Aci concrete strength testing technician CP-19 24th Ed. Exam Practice Latest Questions with 100% Accurate Answers

Aci concrete strength testing technician CP-19 24th Ed. Exam Practice Latest Questions with 100% Accurate Answers These procedures for capping enable concrete cylinders and cores to meet the standard practices requirements for __________ and __________. - Answer ️️ -Planeness , perpendicularity Equipment needed for the capping process includes capping __________ , __________ devices and __________ pots. - Answer ️️ -Plates , alignment , melting. Plates for neat cement and high-strength gypsum plaster caps should be made of __________, __________, __________, or __________. - Answer ️️ -Glass, metal, granite, diabase Sulfur mortar cap plates should be formed against __________ or __________ plates. - 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? - Answer ️️ -True To avoid accidents during reheating of cooled sulfur, use melting pots that have __________. - Answer ️️ -Peripheral heating The technician should use a stiff layer of __________ to cap fresh concrete cylinders. - Answer ️️ -Neat cement paste Hardened concrete cylinders should be capped with __________, __________, or __________. - 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 - Answer ️️ -False Sulfur mortars and high-strength gypsum cement cubes must demonstrate a minimum compressive strength of __________ or __________, whichever is greater. - 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 - Answer ️️ -2 to 4, settling The strength of the paste depends on: A. The water-cement ratio B. Time C. The equipment used D. Type of cement - Answer ️️ -A, B, and D The slight twisting action will help eliminate __________ and air __________ when the capping plate is placed into the mound of paste. - Answer ️️ -Excess paste, voids Neat cement paste caps should not be used on dry specimens because the caps may _____ and _____ when dry. - Answer ️️ -Shrink, crack The technician should remove all _____ or _____ materials from the ends of hardened concrete cylinders before capping. - Answer ️️ -oily, waxy _____ the pot and recharge with fresh material at intervals to ensure that the oldest material in the pot has not been used more than _____ times. - Answer ️️ -Empty , five When capping concrete cylinders with a compressive strength of 35 MPa [5000 psi] or greater, it is permitted to reuse compound recovered from the the capping operation of old caps. True or False - Answer ️️ -Fals