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Kim, Jae Hong
Research Group for Concrete Structures and Materials
Research Interests
  • Mechanics of Concrete, Rheology, Structural Analysis, Construction Performance
  • Rheological investigation for the flow of fresh concrete
  • Multiscale material characterization of suspension

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Atomic Force Acoustic Microscopy to Measure Nanoscale Mechanical Properties of Cement Pastes

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dc.contributor.author Kim, Jae Hong -
dc.contributor.author Balogun, Oluwaseyi -
dc.contributor.author Shah, Surendra P. -
dc.date.accessioned 2014-11-05T02:04:01Z -
dc.date.available 2014-11-05T02:04:01Z -
dc.date.created 2014-11-04 -
dc.date.issued 2010 -
dc.identifier.citation TRANSPORTATION RESEARCH RECORD, v.2141, no., pp.102 - 108 -
dc.identifier.issn 0361-1981 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/8236 -
dc.description.abstract The measurement of elastic properties at the nanoscale is a prerequisite to building a foundation for nanomechanics applications. At present, nanoindentation is widely used to measure the properties of elasticity. Under this method, a sample is indented with a rigid probe and the resistant force of the indentation is measured. The reduced modulus measured on the basis of the resistant force and the indentation depth is then converted to the elastic modulus of the sample. However, its spatial resolution, the distance between two consecutive locations of measurement, is limited to about 5 pm because of the area of the indented tip. Ultrasonic atomic force microscopy is an alternative method of attaining spatial resolution at the nanometer level. It uses information based on the vibrations transferred from the piezoelectric actuator at the bottom of a sample to the cantilever contacting the top surface of the sample. The cantilever makes contact with a relatively small force; as a consequence, it decreases the contact area and improves the spatial resolution. The application of atomic force acoustic microscopy to a cementitious material is described, and the results of the measurement of the elastic modulus of a cement paste are presented. -
dc.description.statementofresponsibility open -
dc.language ENG -
dc.publisher NATL ACAD SCIENCES -
dc.subject Alternative methods -
dc.subject Atomic force acoustic microscopy -
dc.subject Cement paste -
dc.subject Cementitious materials -
dc.subject Contact areas -
dc.subject Elastic properties -
dc.subject Indentation depth -
dc.subject Nano scale -
dc.subject Nanometer level -
dc.subject Nanoscale mechanical properties -
dc.subject Reduced modulus -
dc.subject Resistant force -
dc.subject Spatial resolution -
dc.subject Top surface -
dc.subject Ultrasonic atomic force microscopy -
dc.title Atomic Force Acoustic Microscopy to Measure Nanoscale Mechanical Properties of Cement Pastes -
dc.type ARTICLE -
dc.identifier.scopusid 2-s2.0-78651333201 -
dc.identifier.wosid 000277673200018 -
dc.type.rims ART -
dc.description.wostc 1 *
dc.description.scopustc 1 *
dc.date.tcdate 2015-05-06 *
dc.date.scptcdate 2014-11-04 *
dc.identifier.doi 10.3141/2141-17 -
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