Unbonded steel strand or monostrand

Category:

PC strand

Non-bonded prestressed steel strands are suitable for cast-in-place concrete floor slabs, geotechnical anchoring, sewage treatment tanks, hydropower station dams, large-load prestressed beams and other special structural engineering of large-span and large-bay buildings. It has the characteristics of no need to reserve holes, no need for secondary grouting, and random curved reinforcement, which has the characteristics of simple construction and material saving. No bonding means that after the prestressed steel strand is prestressed, there is no adhesion between the prestressed steel strand and its reserved hole in the concrete component, which can slide, and the prestress is all transmitted by the anchors at both ends. In order to ensure that there is no adhesion between the prestressed steel strand and its reserved aperture in the concrete component, there is no sticking

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Brief introduction

1.Prestressed steel strand: mainly used for prestressed concrete structure, rock and soil anchoring and other purposes, according to the twisted structure is divided into 1*2, 1*3, 1*7 three categories. According to its stress relaxation performance, it is divided into two levels: grade I relaxation and class II relaxation.

2.According to its stress relaxation performance, it is divided into two levels: grade I relaxation and class II relaxation. It is mainly used to make large, medium and small prestressed concrete components of various structural shapes that are successively tensioned, such as: railways, highways, urban viaducts, hydropower dams, nuclear power plants and large-space large-span precast components and seismic structures.

3.It can save steel, improve the strength of components, reduce the weight of components, and is an internationally recognized new building material. Qingdao Ruisong Steel Cable Company can produce the following specifications of steel stranded products for you:

APPLICATION & ACHIEVEMENT

PC strand and wire are mainly used to make large, medium and small concrete components of various shapes that are stretched successively, such as railways, highways, urban viaducts and long-span prefabricated components and earthquake-proof structures, etc.They can save steel and reduce the weight of components. It is an internationally recognized new building materials.

QUALITY INSPECTION

(1) Wire rod
Raw material for steel wire products is supplied by steel mill. Steel mils make wire rod by hot rolling process from bilet
(2) Surface treatment
Descaling wire rod removes rust and scales on the surface of wire. Surface coating wire rod facilitates drawing
(3) First Drawing
Descaled and surface coated wire rod is brought to 1st drawing machine to draw to required diameter and to give mechanical properties suitable for application.
(4) Stranding
Positioning the wires within the strands
(5) Stabilizing
Heat treatment process using high frequency relieves and removes stress.