Post-tensioned unbonded prestressed concrete bar is suitable for cast-in-place concrete of long-span and wide buildings, large load prefabricated beam and other construction.
No need leaving room for future expansion and no need grouting, convenient construction, material-saving, bended easily, etc.
1) unbonded P.C.strand Nor.Dia.(mm):Φ12.0;Φ 15.0;Φ15.24;Φ15.70
2) unbonded P.C. weir bunch Nor. Dia(mm):Φ12.0;Φ15.0(5)
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Specification
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Tensile strength(Mpa)
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Section area (mm²)
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Grease mass per meter (g/m)
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Minimum thickness of coat(mm)
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Friction factor (μ)
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Effect modulus(K)
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Mass per meter (kg/m)
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1×7-Φ12.70
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1720
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98.7
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43
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0.8
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0.04-0.1
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0.003-0.004
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0.875
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1860
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1960
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1×7-Φ15.20
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1570
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140
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50
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1
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0.04-0.1
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0.003-0.004
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1.21
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1670
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1770
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1860
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1960
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1×7-Φ15.24
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1860
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140
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50
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1
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0.04-0.1
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0.003-0.004
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1.21
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