If the surface is between two liquids (such as water and oil), it is called "interface tension." Unlike those of post-tensioned concrete (see below), the tendons of pre-tensioned concrete elements generally form straight lines between end-anchorages. Bangla meaning of tension … This term is typically used only when the liquid surface is in contact with gas (such as the air). The large forces required to tension the tendons result in a significant permanent compression being applied to the concrete once the tendon is "locked-off" at the anchorage. , Circular storage structures such as silos and tanks can use prestressing forces to directly resist the outward pressures generated by stored liquids or bulk-solids. Rank popularity for the word 'tension' in Spoken Corpus Frequency: #3003, Rank popularity for the word 'tension' in Nouns Frequency: #1061, The numerical value of tension in Chaldean Numerology is: 3, The numerical value of tension in Pythagorean Numerology is: 6. :25:7 The method of locking the tendon-ends to the anchorage is dependent upon the tendon composition, with the most common systems being "button-head" anchoring (for wire tendons), split-wedge anchoring (for strand tendons), and threaded anchoring (for bar tendons). : 3–5 This compression is produced by the tensioning of high-strength "tendons" located within or adjacent to the concrete and is done to improve the performance of the concrete in service. Google's free service instantly translates words, phrases, and web pages between English and over 100 other languages.  Prestressing is also frequently retro-fitted as part of dam remediation works, such as for structural strengthening, or when raising crest or spillway heights. In this way, additional corrosion protection is provided via the grease, plastic sheathing, grout, external sheathing, and surrounding concrete layers.:1. Prestressed concrete is a form of concrete used in construction. Post-tensioned concrete is a variant of prestressed concrete where the tendons are tensioned after the surrounding concrete structure has been cast. Unbonded post-tensioning can take the form of: For individual strand tendons, no additional tendon ducting is used and no post-stressing grouting operation is required, unlike for bonded post-tensioning. This grouting is undertaken for three main purposes: to protect the tendons against corrosion; to permanently "lock-in" the tendon pre-tension, thereby removing the long-term reliance upon the end-anchorage systems; and to improve certain structural behaviors of the final concrete structure.. This provides many benefits to building structures: Some notable building structures constructed from prestressed concrete include: Sydney Opera House and World Tower, Sydney; St George Wharf Tower, London; CN Tower, Toronto; Kai Tak Cruise Terminal and International Commerce Centre, Hong Kong; Ocean Heights 2, Dubai; Eureka Tower, Melbourne; Torre Espacio, Madrid; Guoco Tower (Tanjong Pagar Centre), Singapore; Zagreb International Airport, Croatia; and Capital Gate, Abu Dhabi UAE. These include the following: Acceleration of heart and lung action, paling or flushing, or alternating between both, inhibition of stomach and upper-intestinal action to the point where digestion slows down or stops, the general effect on the sphincters of the body, constriction of blood vessels in many parts of the body, liberation of nutrients (particularly fat and glucose) for muscular action, dilation of blood vessels for muscles, inhibition of the lacrimal gland (responsible for tear production) and salivation, dilation of pupil (mydriasis), relaxation of bladder, inhibition of erection, auditory exclusion (loss of hearing), tunnel vision (loss of peripheral vision), disinhibition of spinal reflexes, and Shaking. Voltage. These anchorages form the ends of a "casting bed" which may be many times the length of the concrete element being fabricated. It is substantially "prestressed" during production, in a manner that strengthens it against tensile forces which will exist when in service. Either one is capable of delivering code-compliant, durable structures meeting the structural strength and serviceability requirements of the designer.:2. Failure of any of these components can result in the release of prestressing forces, or the physical rupture of stressing tendons. Worldwide, many professional organizations exist to promote best practices in the design and construction of prestressed concrete structures. , Concrete is the most popular structural material for bridges, and prestressed concrete is frequently adopted. Prestressed concrete is used in a wide range of building and civil structures where its improved performance can allow for longer spans, reduced structural thicknesses, and material savings compared with simple reinforced concrete. Stress management is recognized as an effective treatment modality to include pharmacologic and non-pharmacologic components. Blast containment walls, such as for liquid natural gas (LNG) tanks, will normally utilise layers of horizontally-curved hoop tendons for containment in combination with vertically looped tendons for axial wall prestressing. Higher bond strength in early-age concrete will speed production and allow more economical fabrication. :5–6:48:9–10, In bonded post-tensioning, tendons are permanently bonded to the surrounding concrete by the in situ grouting of their encapsulating ducting (after tendon tensioning). Anchorages at each end of the tendon transfer the tensioning force to the concrete, and are required to reliably perform this role for the life of the structure.:1. Definitions.net. State of an elastic object which is stretched in a way which increases its length. This compression is produced by the tensioning of high-strength "tendons" located within or adjacent to the concrete and is done to improve the performance of the concrete in service. (Below) End-view of slab after stripping forms, showing individual strands and stressing-anchor recesses. While pre-tensioned concrete uses tendons directly bonded to the concrete, post-tensioned concrete can use either bonded or unbonded tendons. :52–59 The essence of prestressed concrete is that once the initial compression has been applied, the resulting material has the characteristics of high-strength concrete when subject to any subsequent compression forces and of ductile high-strength steel when subject to tension forces. Fabrication of bonded tendons is generally undertaken on-site, commencing with the fitting of end-anchorages to formwork, placing the tendon ducting to the required curvature profiles, and reeving (or threading) the strands or wires through the ducting. Stress can initiate the "fight or flight" response, a complex reaction of neurologic and endocrinologic systems. As tension is the magnitude of a force, it is measured in newtons and is always measured parallel to the string on which it applies. This bundling makes for more efficient tendon installation and grouting processes, since each complete tendon requires only one set of end-anchorages and one grouting operation. At each end of a tendon is an anchorage assembly firmly fixed to the surrounding concrete. I mean, freedom is burdensome. ... muscular tension, irritability, and depression. There is this tension.
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