ACI concrete strength testing technician CP-19 23rd Ed 2023/2024.

ACI concrete strength testing technician CP-19 23rd Ed 2023/2024. These procedures for capping enable concrete cylinders and cores to meet the standard practices requirements for __________ and __________. - Correct Answer Planeness , perpendicularity Equipment needed for the capping process includes capping __________ , __________ devices and __________ pots. - Correct Answer Plates , alignment , melting. Plates for neat cement and high-strength gypsum plaster caps should be made of __________, __________, __________, or __________. - Correct Answer Glass, metal, granite, diabase Sulfur mortar cap plates should be formed against __________ or __________ plates. - Correct Answer Metal, stone The purpose of the guide bar or bullseye level is to ensure that caps remain perpendicular to the axis of the cylinder within 0.5 degrees. True or False? - Correct Answer True To avoid accidents during reheating of cooled sulfur, use melting pots that have __________. - Correct Answer Peripheral heating The technician should use a stiff layer of __________ to cap fresh concrete cylinders. - Correct Answer Neat cement paste Hardened concrete cylinders should be capped with __________, __________, or __________. - Correct Answer High-strength gypsum paste, neat cement paste, sulfur mortar Plaster of Paris and mixtures of plaster of Paris and Portland cement are examples of suitable high-strength plasters. True or False - Correct Answer False Sulfur mortars and high-strength gypsum cement cubes must demonstrate a minimum compressive strength of __________ or __________, whichever is greater. - Correct Answer 35 MPa [5000 psi], cylinder strength The cement paste should be applied to the freshly molded cylinder from __________ hours after molding. This is to allow for __________ of the concrete specimen - Correct Answer 2 to 4, settling The strength of the paste depends on: A. The water-cement ratio