] This differs from precast concrete technology where slabs are cast elsewhere and then brought to the construction site and assembled. [ 2 ]
Concrete sidewalk with horizontal strain-relief grooves in Winnemucca, Nevada in 2014. In the United States and Canada, the most common type of sidewalk consists of a poured concrete "ribbon", examples of which from as early as the 1860s can be found in good repair in San Francisco, and stamped with the name of the contractor and date of ...
An audit of L.A.'s scandalous response to broken sidewalks put the service call backlog at 50,000, but there is no long-range plan in place to make those fixes Column: LA's cracked, ruptured ...
Stamped concrete is an architectural concrete that has a superior surface finish. After a concrete floor has been laid, floor hardeners (can be pigmented) are impregnated on the surface and a mold that may be textured to replicate a stone / brick or even wood is stamped on to give an attractive textured surface finish.
Permeable interlocking concrete pavements are concrete units with open, permeable spaces between the units. [ 28 ] : 2 More recently manufacturers have introduced styles with smaller joint allowing for better ADA compliance and still capturing a significant amount of stormwater.
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