Surface glazing of concrete using a 2.5 kW high power diode laser and the effects of large beam geometry

Lawrence, Jonathan and Li, Lin (1999) Surface glazing of concrete using a 2.5 kW high power diode laser and the effects of large beam geometry. Optics & Laser Technology, 31 (8). pp. 583-591. ISSN 0030-3992

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Full text URL: http://dx.doi.org/10.1016/S0030-3992(00)00003-7

Abstract

Interaction of a 2.5 kW high power diode laser (HPDL) beam with the ordinary Portland cement (OPC) surface of concrete has been investigated, resulting in the generation of a tough, inexpensive amorphous glaze. Life assessment testing revealed that the OPC glaze had an increase in wear life of 1.3 to 14.8 times over an untreated OPC surface, depending upon the corrosive environment. Also, variations in the width of the HPDL beam were seen to have a considerable affect on the melt depth. Furthermore, the maximum coverage rate that it may be possible to achieve using the HPDL was calculated as being 1.94 m2/h. It is a distinct possibility that the economic and material benefits to be gained from the deployment of such an effective and efficient large area coating on OPC could be significant.

Item Type:Article
Additional Information:Interaction of a 2.5 kW high power diode laser (HPDL) beam with the ordinary Portland cement (OPC) surface of concrete has been investigated, resulting in the generation of a tough, inexpensive amorphous glaze. Life assessment testing revealed that the OPC glaze had an increase in wear life of 1.3 to 14.8 times over an untreated OPC surface, depending upon the corrosive environment. Also, variations in the width of the HPDL beam were seen to have a considerable affect on the melt depth. Furthermore, the maximum coverage rate that it may be possible to achieve using the HPDL was calculated as being 1.94 m2/h. It is a distinct possibility that the economic and material benefits to be gained from the deployment of such an effective and efficient large area coating on OPC could be significant.
Keywords:High power diode laser, concrete, ordinary Portland cement, surface, glazing
Subjects:H Engineering > H680 Optoelectronic Engineering
H Engineering > H700 Production and Manufacturing Engineering
Divisions:College of Science > School of Engineering
ID Code:3197
Deposited By:INVALID USER
Deposited On:09 Aug 2010 14:54
Last Modified:13 Mar 2013 08:44

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