Type: Ten-wire trihedral low relaxation compacted
Diameters: from 7.98 mm to 23 mm
Breaking tension: 1860-2160 n/mm2 (strength class)
Direction of lay: left
Weight of the coil from 0.5 t to 3 t with strapping steel tape
Height: 300mm — 800mm
Inner diameter: 800mm
Outer diameter: 1000-1200mm
Weight of the coil from 0.5 t to 3 t with strapping steel tape, wrapped in synthetic material
Height: 300mm — 800mm
Inner diameter: 800mm
Outer diameter: 1000-1200mm
Height: 600mm-800mm
Inner diameter: 800mm
Outer diameter: 1000-1200mm
Adhesion to the concrete К10
25% more, than K7
Tests on the bearing capacity of the reference zone:
It is not necessary to increase the concrete grade to hold the K10 strands
to hold the К10 strands, it is not necessary to increase the concrete grade
Reduction of cement
and steel consumption
SK10= SK7
σK10 + σK7 + 10%
4,3mm — wire diameter
309kN — aggregate breaking strength
5,2mm — wire diameter
279kN — aggregate breaking strength
214mm2 maximum cross-section
1860 н/mm2 —specific strength
398 кН —aggregate strength
150мм2 maximum cross-section
1860 н/mm2 —specific strength
279 кН —aggregate strength
Multiple reduction
of transfer area length
depending
on the size of the strand
Prestressing with K10 strands according to TU 259311-001-2019
Prestressing with K7 strands according to GOST R 53772-2010, ASTM A416, BS 5896 etc.
on the example of the production
of hollowcore slabs PB60.12-8
Specific consumption of materials
per 1 item:
Concrete: C20 = 0.84 m3
M500 Cement: 250kg/m3 = 210kg
K10 strand = 10kg
Concrete: C40 = 0.84 m3
M500 cement: kg/m3 = 420kg
K7 strand = 14kg
1tn of K10 PC Strand is spent on 90 items
Steel: 90pcs x (14-10) = 360kg ≈ $400
Cement: 90pcs x (500-250) = 22.5 t ≈ $1000