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

Lawrence, Jonathan and Li, Lin (2000) A comparative study of the surface glaze characteristics of concrete treated with CO2 and high power diode lasers. Part II: mechanical, chemical and physical properties. Materials Science & Engineering A. Structural Materials: Properties, Microstructure and Processing, 287 (1). pp. 25-29. ISSN 0921-5093

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Full text URL: http://dx.doi.org/10.1016/S0921-5093(00)00826-1

Abstract

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

Item Type:Article
Additional Information:The hardened ordinary Portland cement (OPC) surface layer of concrete which was glazed using a CO2 and a high power diode laser (see Part I of this paper) has been tested in order to determine the mechanical, chemical and physical characteristics of the glazes. The work showed that the generation of the surface glazes resulted in improved mechanical, chemical and physical properties over the untreated OPC surface of concrete. However, differences in the performance of the CO2 and HPDL generated glazes were observed. These are believed to be due to the differences in the morphology and microstructure of the glazes generated as a result of the differing beam absorption characteristics of the two lasers. Life assessment testing revealed that the laser glazed OPC surfaces effected an increase in actual wear life of 1.3 to 17.7 times over the untreated OPC surface of concrete depending upon the corrosive environment.
Keywords:CO2 laser, high power diode laser, concrete, cement, surface glazing, properties
Subjects:H Engineering > H680 Optoelectronic Engineering
H Engineering > H700 Production and Manufacturing Engineering
Divisions:College of Science > School of Engineering
ID Code:3193
Deposited By:INVALID USER
Deposited On:12 Aug 2010 16:28
Last Modified:13 Mar 2013 08:44

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