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 …

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 …

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 …

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 …

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

A. Compliance requirements for concrete cylinders for strength testing in ACI 318-19 depend on the purpose of the testing. When it comes to strength acceptance

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

ACI Certificate Programs, delivered through ACI University, encourage concrete professionals to gain in-depth knowledge about particular topics in concrete materials, design, repair, or …

This guide reviews and describes practices, procedures, materials, and monitoring methods for the external curing of concrete and provides guidance for specifying curing procedures. …

The technical committees responsible for ACI committee reports and standards strive to avoid ambiguities, omissions, and errors in these documents. In spite of these efforts, the users of …