ASTM ACI Concrete Strength Testing Lab Technician Exam 2025 Questions and Answers 100% Pass

ASTM ACI Concrete Strength Testing Lab Technician Exam 2025 Questions and Answers 100% Pass C617 - ASTM Standard dealing with proper capping methods Planeness and Perpendicularity - The procedure for capping enables concrete cylinders to meet the standard's requirements for ____ and ____ plates, alignment, melting - equipment needed for the capping process include ____, ____ devices, and ____ pots glass, metal, granite, diabase - Plates for neat cement and high-strength gypsum plaster caps should be made of ____, ____, ____, or ____ metal or stone - Sulfur mortar cap plates should be formed against _____ or _____ .5 - The purpose of the guide bar or bullseye level is that caps remain perpendicular to the axis of the cylinder within _____ degrees peripheral heating - to avoid accidents during reheating, use melting pots that have _____ _____ Neat Cement Paste - The technician should use a stiff layer of _____ to cap fresh concrete cylinders. 2COPYRIGHT © 2025 BY GRACE AMELIA, ALL RIGHTS RESERVED high strength gypsum paste, neat cement paste or sulfur mortar - Hardened concrete cylinders should be capped with _____ _____ _____ _____, _____ _____ _____, or _____ _____. False- They are not suitable - Plaster of Paris and Portland Cement are examples of suitable high-strength plasters. True or False? 5000 psi or 35 MPa or the cylinder's strength - Sulfur mortars and high strength gypsum cement cubes must demonstrate a minimum compressive strength of _____ or _____; whichever is greater. 2 to 4, setting - The cement paste should be applied to the freshly molded cylinders from _____ to ______ hours after molding. This is to allow ______ of the concrete specimen. a, b, d - The strength of the cement paste depends on: Choose all that apply: a) water-cement ratio b) time c) equipment used d) type of cement excess paste, voids - A slight twisting motion will help eliminate _____ and air _____ when the capping plate is placed onto the mound of paste. shrink, crack - Neat cement paste caps should not be used on dry specimens because the caps may _____ and _____ when dry. oily, waxing - The technician should remove all _____ or _____ materials from the ends of hardened concrete cylinders before capping 3COPYRIGHT © 2025 BY GRACE AMELIA, ALL RIGHTS RESERVED Empty, 5 - _____ 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. False - When capping concrete cylinders with a compressive strength of 5000 psi (35 MPa) or greater it is permitted to reuse compound recovered from the capping operation of old caps. True or false? foaming, water - To avoid _____, the sulfur mortar should be dry when it is added to the pot. It should be kept away from _____ whe