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 …

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 …

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 …

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 …

American Concrete Institute

This guide is a companion document to ACI 506.2, “Specification for Shotcrete,” and provides information on materials and properties of both dry-mix and wet-mix

A. According to section 19.2.1.3 of ACI 318-19 the specified compressive strength shall be based on the 28-day test results unless otherwise specified in t

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 …

Work proceeded concurrently on multiple levels of the garage and extra precautions were taken and monitored to ensure workers were safe from falling debris from the extensive coring operation above.

Nov 30, 2025 · The American Concrete Institute (ACI) is a leading authority and resource worldwide for the development and distribution of consensus-based standards, technical resources, educational …