000003601 001__ 3601
000003601 005__ 20141118153353.0
000003601 04107 $$acze
000003601 046__ $$k2006-05-15
000003601 100__ $$aTran, Nam Thanh
000003601 24500 $$aInvestigation of Poisson's ratio of early age concrete

000003601 24630 $$n12.$$pENGINEERING MECHANICS 2006
000003601 260__ $$bInstitute of Theoretical and Applied Mechanics, AS CR, v.v.i., Prague
000003601 506__ $$arestricted
000003601 520__ $$2eng$$aFor an analysis of a concrete structure subjected to dynamic loading at early ages, one needs to possess reliable values of mechanical parameters, such as modulus of elasticity and Poisson’s ratio. In case of solidifying and further hardening concrete, the lateral deformation needs to be measured with a contact-free method due to the soft consistency of solidifying and hardening concrete. Some results have been already obtained with an image-analysis-based measuring method, however its use is limited, again, due to the consistency of solidifying and hardening concrete as it contains a large amount of free water, which is squeezed out of the specimen when loaded and thus changes conditions for the measurement. This paper discusses the nature of this issue and proposes possible measures to reduce its effect on the quality of measurement. 

000003601 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000003601 653__ $$a

000003601 7112_ $$aENGINEERING MECHANICS 2006$$cSvratka (CZ)$$d2006-05-15 / 2006-05-18$$gEM2006
000003601 720__ $$aTran, Nam Thanh$$iKohoutková, A.$$iŠtemberk, P.
000003601 8560_ $$ffischerc@itam.cas.cz
000003601 8564_ $$s225356$$uhttps://invenio.itam.cas.cz/record/3601/files/Tran-175-PT.pdf$$y
             Original version of the author's contribution as presented on CD, , paper No. 175.
            
000003601 962__ $$r3410
000003601 980__ $$aPAPER