prestress construction hydraulic jack
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Hydraulic Jacks in the Construction Industry | Metro Hydraulic
Mar 01, 2018· A jack is a versatile tool that uses force to lift heavy loads. Screw threads and hydraulic cylinders are the primary mechanisms with which force is applied; therefore, jacks fall under the categories of mechanical or hydraulic. Mechanical jacks, such as car jacks and house jacks, hoist heavy equipment and are rated on lift capacity.
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Hydraulic Prestress Jack, Hydraulic - alibaba.com
.com offers 3,361 hydraulic prestress jack products. About 60% of these are car jacks, 17% are metal building materials. A wide variety of hydraulic prestress jack options are available to you, such as hydraulic jack, electric jack.
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Prestressing Jack, Prestressing Jack Suppliers and
.com offers 3,781 prestressing jack products. About 58% of these are car jacks, 17% are metal building materials. A wide variety of prestressing jack options are available to you, such as hydraulic jack, electric jack, and bottle jack.
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Construction Hydraulic Prestressing Mono Stressing
Mono jack Description: Mono stressing cable prestressing construction mini hydraulic jack are a multipurpose prestressed tensioning device, easy to operate. Mainly used for single hole tension. also used for,porous preloaded , tensioning and troubleshooting,and can be applied to a variety of sizes of high strength steel wire and steel strand.
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Prestressed concrete - Wikipedia
Prestressed concrete is a form of concrete used in construction. It is substantially "prestressed" during its fabrication, in a manner that strengthens it against tensile forces which will exist when in service.: 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 ...
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Post Tensioning Jack for Prestress Concrete Construction
1, Hydraulic Strand Jack is a kind of general purpose for prestressing applied for pre-tension and post-tension of various steel strand anchors. 2, Hydraulic strand jack is widely used in precast structures, such as prestressed bridge girders and decks units, rock and earth anchoring construction, hydraulic structures and other great projects.
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Portable Prestressing Jacks| Concrete Construction
Portable prestressing jacks are used at precast plants for single-strand tensioning before concrete is poured. These jacks are self-contained units, equipped with motor, pump, ram and controls. They have maximum working capacities ranging between 45,000 and 52,000 pounds. In general, two workers are ...
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Stressing Jack | TMG
Jul 25, 2015· In July 2015, we started to deliver a series of customized Stressing Jack to some precast concrete operators. This 100 metric ton Stressing Jack works on a 200mm length stroke and it is able to perform simultaneous stressing job on 4 PC strand spaced 50mm apart.. TMG successfully helped the operators to reduce up to 75% of their mapower cost and also increased the production cycle time.
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Strand jack - Wikipedia
A strand jack (also known as strandjack) is a jack used to lift very heavy (e.g. thousands tons or more with multiple jacks) loads for construction and engineering purposes. Strandjacking was invented by VSL Australia's Patrick Kilkeary & Bruce Ramsay in 1969 for concrete post tensioning systems, and are now used all over the world for heavy lifting, to erect bridges, offshore structures ...
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Hydraulic Tensioning Jacks - Precision-Hayes International
Hydraulic Tensioning Jacks. Precision-Hayes International manufactures stressing jacks to meet the most rigorous job demands. With proven designs that have become the industry standard, these heavy duty jacks are available in a range of capacities and configurations.
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Large Tonnage Prestress PC Strand Tensioning Stressing Jack
1, Hydraulic Strand Jack is a kind of general purpose for prestressing applied for pre-tension and post-tension of various steel strand anchors. 2, Hydraulic strand jack is widely used in precast structures, such as prestressed bridge girders and decks units, rock and earth anchoring construction, hydraulic structures and other great projects.
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Hydraulic Jacks - DSI USA - Construction and Structural
Multistrand Post-Tensioning System Hydraulic Jacks jack type 59 ... (0.5") 01 02 03 04 05 06 07 08 09 12 15 19 27 37 Mono 0.6 x HoZ 950 x x x ...
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Types of Prestressing Systems and Anchorages in
In prestressed concrete structures, prestress is introduced by stretching steel wire and anchoring them against concrete. Therefore, the prestressing systems should comprise essentially a method of stretching the steel and a method of anchoring it to the concrete. Different systems are adopted for ...
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