ACI Concrete Strength Testing Technician Sample Written Exam Questions

ACI Concrete Strength Testing Technician Sample Written Exam Questions Concrete Cylinder and Core Testing Procedures 1. Capping Procedures for Concrete Cylinders and Cores These procedures enable concrete cylinders and cores to meet the standard's requirements for: ️ D) B and C (strength and perpendicularity) A) planeness B) strength C) perpendicularity E) A and C 2. Factors Affecting the Strength of Neat Hydraulic Cement Paste The strength of the neat hydraulic cement paste used for capping cylinders depends on: ️ E) all of the above A) the water/cement ratio B) time C) its consistency D) the type of cement 3. Maximum Allowable Depth of Depressions The maximum allowable depth of depressions in the ends of cylinders that need not be sawed or ground is: ️ A) 5 mm [0.20 in.] B) 6 mm [0.24 in.] C) 8 mm [0.31 in.] D) 9 mm [0.35 in.] 4. Aligning Specimens in Testing Machine Practice C1231/C1231M contains step-by-step procedures for aligning the specimens in the testing machine through the initial application of the load: ️ A) True - Other option: B) False 5. Testing Method for Molded Cylinders or Cores This test method consists of applying a compressive axial load to molded cylinders or cores at a rate that is within a prescribed range until failure occurs: ️ A) True - Other option: B) False 6. Percent Error for Loads in Testing Machine The percent error for loads used in the testing machine should not exceed: ️ C) ±0.5% of the indicated load A) ±0.05% B) ±1.0% D) ±1.5% E) ±2.0% 7. Measurements for Width, Depth, and Line of Fracture To determine the average width, depth, and line of fracture location of the specimen, you should take: ️ B) 3 measurements across each dimension A) 2 C) 4 D) 5 8. Reporting Average Width and Depth The final report should include both the average width and depth to the nearest: