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Article: Shock vibration test of concrete

TitleShock vibration test of concrete
Authors
KeywordsCracking
Tensile strength
Vibration
Issue Date2002
PublisherAmerican Concrete Institute.
Citation
Aci Materials Journal, 2002, v. 99 n. 4, p. 361-370 How to Cite?
AbstractA new test method for evaluating the effects of shock vibration on concrete has been developed. In this method, shock vibrations are applied to prismatic specimens by hammering each specimen at one end in the longitudinal direction. During the test, the shock vibration applied is measured by using an accelerometer, from which the signals are first digitized and then analyzed to yield the peak particle velocity of the pure vibration component, taken herein as the intensity of the shock vibration. The short- and longterm effects on the concrete are examined by: 1) visual inspection of cracks; 2) ultrasonic tests conducted before and after the hammer impact; and 3) direct tension and equivalent cube strength tests of hammered and control specimens at the age of 28 days. Test results obtained thus far revealed that the major damage caused by shock vibration was the formation of cracks. Even when cracks were not observed on the surfaces, however, there could be significant reductions in ultrasonic pulse velocity and tensile strength, probably due to the formation of internal cracks not observable on the surface. On the other hand, the effect on compressive strength appeared to be relatively small.
Persistent Identifierhttp://hdl.handle.net/10722/71134
ISSN
2015 Impact Factor: 1.154
2015 SCImago Journal Rankings: 1.430
References

 

DC FieldValueLanguage
dc.contributor.authorKwan, AKHen_HK
dc.contributor.authorZheng, Wen_HK
dc.contributor.authorLee, PKKen_HK
dc.date.accessioned2010-09-06T06:29:12Z-
dc.date.available2010-09-06T06:29:12Z-
dc.date.issued2002en_HK
dc.identifier.citationAci Materials Journal, 2002, v. 99 n. 4, p. 361-370en_HK
dc.identifier.issn0889-325Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/71134-
dc.description.abstractA new test method for evaluating the effects of shock vibration on concrete has been developed. In this method, shock vibrations are applied to prismatic specimens by hammering each specimen at one end in the longitudinal direction. During the test, the shock vibration applied is measured by using an accelerometer, from which the signals are first digitized and then analyzed to yield the peak particle velocity of the pure vibration component, taken herein as the intensity of the shock vibration. The short- and longterm effects on the concrete are examined by: 1) visual inspection of cracks; 2) ultrasonic tests conducted before and after the hammer impact; and 3) direct tension and equivalent cube strength tests of hammered and control specimens at the age of 28 days. Test results obtained thus far revealed that the major damage caused by shock vibration was the formation of cracks. Even when cracks were not observed on the surfaces, however, there could be significant reductions in ultrasonic pulse velocity and tensile strength, probably due to the formation of internal cracks not observable on the surface. On the other hand, the effect on compressive strength appeared to be relatively small.en_HK
dc.languageengen_HK
dc.publisherAmerican Concrete Institute.en_HK
dc.relation.ispartofACI Materials Journalen_HK
dc.subjectCrackingen_HK
dc.subjectTensile strengthen_HK
dc.subjectVibrationen_HK
dc.titleShock vibration test of concreteen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0889-325X&volume=99&issue=4&spage=361&epage=370&date=2002&atitle=Shock+vibration+test+of+concreteen_HK
dc.identifier.emailKwan, AKH:khkwan@hkucc.hku.hken_HK
dc.identifier.emailLee, PKK:hreclkk@hkucc.hku.hken_HK
dc.identifier.authorityKwan, AKH=rp00127en_HK
dc.identifier.authorityLee, PKK=rp00141en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-0036665384en_HK
dc.identifier.hkuros75971en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0036665384&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume99en_HK
dc.identifier.issue4en_HK
dc.identifier.spage361en_HK
dc.identifier.epage370en_HK
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridKwan, AKH=7101738204en_HK
dc.identifier.scopusauthoridZheng, W=7403566206en_HK
dc.identifier.scopusauthoridLee, PKK=24522826500en_HK

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