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shot crete spraying machine is to used to compressed air to convey the pre-dampened mix through delivery hose to the nozzle - details see: https://www.machineto.com/high-efficiency-wet-type-shot-crete-spraying-machine-10095752

Shotcrete machine /concrete spraying machine

Working principle:

Shotcrete processing machine is to use compressed air to convey the pre-dampened mix through delivery hose to the nozzle to project the material onto the sprayed surface under
high velocity, and then to form concrete support layer after the projected material coagulates and hardens.
With simple technology, special effect, economy cost, flexibility and high construction efficiency, shotcrete
technology has widely been applying in construction, railway and super highway engineering, underground
engineering, tunneling, mining operations, hydropower projects and slope stabilization, etc. and showing
prosperous future.

Types and technical parameters:

Type:	KSP-1(wet spraying)	KSP-2(wet spraying)
Output Capacity:	5m3 /h	7m3 /h
Concrete materials mix ratio:	1:3-5C/A	1:3-5C/A
Water cement ratio:	≤0.40	≤0.40
Convey Distance Max. :	Horizontal: 20m; Vertical: 30m	Horizontal: 50m; Vertical: 200m
Aggregate Size Max.:	Diameter 20mm	Diameter 20mm
Hose inner size:	Diameter 50mm	Diameter 50mm
Working pressure:	0.2-0.4Mpa	0.6-0.8Mpa
Wind Consumption:	7-8m3/min	7-8m3/min
Fluid accelerator adding capacity	0-125L/h	0-125L/h
Feeding Height	1.25m	1.25m
Snapping back rate	≤15%	≤15%
Machine side dust	≤10mg/ m3	≤10mg/ m3
Motor Power:	5.5KW	7.5KW
Work Voltage:	380V	380V
Applicable slump of concrete:	5-20mm	5-20mm
Basic chassis	Tyre/skid	Tyre/skid
Net Weight:	900KG	1000KG
Shape Size: (L x W x H):	1980 x 950 x 1300(mm)	2100 x 900 x 1250(mm)