Changes in lung function after working with the shotcrete lining method under compressed air conditions

Shotcrete techniques under compressed air are increasingly applied in the construction of tunnels. Up to now little is known about the influence of shotcrete dusts on the function of the lung. The lung function of 30 miners working with shotcrete under compressed air (before and after one shift) was...

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Bibliographic Details
Published in:British Journal of Industrial Medicine 1989-02, Vol.46 (2), p.128-132
Main Authors: Kessel, R, Redl, M, Mauermayer, R, Praml, G J
Format: Article
Language:English
Subjects:
Adult
Air Pressure
Air sampling
Airway resistance
Applied physiology
Biological and medical sciences
Cements
Compressed air
Construction Materials - adverse effects
Control groups
Dust - adverse effects
Human physiology applied to population studies and life conditions. Human ecophysiology
Humans
Lung - physiopathology
Lung Diseases - chemically induced
Lung Diseases - physiopathology
Lungs
Male
Medical sciences
Middle Aged
Occupational Diseases - chemically induced
Occupational Diseases - physiopathology
Occupations
Pulmonary Ventilation
Respiratory Function Tests
Shotcrete
Time Factors
Tunnels
Vital capacity
Working conditions
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Summary:Shotcrete techniques under compressed air are increasingly applied in the construction of tunnels. Up to now little is known about the influence of shotcrete dusts on the function of the lung. The lung function of 30 miners working with shotcrete under compressed air (before and after one shift) was measured. They carried personal air samplers to assess the total dust exposure. Long term effects were studied on a second group of 29 individuals exposed to shotcrete dusts and compressed air for two years. A significant increase of airway resistance and a significant decrease of some flow-volume parameters were found after one workshift. These changes partially correlate close to the dust exposure. After two years exposure a significant decrease of mean expiratory flow (MEF)50 and MEF25 was found. These results point to damage in the small airways and emphasise the major role of the lung function test--including the flow-volume manoeuvre for the medical examination of the workers. Additionally, they should carry filter masks.
ISSN:0007-1072
1351-0711
1470-7926
DOI:10.1136/oem.46.2.128