File:The elastic properties of concrete under bi-axial loading (1912) (14801505743).jpg

Identifier: elasticpropertie00mill (find matches)
Title: The elastic properties of concrete under bi-axial loading
Year: 1912 (1910s)
Authors: Millard, Floyd Hays
Subjects: Concrete Theses
Publisher:
Contributing Library: University of Illinois Urbana-Champaign
Digitizing Sponsor: University of Illinois Urbana-Champaign

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hree later tests and it is of no consequence whether theyare dropped or kept. In comprossion specimen 2051 the ratio of the unit deforma-tion on cross to that on the arm, as determined from the stress-deformation curves, varied from 0.S2 to 0.S9 and averaged 0.63for the test. The very small variation of this ratio with thestress at loads higher than the first 11. evident. The values of the ratio of the deformation on the cross tothe deformation on the arm of 2052 varied from 0.78 to O.GO,which is a greater variation than is found in the other specimensof this kind, Tlie average for the test was 0.69. The test of 2053 indicated that the compressive deformationon the cross varied from 0.64 to 0.78 times that on the arm,and averaged 0.68 for the test. A summary of the ratios of the deformation on the crossto the deformation on the arm as found in these tests is givenin Table IX. Averages have been computed at each 200 lb. persq.in. of stress and also for the entire test of each specimen.
Text Appearing After Image:
Table IX Connpneasiom Specinnens 205Q 2 051,2.052. and 20S3 Sonnnnor-y of Rq+ios of D efornnai-lom or-> theCro53 to Deformation on the Arm. ^ni t>5t ress D eformofi on on CrossDefomnotion on Arm £1 Oo 1 2 Oo2 2055 A Average I80O leoo I400 .62 .64 .65 (200 .70 ,62 .60 .64 .64 lOOO .60.76 .65 .64 .64 -65 aoo .54.75 .63 .66 .65 .65 eoo .55.78 .62 12. ,66 .66 -400 .55.79 .62 .76 .7 1 .69 200 .67.78 .69 .78 .78 .74 Averqge 58.74 .e>3 .69 .68 .66 I

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