hollow prestressed concrete stretching jack for pulling stra

Jan 09, 2014 · Video on Pre-Stressing of Steel Strands Steel Wires for Reinforcement in Hollow Core Slab ... Enerpac Mono Strand Stressing Jack and ZU4 Series ... Prestressed Concrete Technology in ...

Front Pulling Jack Prestressed Concrete Hollow Hydraulic Bottle Jack , Find Complete Details about Front Pulling Jack Prestressed Concrete Hollow Hydraulic Bottle Jack,Hydraulic Jack,Bottle Jack,Hollowjack from Car Jacks Supplier or Manufacturer-Tianjin Sunwin Prestressed Technique Co., Ltd.

YDC hollow prestressed concrete hydrualic jacks Descriptions: 1. It is suitable for the tension of group anchors with 1860-2000 sizes, Φ15.24, Φ12.7 strands. 2. In some certain circumstance it can be used in the working of pushing, jacking and transforming and so on. 3. Easy to operate and used widely.

Jul 03, 2018 · Hydraulic jacks are used to pull each ½” 270 ksi Lo-Lax strand to 31,000 lbs. Strand elongation readings are taken, to ensure PCI tolerances, and then concrete is poured into the form, around the prestressed strands (figure 4). When a strand is stretched, the diameter of the strand decreases a little bit.

Dec 06, 2017 · Full operation of precast hollow core slab machine --Shuangli Building Materials Equipment Co., Ltd. - Duration: 9:22. Trailblazer 4 Precast Concrete Industry 42,267 views

There have been during the long lifespan of prestressed hollow core slabs, several methods to produce them. Today, two basic technologies make up the majority of hollowcore production – slipforming and extrusion. Both technologies are based on long casting beds where products are formed on top of 70 to 200 metre-long moulds.

Spun pole mould, prestressed. Prestressed concrete poles for advertising beams visible from a long distance, power lines, signal posts or other applications are produced at the precast concrete factory in a cost-efficient and effective manner and with consistent quality using various methods. Either pre-cut prestressing wires (also with button heads)...

Stressing of prestressed concrete is acknowledged to be a potentially high-risk activity, as it involves the use of industrial prestressing equipment that uses hydraulic rams to stretch high- yield wires and strands with forces that can be in excess of 1500 tonnes.

Multi-stressing jack TENSA M 6800 kN with 31 strands. Our product range for bridge construction includes a wide selection of stressing jacks, hydraulic units, pushing machines, anchor grips and handling equipment. Due to the decades of experience we offer rugged and long-lived machines for heavy-duty use on construction sites.

THE FREYSSINET PRESTRESSED CONCRETE COMPANY LTD. Page: 8 ANCHORAGE COUPLERS: In the construction of continuous deck bridges, it is essential to extend Prestressing cables as the construction proceeds. FPCC has a range of Multi Strand Anchorage Couplers in configuration of 12, 19 and 27 strands, for strand diameter of ½”