ACI - Concrete Strength Technician Training Exam Questions with 100% Correct Answers | Verified & Updated 2024
44 views 2 purchases
Course
ACI Concrete
Institution
ACI Concrete
ACI - Concrete Strength Technician Training Exam Questions with
100% Correct Answers | Verified & Updated 2024
Standard Practice for Capping Cylindrical Concrete Specimens - Answer ️️ -ASTM C617
Procedures for capping enable concrete cylinders and cores to meet C617's practice requirements
...
ACI - Concrete Strength Technician Training Exam Questions with 100% C orrect Answers | Verified & Updated 2024 Standard Practice for Capping Cylindrical Concrete Specimens - Answer ✔️✔️-ASTM C 617 Procedures for capping enable concrete cylinders and cores to meet C617's practice requirements for___ and___. - Answer ✔️✔️-Perpendicularity, Planeness ___ can be made of glass, machined metal, polished granite, or diabase. (C617) - Answer ✔️✔️-
Capping plates Sulfur caps can be formed against ___ or___ plates. - Answer ✔️✔️-Metal, stone The working surface of a capping plate shall not depart from plane by more than___ mm. - Answer ✔️✔️-0.05 Device used in conjunction with a capping plate to ensure perpendicularity. - Answer ✔️✔️-
Alignment device Perpendicularity requirement of the axis of a cylindrical specimen. (degre es) - Answer ✔️✔️-0.5 The element of a melting pot that ensures against accidents during reheating of cooled sulfur. - Answer ✔️✔️-Peripheral Heating Temperature of the sulfur mortar pot/materials. - Answer ✔️✔️-265-290 F Capping material to be used on freshly molded cylinders. - Answer ✔️✔️-Neat Portland Cement paste Remove this from the end of cylinders before capping. - Answer ✔️✔️-Oily or Waxy materials Materials that can be used to cap hardened cement concrete cylinders. - Answer ✔️✔️-Neat Portla nd Cement, Gypsum Cement, Sulfur T/F Plaster of paris is an example of a high -strength plaster - Answer ✔️✔️-False Sulfur and gypsum cubes much show this compressive strength or the cylinder strength, whichever is greater. - Answer ✔️✔️-5000 psi Strength of the paste depends on___, ___, and___. - Answer ✔️✔️-Water cement ratio, time, type of cement These are avoided when a slight twisting motion is applied while capping. - Answer ✔️✔️-Air voids and excess paste Sulfur material should not be used more than ___ times. - Answer ✔️✔️-5 T/F When capping concrete cylinders with a compressive strength of 5000 psi or greater, it is permitted to reuse compound recovered from the capping operation of old caps. - Answer ✔️✔️-
False Sulfur mortar should be kept away from this while heating. - Answer ✔️✔️-Water Sulfur mortar should be kept under a ___ with an___ for venting. - Answer ✔️✔️-Hood, exhaust Standard Practice for use of unbonded caps in determination of compressi ve strength of hardened concrete cylinders. - Answer ✔️✔️-ASTM C 1231 Thickness of pads (C1231) in Inches - Answer ✔️✔️-1/2 Durometer used in C1231 with a tolerance of +/ -5. - Answer ✔️✔️-Shore A Type of pad with classifications in C1231. - Answer ✔️✔️-Neoprene Height of the retaining ring used in unbonded capping. in inches - Answer ✔️✔️-1 The inside diameter of the retaining ring shall be within ___ of the diameter of the cylinder. - Answer ✔️✔️-102-107% Thickness of the retaining ring for 6 in and 4 in specimens respectively. - Answer ✔️✔️-12 mm, 9 mm The bearing surfaces shall not have gouges or grooves greater than this depth. (mm) - Answer ✔️✔️-0.25 Cylinders should be made in accordance with one of these procedures. - Answer ✔️✔️-C31 or C192 Depressions in the concrete cylinder shall not exceed___in., with grinding, sawing or capping being the correction. - Answer ✔️✔️-0.20 When tests are made to establish a permissible number of reuses, the tests within ___ of the highest strength level will be included in the reuse count. - Answer ✔️✔️-2000 psi Qualification tests of unbonded caps are to be performed by___. - Answer ✔️✔️-Supplier/tester T/F C1231 establishes a maximum number of pad reuses that may not be exceeded under any circumstances. - Answer ✔️✔️-False Psi range in which unbonded caps can be used. - Answer ✔️✔️-1500 -12,000 T/F Polyurthane or butyl pads with a hardness of 50 that will be used on concrete with a compressive strength of 1500 -6000 psi need not be qualified prior to use. - Answer ✔️✔️-False
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller taylorpraise. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.49. You're not tied to anything after your purchase.
