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NATM Style Shotcrete Stress (VW)

NATM Style Shotcrete Stress (VW)

The Model 4850 NATM Style Shotcrete Stress Cells are designed for the measurement of tangential (4850-1) and radial (4850-2) stresses in shotcrete tunnel linings. The cells consist of two rectangular steel plates welded together around the periphery with a de-aired fluid occupying the space between the plates. A short tube connects the cell to a vibrating wire pressure transducer. A prestressing tube is provided for expanding the cell after the concrete has cured. Cells of this type are also used for measurements of stress in mass concrete.

    NATM Style Shotcrete Stress (VW)

Description

The Model 4850 NATM Style Shotcrete Stress Cells are designed for the measurement of tangential (4850-1) and radial (4850-2) stresses in shotcrete tunnel linings. The cells consist of two rectangular steel plates welded together around the periphery with a de-aired fluid occupying the space between the plates. A short tube connects the cell to a vibrating wire pressure transducer. A prestressing tube is provided for expanding the cell after the concrete has cured. Cells of this type are also used for measurements of stress in mass concrete.


Spesification

Standard Ranges¹ 4850-1 | 7.5, 20, 35 MPa
4850-2 | 2, 3, 5 MPa
Over Range
150% F.S.
Resolution 0.025% F.S.
Accuracy²
±0.1% F.S.
Temperature Range¹ −20°C to +80°C
L × W × H¹                       4850-1 | 200 × 100 × 6 mm
4850-2 | 250 × 150 × 6 mm                       

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Jl. Radin Inten II No. 61B Duren Sawit - Jakarta 13440
0815 614 1954 0817 921 7081 0813 9929 1909
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