Cslb Concrete C8 License Practice Test #2 Study Guide Questions And Correct Answers

What could be the result from over vibration while pouring the concrete? {Ans: Segregation}What is/are the example(s) of the pozzolan materials used for pozzolana cement? {Ans: ALL OF THESE! -Silica fume -Fly ash -Rice hull ash}What is the purpose of using SCM in concrete other than meeting workability requirements? {Ans: To avoid emissions: The cement production is responsible for 7% of the greenhouse gas emissions (GHG).}The cement type that is recommended for rapid construction or cold weather is __________________. {Ans: Type |||}The amount of free water used in concrete shall not exceed ____________ pounds per cubic yard of concrete. {Ans: 310 Explanation: If the SCM are added, it can be increased to 20 pounds per each required 100 pounds of cementitious material in excess of 550 pounds per cubic yard.}What is NOT a key purpose in using SCM in concrete? {Ans: Short term curing period}