6505r5 - Behavior of Concrete under Various Stress States 1...

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CGN 6505 REVIEW QUESTIONS - SET NO. 5 Spring 2010 Strength Tests on Concrete 1. Describe the general requirements for the concrete specimens in the standard compressive strength test. 2. Describe the effects of (A) specimen diameter, (B) length-to-diameter ratio & (C) moisture condition on the results of the standard compressive strength test on concrete. 3. Describe the general requirements for the concrete specimen in the standard flexural strength test. 4. Describe the two common methods for flexural strength test on concrete. 5. Decribe the general relationships among (A) the compression strength, (B) flexural strength and (C) tensile strength of concrete. 6. Describe the effects of the following factors on the strength of concrete: (A) Porosity of concrete (B) Water-cement ratio (C) Air entrainment (D) Aggregate size (E) Aggregate grading (F) Aggregate type (G) Curing condition (H) Curing temperature (I) Casting temperature
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Unformatted text preview: Behavior of Concrete under Various Stress States 1. Describe the stress-strain behavior of concrete under (A) uniaxial compression, (B) uniaxial tension, (C) biaxial compressive stresses, (D) biaxial tensile stresses, and (E) combined tension-compression biaxial stresses. 2. What is the relationship between shear strength and compressive strength of concrete? Elastic Moduli of Concrete 1. Describe the meaning of the following elastic moduli and how they are determined: (A) Secant modulus (B) Tangent modulus (C) Chord modulus (D) Dynamic modulus 2. Describe how the elastic modulus is determined in the standard test for static modulus of elasticity (ASTM C469). Which modulus was determined? 3. Describe the effects of the following factors on the elastic modulus of concrete: (A) Moisture condition (B) Aggregate properties (C) Properties of hydrated cement paste (D) Properties of transition zone...
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This note was uploaded on 05/26/2011 for the course CGN 6505 taught by Professor Mang during the Spring '11 term at University of Florida.

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6505r5 - Behavior of Concrete under Various Stress States 1...

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