Efficiency of concrete removal with a pulsed Nd:YAG laser

被引：9

作者：

Savina, M

Xu, ZY

Wang, Y

Reed, C

Pellin, M

机构：

[1] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA

[2] Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA

[3] Argonne Natl Lab, Technol Dev Div, Argonne, IL 60439 USA

[4] Argonne Natl Lab, Div Mat & Chem Sci, Argonne, IL 60439 USA

来源：

JOURNAL OF LASER APPLICATIONS | 2000年 / 12卷 / 05期

关键词：

laser ablation; concrete; cement; decontamination;

D O I：

10.2351/1.1309551

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The mechanism and efficiency of ablating concrete surfaces with a pulsed Nd:YAG laser were studied. Ablation efficiency and material removal rates were determined as functions of irradiance and pulse overlap. The ablation mechanism was dominated by fragmentation and disaggregation of the concrete. The ablation efficiency was insensitive to peak laser irradiance over a range from 0.2 to 4.4 MW/cm(2). Excessive pulse overlap (>60%) caused a significant decrease in ablation efficiency by inducing melting. In concrete samples, the cement phase of the material responds in various ways to the laser energy, including disaggregation, melting, and vaporization, but the aggregate portion (sand and rock) mostly fragments. The ablation effluent therefore consists of both micron-size aerosol particles and chunks of fragmented aggregate material. (C) 2000 Laser Institute of America. [S1042-346X(00)00305-3].

引用

页码：200 / 204

页数：5

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[2]

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[3]

JOHNSTON EP, 1998, ICALEO 98 LAS I AM A, V85, P210

[4]

LI L, Patent No. 3079347

[5] Pulsed laser ablation of cement and concrete [J].

Savina, M ;

Xu, ZY ;

Wang, Y ;

Pellin, M ;

Leong, K .

JOURNAL OF LASER APPLICATIONS, 1999, 11 (06) :284-287

[6]

SAVINA MR, 1998, ICALEO 98 LAS I AM A, V85, P219

[7]

Taylor H.F.W., 1964, CHEM CEMENTS, V1

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