A study on acoustic emission characteristics of fly ash cement mortar under compression

Journal Article · Sat Jan 01 04:00:00 EST 1994 · Cement and Concrete Research; (United States)

DOI:https://doi.org/10.1016/0008-8846(94)90119-8· OSTI ID:6944895

Tam, M T; Weng, C C ^[1]

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1. National Chiao Tung Univ., Hsinchu (Taiwan, Province of China)

Acoustic Emission (AE) monitoring of the integrity of material has been widely regarded as a potentially new nondestructive testing method. This study is devoted to the investigation of AE characteristics of fly ash cement mortar (FACM) under uniaxial compression. The test results of 72 specimens were reported. The major experimental parameters include the AE signals, the amount of cement replaced by fly ash, compressive strength, strain and age of the FACM. The test results showed that the characteristics of the detected AE signals during the compression process contain potentially useful information for judging the stability of the specimens under compression. Good correlation between the AE signals and the major parameters of FACM was observed. Also, a study on the AE Kaiser effect showed that Kaiser effect existed in FACM up to 80% of its ultimate strength.

• OSTI ID: 6944895
• Journal Information: Cement and Concrete Research; (United States), Journal Name: Cement and Concrete Research; (United States) Vol. 24:7; ISSN CCNRAI; ISSN 0008-8846
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
42 ENGINEERING
420500 -- Engineering-- Materials Testing
ACOUSTIC EMISSION TESTING
ACOUSTIC TESTING
AEROSOL WASTES
ASHES
COMBUSTION PRODUCTS
COMPRESSION STRENGTH
FLY ASH
MATERIALS TESTING
MECHANICAL PROPERTIES
MORTARS
NONDESTRUCTIVE TESTING
RESIDUES
TESTING
WASTE PRODUCT UTILIZATION
WASTES