ACI Certification Section 7 Exam | Comprehensive Questions and Answers Latest Updated 2024, Exams of Construction

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ACI Certification Section 7 Exam | Comprehensive Questions and Answers Latest Updated

2024/2025 With 100% Verified Solutions

making, curing, protecting, transporting - ✔✔Practice C31/C31m gives standardized requirements for ______, _________ , ________ and _________. 5/8 plus or minus 1/16" - ✔✔For cylinders with a diameter of 150 mm [6 in] or greater, the tamping rod must be a round, straight steel rod with a diameter of ... 9,000 vibrations per minute - ✔✔The minimum frequency of an internal vibrator used in this procedure is ... metal pan, wheelbarrow, clean nonabsorbent mixing board - ✔✔The container for obtaining the concrete sample used in this procedure can be a ... 2 inches - ✔✔A 150 by 300 mm [6 by 12 in.] cylinder mold can be used for concrete containing aggregate with particles not exceeding _________ in size, without the need for wet sieving the concrete. C172 - ✔✔The sample of concrete used in molding test specimens must be obtained in accordance with what ASTM practice? slump, air content, temperature - ✔✔When strength specimens are to be made, what three other tests must be made? False - ✔✔After molding test specimens, you should wait two hours before moving them to the location of initial storage. True or False. 1/4" per ft - ✔✔The supporting surface on which specimens are stored shall be level within ... Vibration - ✔✔For concrete with a slump of less than 25 mm [1 inch], the test specimens must be consolidated by ...

2 - ✔✔If the concrete is to be consolidated by vibration, a standard 100 by 100 mm [4 by 8 inch] cylinder mold must be filled in _____ equal layers. 25 - ✔✔When rodding a standard 150 by 300 mm [6 by 12 inch] cylinder, each layer must be rodded ______ times. 1 inch - ✔✔When rodding each upper layer of concrete in a cylinder, the tamping rod should penetrate into the underlying layer by about ... 2 - ✔✔When using an internal vibrator to consolidate a 150 by 300 mm [6 by 12 inch] compressive strength specimen, the vibrator must be inserted at _____ different points for each layer. 2 square inches - ✔✔When consolidating a flexural strength test specimen by rodding, rod one stroke for each ________ of top surface area. 6 inches - ✔✔When internal vibration is used to consolidate a standard flexural strength test specimen, the technician should insert the vibrator at intervals not exceeding ____________ along the center line of the beam. 68 - 78 degrees F - ✔✔Concrete mixtures with specified strengths of 40 MPa [6000 psi] or greater shall have an initial curing temperature between ... 60 - 80 degrees F - ✔✔Up to 48 hours after molding, test specimens that are to be standard cured shall be stored in a temperature range between ... False - ✔✔Upon completion of initial curing, the test specimens may be left in their molds and sealed in plastic bags. True or False. jarring, freezing temperatures, moisture loss - ✔✔During transportation, test specimens must be protected from damage due to ... 8 hours - ✔✔Specimens shall not be transported until ________ after final set.

4 hours - ✔✔Transportation time shall not exceed ... acceptance testing for specified strength and quality control - ✔✔Standard curing is the curing method used when test specimens are to be used for ... in or on the structure as near to the point of deposit of the concrete represented as possible, in as near as possible the same way as the framed work - ✔✔Cylinders that are to be field cured are stored ________ and protected _________. the same as the structural work - ✔✔The temperature and moisture environment for field cured cylinders must be ... at the time of removal of form work - ✔✔Cylinders made for the purpose of determining when a structure may be put into service shall be removed from the molds ... determination of whether the structure is capable of being put into service, comparison with standard cured specimens test results or with results from various in-place test methods, adequacy of curing and protection of concrete in the structure, and form or shoring removal time requirements - ✔✔Field curing is the curing method used when test specimens are to be used for ...