Airbag for Bridge and Tunnel Construction Core Mold

Airbag for Bridge and Tunnel Construction Core Mold

The Airbag used for construction projects which is produced by adopting high strength rubber air-bag technology can replace wooden core mold when pouring air-core reinforced concrete prefabricated parts. This kind of core mold is easy to install and disassemble, and it can be cleaned repeatedly, greatly saving the work time and materials used in wooden core mold, which is suitable for large reinforced concrete structure such as buildings, bridges, tunnels, gate dams and for the pouring and construction of the wall for flood control and prevention of seepage.

Physical and Machanical Properties:

Items	Index
Terence of Thickness, mm	3.2±0.2
Hardness(Shore A)	65±5
Adhesive tension of rubber and fabric,N/25mm	≥8
Tensile strength, M pa	≥12
Elongation at break, %	≥350
300% Stretch set length, M Pa	6
Stretch for deformation ratio	≤20 %(Prevent distortion)
Suitable temperature,°C	-10~80
Appearance	No cracks, no bubbles on the surface; the length of impurities trace is not more than 3mm; the depth is not more than 1.5mm; the quantity of the trace is not more than one; the deformation is not more than 2mm.

Working Pressure Diagram:

Diameter(mm)	80	120	150	200	250	400	500	600	700	800	900	2200
Pressure(MPa)	0.12	0.10	0.08	0.07	0.05	0.04	0.035	0.03	0.027	0.026	0.025	0.005

Common Type Diagram
Round Type
220mm * 25m	250mm * 20m	390mm * 13.5m
220mm * 8.5m	260mm * 10.5m	390mm * 14m
220mm * 9m	260mm * 11m	*
Octagon Type
550mm * 360mm * 10.5m	550mm * 560mm * 17m	800mm * 560mm * 16.5m
550mm * 360mm * 11m	710mm * 550mm * 20.5m	800mm * 560mm * 17m
550mm * 460mm * 13.5m	710mm * 550mm * 21m	800mm * 710mm * 20.5m
550mm * 460mm * 14m	800mm * 460mm * 13.5m	800mm * 710mm * 21m
550mm * 560 * 16.5m	800mm * 460mm * 14m
760mm * 360mm-660mm * 360mm * 11m	760mm * 460mm-660mm * 460mm * 14m	760mm * 710mm-660mm * 710mm * 20.5m
760mm * 360mm-660mm * 360mm * 10.5m	760mm * 560mm-660mm * 560 * 16.5m	760mm * 710mm-660mm * 710mm * 21m
760mm * 360mm-660mm * 460mm * 13.5m	760mm * 560mm-660mm * 560mm * 17m
Note: We can also provide custom service as request

Other Type of Products:

Airbag for Bridge and Tunnel Construction Core Mold