Podcast
Questions and Answers
In which of the following conditions does Silica-alkali reaction NOT occur?
In which of the following conditions does Silica-alkali reaction NOT occur?
- with blended cement (correct)
- in the presence of high humidity
- in the presence of reactive aggregates
- with a cement rich in Na2O and K2O
Which of the following is NOT a consequence of rebar corrosion?
Which of the following is NOT a consequence of rebar corrosion?
- Reduction of pH of concrete pore solution (correct)
- Rebar cross section reduction
- Cover spalling
- Loss of adherence concrete-reinforcement
The carbonation factor K depends on which of the following?
The carbonation factor K depends on which of the following?
- W/C ratio (correct)
- Type of rebar
- Chlorides content
- Maximum aggregate diameter
According to ASTM C876 standard, what is the typical potential of a passive reinforcement?
According to ASTM C876 standard, what is the typical potential of a passive reinforcement?
If two different W/C ratios are obtained during mixture proportion calculations, which W/C ratio may be used?
If two different W/C ratios are obtained during mixture proportion calculations, which W/C ratio may be used?
What is a typical value of maximum corrosion penetration?
What is a typical value of maximum corrosion penetration?
Which of the following is the primary function of air-entraining agents in concrete?
Which of the following is the primary function of air-entraining agents in concrete?
Which parameter does NOT influence rebar corrosion rate?
Which parameter does NOT influence rebar corrosion rate?
When does the maximum carbonation rate in concrete occur?
When does the maximum carbonation rate in concrete occur?
What is true about chloride-induced corrosion in concrete?
What is true about chloride-induced corrosion in concrete?
What is the critical chloride threshold for carbon steel reinforced concrete structures exposed to atmosphere?
What is the critical chloride threshold for carbon steel reinforced concrete structures exposed to atmosphere?
What defines the durability of a reinforced concrete structure?
What defines the durability of a reinforced concrete structure?
What does permeation of concrete refer to?
What does permeation of concrete refer to?
