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Guide for Obtaining Cores and Interpreting Compressive Strength Results These criteria specify the circumstances when core tests are permitted, the number of cores to be tested, the conditioning of the cores before testing, the limits on the time interval between coring and testing, and the basis for determining whether the concrete in the area represented by the core strengths is structurally adequate
214. 4-21: Obtaining Cores and Interpreting Core Compressive Strength . . . Chapter 5 summarizes coring tech-niques that should result in high-quality, undamaged, repre-sentative test specimens Chapter 6 describes procedures for testing cores and detecting outliers by inspection of load-machine displacement curves or using statistical tests from ASTM E178
Low-strength cylinder test results Low-strength cylinder test results Q If a structure is being built in accordance with the requirements of ACI 318-19, what must be done when a low-strength test occurs? A Section 26 12 6 1 of ACI 318-19 states that if any strength test of standard-cured cylinders falls below the specified compressive strength by more than the limit allowed for acceptance, or if tests of field-cured cylinders
Low Strength Results and Core Testing Q. - Concrete Q A Low Strength Results and Core Testing Q Lower-than-specified compressive strength was determined from results of cylinder testing of one concrete placement on our project How can we determine if we need to take cores for additional testing and, if we do, what’s the correct procedure to follow?
Guide to Evaluation of Strength Test Results of Concrete Statistical procedures provide valuable tools for evaluating the results of concrete strength tests Information derived from such procedures is valuable in defining design criteria, specifications, and other parameters needed for structural evaluation and repair This guide discusses variations that occur in concrete strength and presents statistical procedures useful in interpreting these
American Concrete Institute The American Concrete Institute (ACI) is a leading authority and resource worldwide for the development and distribution of consensus-based standards, technical resources, educational programs, certification programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete
Certificate Program - American Concrete Institute ACI Certificate Programs, delivered through ACI University, encourage concrete professionals to gain in-depth knowledge about particular topics in concrete materials, design, repair, or construction by following a defined online course of study
topicdetail - American Concrete Institute The American Concrete Institute (ACI) is a leading authority and resource worldwide for the development and distribution of consensus-based standards, technical resources, educational programs, certification programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete