ACI 214.4R-10 PDF Download

ACI 214.4R-10 is a standard titled "Guide for Obtaining Cores and Interpreting Compressive Strength Results." This standard provides guidance on the process of obtaining core specimens from concrete structures and interpreting the results of compressive strength tests.

The purpose of core testing is to determine the strength of concrete in a structure, either to assess compliance with strength-based acceptance criteria for new structures or to evaluate the structural capacity of existing structures. However, various factors can affect the in-place concrete strength and the measured strength of the test specimens, making the process challenging.

The standard covers the factors that can influence the in-place concrete strength, helping users select appropriate sampling locations. It also provides strength correction factors for converting the measured strength of non-standard core test specimens to equivalent specimens with standard dimensions and moisture conditioning.

Additionally, the standard offers guidance on checking the strength compliance of concrete in a structure under construction and methods for determining an equivalent specified strength to assess the capacity of an existing structure.