Podcast
Questions and Answers
What is the criterion of quality concrete in structural member design?
What is the criterion of quality concrete in structural member design?
- Flexural strength
- Compressive strength (correct)
- Tensile strength
- Shear strength
At what age are concrete specimens typically tested to determine compressive strength?
At what age are concrete specimens typically tested to determine compressive strength?
- 14 days
- 21 days
- 35 days
- 28 days (correct)
In what modes can the failure of concrete occur during compressive strength testing?
In what modes can the failure of concrete occur during compressive strength testing?
- Columnar fracture only
- Shear and splitting failure (correct)
- Flexural failure
- Tensile failure only
What is the specified minimum value for the compressive strength of concrete according to NSCP 2015 Section 401.2.2?
What is the specified minimum value for the compressive strength of concrete according to NSCP 2015 Section 401.2.2?
What is the type of loading condition used when testing 28-day-old concrete cylinders for compressive strength?
What is the type of loading condition used when testing 28-day-old concrete cylinders for compressive strength?
What is the relationship that influences the performance of a reinforced concrete member under load?
What is the relationship that influences the performance of a reinforced concrete member under load?
What is the compressive strength range of normal weight concrete at about 28 days?
What is the compressive strength range of normal weight concrete at about 28 days?
What are the disadvantages of lightweight structural concretes?
What are the disadvantages of lightweight structural concretes?
What is the main reason for using lightweight concrete?
What is the main reason for using lightweight concrete?
What type of concrete is typically used in radiation shields and counterweights?
What type of concrete is typically used in radiation shields and counterweights?
Which type of specimen shape leads to lower compressive strength values?
Which type of specimen shape leads to lower compressive strength values?
At what age does the development of strength start for normal weight concrete?
At what age does the development of strength start for normal weight concrete?
What factor can increase the strength of concrete?
What factor can increase the strength of concrete?
How do special admixtures affect concrete?
How do special admixtures affect concrete?
What effect does using a vibrator have on concrete?
What effect does using a vibrator have on concrete?
How does the curing time influence the strength of concrete?
How does the curing time influence the strength of concrete?
When is concrete typically tested for strength?
When is concrete typically tested for strength?
What happens to the compressive strength of concrete under sustained loads?
What happens to the compressive strength of concrete under sustained loads?
