Acoustic emission monitoring for assessment of prestressed concrete beams

被引：86

作者：

ElBatanouny, Mohamed K. ^{[1
]}

Ziehl, Paul H. ^{[1
]}

Larosche, Aaron ^{[1
]}

Mangual, Jese ^{[1
]}

Matta, Fabio ^{[1
]}

Nanni, Antonio ^{[2
]}

机构：

[1] Univ S Carolina, Dept Civil & Environm Engn, Columbia, SC 29208 USA

[2] Univ Miami, Dept Civil Arch & Environ Engn, Coral Gables, FL 33146 USA

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2014年 / 58卷

关键词：

Acoustic emission; Non-destructive testing; Prestressed concrete; Corrosion; Cyclic load test (CLT); IN-SITU EVALUATION; B-VALUE; SLAB SYSTEMS;

D O I：

10.1016/j.conbuildmat.2014.01.100

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Acoustic emission (AE) was used to monitor eight prestressed concrete (PC) T-shaped beams that were tested per the ACI 437 cyclic load test (CLT) method. Limited research has examined the validity of this test method for PC structures. The study aims to explore the use of AE for damage evaluation as a supplement to conventional measurements used to assess the condition of a structure based on the CLT acceptance criteria. The beams had different initial conditions: five specimens were pre-cracked and corroded to different corrosion levels while the remaining unconditioned beams served as control specimens. AE enabled to monitor the accumulation of damage during the load tests and damage quantification charts based on AE data are presented. These charts allowed determining load test failure with better sensitivity than the existing ACI 437 evaluation criteria. The charts enabled the assessment of damage regardless of the specimens' initial condition. In addition, it is shown that accurate damage source location and crack mapping can be achieved by using suitably filtered AE data. Published by Elsevier Ltd.

引用

页码：46 / 53

页数：8

共 38 条

[1] Acoustic emission characterization of the fracture process in fibre reinforced concrete [J].

Aggelis, D. G. ;

Soulioti, D. V. ;

Sapouridis, N. ;

Barkoula, N. M. ;

Paipetis, A. S. ;

Matikas, I. E. .

CONSTRUCTION AND BUILDING MATERIALS, 2011, 25 (11) :4126-4131

[2]

American Concrete Institute (ACI), 2012, 43712 ACI, P34

[3]

American Concrete Institute (ACI), 2007, 4371R07 ACI, P38

[4]

[Anonymous], 2006, American Standard for Testing and Materials, P1

[5]

Auyeung Y, 2000, ACI MATER J, V97, P214

[6]

Code A., 2011, ACI 318-11, P503

[7] Assessing damage of reinforced concrete beam using "b-value" analysis of acoustic emission signals [J].

Colombo, IS ;

Main, IG ;

Forde, MC .

JOURNAL OF MATERIALS IN CIVIL ENGINEERING, 2003, 15 (03) :280-286

[8] Predicting the ultimate bending capacity of concrete beams from the "relaxation ratio" analysis of AE signals [J].

Colombo, S ;

Forde, MC ;

Main, IG ;

Shigeishi, M .

CONSTRUCTION AND BUILDING MATERIALS, 2005, 19 (10) :746-754

[9]

ElBatanouny M, 2008, ACOUSTIC EMISSION CY

[10]

ElBatanouny M. K., 2012, EXP MECH

← 1 2 3 4 →