2371743876

6.    Zaczek-Peplinska J., Adamek A., Popielski P.: Analiza możliwości wykorzystania wyników skanowania laserowego w technicznej kontroli zapór. Monografia „Bezpieczeństwo zapór - nowe wyzwania”, IMGW, Warszawa, 2011

7.    Zaczek-Peplinska J., Falaciński P.: Evaluation of possibilities to apply laser scanning for estimation of conditions of concrete. Reports on Geodesy, No. 1 (91)/2011, ss.: 539-546;

8.    Zaczek-Peplinska J., Adamek A., Gergont K.: Analysis of Possibilities to Utilise Results of Laser Scanning in Technical Inspection of Water Dams. FIG Working Week 2012, Rzym, Wiochy, http://fig.net/, 2012

9.    PN-EN 12504-2: 2002 Badania betonu w konstrukcjach - Część 2: Badania nieniszczące - oznaczanie liczby odbicia.

POSSIBILITIES TO UTILIZE VARIATIONS IN INTENSITY OF REFLECTANCE OF A LASER BEAM FOR EVALUATION OF CONDITIONS OF A CONCRETE STRUCTURE

Summary

Periodical surveys of concrete structures, performed within geodetic monitoring, may be implemented using laser scanners. Similarly to a tacheometer, the scanner determines spatial co-ordinates (X, Y, Z) of surveyed points, specifying the distance and angles. Besides the speed of operations, the parameter, which mostly differentiates the scanner from the tacheometer, is registration of the 4^lh co-ordinate - an intensity of reflectance of the returning light signal, emitted by the scanner. The analysis of recorded values of that additional, 4^,h co-ordinate may be applied in diagnosis of conditions of structures.

The paper presents evaluation of possibilities to utilise results of laser scanning for determination of conditions of outer surfaces of construction of a water dam -variations in porosity and resistance of concrete.

Results of experimental measurements - scanning of the downstream face of the Besko (Poland) water dam using various scanners - have been analysed. Results of measurements were analysed using methods and algorithms of digital image analysis, as the ISODATA algorithm, or the algorithms applied to classification of multispectral images.

Dane autorów:

dr inż. Janina Zaczek-Peplinska e-mail: [e-mail] telefon: [phone]