ASTM C900
Full Name
ASTM C900 – Standard Test Method for Pullout Strength of Hardened Concrete
Scope
ASTM C900 is a standard test method for determining the pullout strength of hardened concrete. It involves measuring the force required to pull an embedded metal insert, along with the attached concrete fragment, out of a concrete test specimen or structure. The insert can be either cast into fresh concrete or installed into hardened concrete.
Key aspects covered by ASTM C900:
- Purpose: the main purpose is to determine the in-place strength of concrete in existing structures or to verify if the concrete has reached a specified strength level in new constructions.
- Test method: the test involves pulling the insert using a jack reacting against a bearing ring and measuring the maximum force required to pull it out.
- Applications: this test method can be used for various purposes, including:
- Determining if post-tensioning can proceed.
- Deciding if forms and shores can be removed.
- Assessing if winter protection and curing can be terminated.
- Estimating the strength of concrete in existing constructions.
- Limitations: this test method does not provide statistical procedures to estimate other strength properties of concrete. It also doesn’t offer guidance on establishing a strength relationship or interpreting test results; for that, users are referred to ACI 228.1R.
Overall, ASTM C900 offers a standardized way to assess the in-place strength of hardened concrete, providing valuable information for construction and maintenance decisions.
ASTM C900 Accredited Laboratory
Applied Testing & Geosciences, LLC is accredited for performing tests using the ASTM C900 standard.
Contact us today to learn more about our testing capabilities and how we can support your business.
Resources
Keywords
pullout strength; hardened concrete; test method; metal insert; bearing ring; jack; concrete strength; in-place strength