NURSING TEST

ACI Sampling Freshly Mixed Concrete Questions and Answers This practice covers sampling from five different types of equipment. What are they? Revolving Drum; Paving; Open Top; Continuous; Stationary The elapsed time between obtaining the first and final portions of a composite sample shall not exceed how long? 15 min Should portions of a composite sample be thoroughly remixed before beginning tests on the sample Yes How long should tests for slump, temperature, and ai...

ACI Density (Unit Weight) and Yield of Fresh Concrete. Questions and Answers correct The length of the tamping rod used in this test method is ____________________________________________________________. at least 4 in taller than the measure, but no more than 24 in. What is the required shape of the tamping end of the rod? round hemispherical What is the required minimum frequency of the vibrator used in this test method? 9000 vibrations per min (150 Hz) The outside d...

ACI Concrete Field Test Questions and Answers correct The concrete sample(s) must always be protected from All of the above (Sun, Wind, Contamination) When concrete contains aggregate particles larger than permitted, the concrete sample must be Wet sieved The maximum allowable time for obtaining the first and final portion of the composition is 15 minutes Slump must be started within _____ after obtaining the final portion of the composite sample 5 minutes When...

ACI Certification Ch. 3- Preparation before placing concrete Questions and Answers correct true or false Granular sub-bases for slabs on ground can be compacted with sheeps foot rollers. false In cold weather, the sub grade soil must be free of ____________ before concrete placing begins. frost true or false Before a concrete slab on ground is placed under severe drying conditions, that threaten plastic shrinkage cracking, water should be sprayed on the sub grade until puddl...

ACI Certification - Concrete Field Testing Technician Grade 1 Questions and Answers correct Sampling Fresh Concrete: Collecting a representative sample of concrete to be tested is as important as executing the test methods to obtain _______________________________. Accurate results (Reference 1.2) Sampling Fresh Concrete: This practice covers sampling from four types of equipment , which are ________________________________, ________________________, ____________________________________...

ACI Grade 1 Field Testing Certification Practice Test – Irving Questions and Answers correct 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) False (2-5 minutes) The temperature measuring device must be accurate to within 0.1 degree. (T or F) The temperature measuring device shall have a capacity of measuring temperature of freshly mixed concre...

ACI Concrete Field Testing Technician - Grade I Questions and Answers 100- correct Volume of measure = 0.25 cf Mass of empty measure = 8.83 lbs After test, mass of measure and concrete = 43.82 lbs Total mass of all materials batched = 26,000 lbs Design volume = 7.00 cubic yards Theoretical density on an air free basis = 151.4 pcf Calculate: (a) Unit weight (b) Yield (in cubic yards) (c) Relative yield (d) Air content (%) (a) 139.96 pcf (b) 6.88 cubic yards (c) 0.98 (d) 7.6% ...

ACI Concrete field testing technician- grade 1 sample exam Questions and Answers correct The method of determining air content of concrete containing lightweight aggregate is the pressure method. True or False False When making a test cylinder from concrete being used in construction, the field technician must also measure the slump of the concrete. True or False True While the technician is checking the slump of the concrete, there is a decided falling away or shearing off of...

ACI Certification Concrete Field Testing Tech Grade 1 Questions and Answers correct The end of the temperature sensing portion of the temperature measuring device is submerged a minimum of ___________ into FRESHLY mixed concrete. 75 mm (3 in) The temperature measuring device shall be capable of accurately measuring the temperature of freshly mixed concrete to _______________ throughout a range of ____________ C to _____________ C and _____________ F to ___________ F. 0.5 C (1 F), 0-50 ...

ACI Concrete Flatwork Finishing Certification Questions and Answers correct When is air-entrained concrete used? When it will be exposed to freezing and thawing cycles How is concrete sold? Sold in what units? By volume in cubic yards or cubic meters Concrete should be completely discharged: Within 1 1/2 hours Who should attend the pre-construction meeting? Finisher foreman Type I Concrete Normal or ordinary use What is type I concrete typically used on? ...

