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A comparative study of the surface glaze characteristics of\ud concrete treated with CO2 and high power diode lasers.\ud Part II: mechanical, chemical and physical properties

By Jonathan Lawrence and Lin Li


The hardened ordinary Portland cement (OPC) surface layer of concrete which was glazed using a\ud CO2 and a high power diode laser (see Part I of this paper) has been tested in order to determine the\ud mechanical, chemical and physical characteristics of the glazes. The work showed that the generation\ud of the surface glazes resulted in improved mechanical, chemical and physical properties over the\ud untreated OPC surface of concrete. However, differences in the performance of the CO2 and HPDL\ud generated glazes were observed. These are believed to be due to the differences in the morphology\ud and microstructure of the glazes generated as a result of the differing beam absorption characteristics\ud of the two lasers. Life assessment testing revealed that the laser glazed OPC surfaces effected an\ud increase in actual wear life of 1.3 to 17.7 times over the untreated OPC surface of concrete depending\ud upon the corrosive environment

Topics: H680 Optoelectronic Engineering, H700 Production and Manufacturing Engineering
Publisher: Elsevier
Year: 2000
DOI identifier: 10.1016/S0921-5093(00)00826-1
OAI identifier:

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