ACI Concrete Bundled Exams with complete solution

These procedures for capping enable concrete cylinders and cores to meet the standard's requirements for: a) planeness b)strength c) perpendicularity d) B and C e) A and C - Answer-E) The strength of the neat hydraulic cement paste used for capping cylinders depends on: a) the water/cement ratio...

It is important that the ____________ __________ read and understand project specifications. - Answer-finisher foreman If the crew can place and finish 100 yd3 of concrete per hour, the producer's delivery rate should be about _____ yd3 per hour. - Answer-100 Concrete is sold by the ton? - Answ...

For concrete with aggregates less than 3 inches, the thermometer must remain in the fresh concrete sample a minimum of 5 minutes or until the temperature reading stabilizes. (T or F) - Answer-False (2-5 minutes) The temperature measuring device must be accurate to within 0.1 degree. (T or F) - An...

Sampling should be done very carefully because it is as important as ____________. - Answer-Testing What are the four sources from which field samples can be obtained? - Answer-Conveyer belts Transport units Roadways Stockpiles Sampling containers for aggregate samples should be made so that th...

1. Which of the following statements is false? Aggregates are sampled: A. For the acceptance or rejection of materials B. For the control of operations at the site of use C. For preliminary investigation of the potential source of supply D. For the control of the product at the source of supply ...

1. Which of the following statements is false? Aggregates are sampled: A. For the acceptance or rejection of materials B. For the control of operations at the site of use C. For preliminary investigation of the potential source of supply D. For the control of the product at the source of supply ...

Q1. Start molding specimens for strength tests within 30 minutes after fabricating the composite sample. A. True B. False - Answer-B. False ASTM C172 -Para (4.1.2) - Start molding. specimens for strength tests within 15 min after fabricating the composite sample. Q2. The maximum allowable tim...

These procedures for capping enable concrete cylinders and cores to meet the standard's requirements for ________ and _________. - Answer-Planeness, perpendicularity Equipment needed for the capping process includes capping _____ , _____devices, and ______ pots. - Answer-Plates, alignment, melti...

For 4x8 cylinders, how many layers and rod strokes to properly consolidate the concrete? - Answer-2 layers, 25 strokes For 6x12 cylinders, how many layers and rod strokes to properly consolidate the concrete? - Answer- 3 layers, 25 rod strokes After rodding each layer, the sides of the molds sho...

ASTM C31 / C31M-06 - Answer-Standard Practice for Making, Curing, Protecting & Transporting Test Specimens in the Field Conditions. ASTM C1064 /C1064M-05 - Answer-Standard Test Method for Temperature of Freshly Mixed Hydraulic-Cement Concrete ASTM C172 -07 - Answer-Standard Practice For Sampling...

The temperature measuring device shall be cable of accurately measuring the temperature of freshly mixed concrete to 1°F throught a range of____________________________. - Answer-30 - 120°F It is acceptable to measure the temperature of freshly mixed concrete in the forms provided? - Answer-The...

The method of determining air content of concrete containing lightweight aggregate is the pressure method - Answer-False. Relatively dense Is the following statement true or false? When making a test cylinder from concrete being used in construction, the field technician must also measure the slu...

The sensor of the temperature measureing device shall be submerged a minimum of ____ in - Answer-3 (75mm) The temperature measureing device shall have a capacity of measuring temperature of freshly mixed conrcrete to +-_____ degrees F throught a range of _____ - Answer-1(.5 degrees C), 30-120 (0-...

The end of the temperature sensing portion of the temperature measuring device is submerged a minimum of __mm [__in.] into the freshly mixed concrete. - Answer-77mm /3in. The temperature measuring device shall be capable of accurately measuring the temperature of freshly mixed concrete to +- __C ...