ACI Concrete- Section 2 Questions and Answers correct Sampling by the practice covers procedures for obtaining representative samples, on which tests are to be performed to determine _________ with quality requirements of the specifications under which the concrete is furnished. Compliance This practice covers sampling from five types of equipment, which are ______, ______, ______, ______, and ______. Stationary mixers, paving mixers, revolving drum mixers, continuous mixers, and open ...

ACI Concrete Written Examination Questions & Answers correct What document produced by the concrete supplier contains information relating to identification of the concrete sample? The delivery ticket Describe the operation of obtaining a sample for evaluation of concrete quality. 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? Between 10% and 90% points of...

ACI Concrete Field Testing Technician - Grade I - C173/C173M Questions and Answers correct The volumetric method of determining air content of concrete can be used on concrete containing what types of aggregate? ______ All types of aggregate What are the requirements for the tamping rod used in this test method? Steel or plastic, with a hemispherical tip on one or both ends, at least 4 in. [100 mm] taller than the height of the measure but no more than 24 in. [600 mm] in overall length...

ACI - Concrete Strength Testing Technician (CSTT) Questions and Answers correct Standard Practice for Capping Cylindrical Concrete Specimens ASTM C617 Procedures for capping enable concrete cylinders and cores to meet C617's practice requirements for___ and___. C617 perpendicularity, planeness C617, 3.1 ____ ____ can be made of glass, machined metal, polished granite, or diabase. C617 Capping plates C617, 4.1 Sulfur caps can be formed against ___ or___ plates....

ACI Concrete Field Testing Technician- Grade I Questions and Answers correct Section 1: Temperature of Freshly Mixed Hydraulic-Cement Concrete C1064 The end of the temperature sensing portion of the temperature measuring device is submerged a minimum of _____ into the freshly mixed concrete. 3 inches The temperature measuring device shall be capable of accurately measuring temperature of freshly mixed concrete to _____, throughout a range of _____. +/- 1 °F 30 °F to 120 °F ...

ACI Concrete Oral Exam Questions and Tests Questions and Answers correct What must occur before a sample of concrete can be taken from a revolving drum mixer? All Of The Water Must Be Added To The Mixer Describe the different procedures that can be used to collect a sample of concrete from a stationary or revolving drum mixer. Repeatedly Pass A Receptacle Through The Entire Discharge Stream Completely Divert The Discharge Stream Into A Sample Container What are the required s...

ACI Concrete Field Testing Technician - Grade 1 (Math Formulas) Questions and Answers correct Density Calculation (Mc&m-Mm)/Vm=Density in lb/ft³ Density Calculation (example) (90.2 lb - 19.1 lb) / 0.500 ft³ = 142.2 lb/ft³ Concrete Yield Total mass of all materials batched (lb) / Density of concrete (lb/ft³) x 27 (ft³/yd) Concrete Yield (example) 34,700 lb / 141.9 lb/ft³ x 27 ft³/yd = 9.06 yd³ Relative Yield Actual Yield (yd³) / Design Yield (yd³) = ...

ACI Written Exam Questions and Answers correct The sensor of the temperature measureing device shall be submerged a minimum of ____ in 3 (75mm) The temperature measureing device shall have a capacity of measuring temperature of freshly mixed conrcrete to +-_____ degrees F throught a range of _____ 1(.5 degrees C), 30-120 (0-50 degrees C) The temperature measuring device shall be calibrated____, or whenever there is a question of _____ annually, accuracy The temp of con...

ACI CONCRETE FIELD TESTING TECHNICIANS GRADE 1 (IN CANADA) Questions and Answers correct The standard practice describes the _____ _____ and _____ required to obtain a representative sample of fresh concrete and to assess its tractability to the structure it represents. procedures, location and sample size The procedures used in sampling shall include the use of every precaution that will assist in obtaining samples that are truly representative of the _____and _______ of the concrete. ...

ACI Concrete Strength Testing Technician CP-19 (14) Questions and Answers correct These procedures for capping enable concrete cylinders and cores to meet the standard's requirements for ________ and _________. Planeness, perpendicularity Equipment needed for the capping process includes capping _____ , _____devices, and ______ pots. Plates, alignment, melting Plates for neat cement and high strength gypsum plaster caps should be made of _____, _____, _____ or _____. Glass...