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A 6 x 12-in. concrete cylinder was tested to failure. The following loads and strains were...
Stress-strain curve represents the result of 6" x 12" concrete cylinders tested in compression. From the...
Stress-strain curve represents the result of 6" x 12" concrete cylinders tested in compression. From the results determine, • The approximate load causing the specified strength of the concrete • The tensile strength of the concrete per ACI 318-14 • The modulus of elasticity of concrete, based on: a. The appropriate ACI 318-14 expression b. the ACI 318-14's Secant approach 6 5 4 Stress, ksi 3 1 O 0.001 0.003 0.004 0.002 Strain
A 6*12-in. concrete cylinder was tested under compression, and the ultimate load was calculated as 141,371.7...
A 6*12-in. concrete cylinder was tested under compression, and the ultimate load was calculated as 141,371.7 lb. Calculate the ultimate compressive strength of the cylinder in psi. A similar specimen with the same strength was initially loaded to 50 psi and strain was measured as 0.00050. After that, the specimen was loaded to 40% of its ultimate strength and the measured strain was 0.00078. Calculate the modulus of elasticity of concrete. c. Under the same loading conditions stated in part...
6. If the stresses and strains at a point in a linear elastic material are given...
6. If the stresses and strains at a point in a linear elastic
material are given by
σij = ε
⎛
⎝
⎜⎜
⎞
⎠
⎟⎟
⎛
⎝
⎜⎜
⎞
⎠
⎟⎟
=
885 154 0
154 1038 615
0 615 577
0 002 0 001 0
0 001 0 003 0 004
0 0 004 0
MPa; and ij
. .
. . .
.
respectively, determine (i) the total strain energy density in the
material, (ii) the hydrostatic...
A 200 mm x 300 The of each mm square reinforced concrete column consists of PCC and steel rebar rebar are oriented p...
A 200 mm x 300 The of each mm square reinforced concrete column consists of PCC and steel rebar rebar are oriented parallel to the longitudinal dimension of the column. The properties component are provided in the table below PCC (Matrix Phase 95% 20 GPa 24 Mg'm 20 MPa Material Steel Rebar 5% 200 GPa 7.8 Mg/m (Dis Phase % of Composite(by vol.) Modulus of Elasticity Density Failure Stress 250 MPa Determine the following: (a) (3%) Modulus of elasticity of...
Do case #4 Background: The data shown on the following page was obtained from Tension Tests...
Do
case #4
Background: The data shown on the following page was obtained from Tension Tests of 10 unknown ductile metals. For each test, various dimensions and loads were measured before and after failure. The data is a summary of readings taken during the test (loads vs extensometer readings). Purpose: To determine the stress, strain, yield stress and modulus of elasticity of a circular shaped specimen from a tension test. Directions: A. For your particular case (depending on your last...
Stress-strain curve represents the result of 6" x 12" concrete cylinders tested in compression. From the results determine, • The approximate load causing the specified strength of the concrete • The tensile strength of the concrete per ACI 318-14 • The modulus of elasticity of concrete, based on: a. The appropriate ACI 318-14 expression b. the ACI 318-14's Secant approach 6 5 4 Stress, ksi 3 1 O 0.001 0.003 0.004 0.002 Strain
6. If the stresses and strains at a point in a linear elastic
material are given by
σij = ε
⎛
⎝
⎜⎜
⎞
⎠
⎟⎟
⎛
⎝
⎜⎜
⎞
⎠
⎟⎟
=
885 154 0
154 1038 615
0 615 577
0 002 0 001 0
0 001 0 003 0 004
0 0 004 0
MPa; and ij
. .
. . .
.
respectively, determine (i) the total strain energy density in the
material, (ii) the hydrostatic...
A 200 mm x 300 The of each mm square reinforced concrete column consists of PCC and steel rebar rebar are oriented parallel to the longitudinal dimension of the column. The properties component are provided in the table below PCC (Matrix Phase 95% 20 GPa 24 Mg'm 20 MPa Material Steel Rebar 5% 200 GPa 7.8 Mg/m (Dis Phase % of Composite(by vol.) Modulus of Elasticity Density Failure Stress 250 MPa Determine the following: (a) (3%) Modulus of elasticity of...
Do
case #4
Background: The data shown on the following page was obtained from Tension Tests of 10 unknown ductile metals. For each test, various dimensions and loads were measured before and after failure. The data is a summary of readings taken during the test (loads vs extensometer readings). Purpose: To determine the stress, strain, yield stress and modulus of elasticity of a circular shaped specimen from a tension test. Directions: A. For your particular case (depending on your last...
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