ACI Concrete Written Examination Questions well solved 2024/2025

ACI Concrete Written Examination QuestionsWhat document produced by the concrete supplier contains information relating to identification of the concrete sample? - correct answer The delivery ticket Describe the operation of obtaining a sample for evaluation of concrete quality. - correct answer Obtaining a single grab sample at one point of discharge in as short amount of time possible. Between what two points of the mixer discharge must the concrete be sampled? - correct answer Between 10% and 90% points of discharge How is the sample obtained from the discharge stream of a mixer truck? - correct answer a) pass receptacle completely through discharge stream, OR b) completely divert discharge stream into a sample container What is the minimum size of sample to be obtained when strength test specimens are to be moulded? - correct answer 100x200 mm cylinders - 20L 150x300 mm cylinders - 30L 150x150x525 mm beams - 55L From what conditions must the concrete sample be protected from? - correct answer Wind, sun, sources of rapid evaporation, sources of contamination What must be done between taking the sample form the mixer and performing the tests? - correct answer -Transport sample to where the tests will be performed -Remix sample with shovel