The elastic properties of concrete under bi-axial loading . Unit Stress of •3-in. Cube,3 imp1e Conpres-3 ion. Ratio ofCtrenetli of8-in. Cubeto Strength\or 20532055205620572058 2800206025002655 25252640280028302805 .98 Prom the data in the table we may conclude that the compres-sive streri£^th of concrete under bi-axial loading does not differmaterially from the strength under simple compressive loading*.As mentioned above this conclusion is based on fifteen stresses and tT^enty 8-in. cube stresses. 20. Effect of Test values of b
The elastic properties of concrete under bi-axial loading . Unit Stress of •3-in. Cube,3 imp1e Conpres-3 ion. Ratio ofCtrenetli of8-in. Cubeto Strength\or 20532055205620572058 2800206025002655 25252640280028302805 .98 Prom the data in the table we may conclude that the compres-sive streri£^th of concrete under bi-axial loading does not differmaterially from the strength under simple compressive loading*.As mentioned above this conclusion is based on fifteen stresses and tT^enty 8-in. cube stresses. 20. Effect of Test values of brealcingloads are functions of the shape of the specimen, the manner oftesting and the speed at vhich load is applied. Comparisons shoul<not be too freely drawn between results obtained under test con-ditions. It is believed that the conclusions of the precedingparagraph are not deper^dent on test conditions for the followingreasons. The conclusion applies to relative strength ami not toabsolute strength. The specimens compared were cubes, made from. IGl the same batch and stored together. The same testirx^j machine,quality of Grease and speed of aiDplyinc the load r/ere employedin testLj of bi-axlally loaded cubes and simply loaded cubes. If the greased plates affected the strength of a bi-axiallyloaded specimen they affected the strength of a simply loadedspecimen as Tzell. Prom these considerations the conclusion thatthe ultimate unit stress on each loaded face of a bi-axiallyloaded cube is approximately equal to the ultimate unit stresson the face of a simply loaded cube may be considered effect of test conditions has been eliminated.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttheses, bookyear1912
