ASTM C900-12
Standard Test Method for Pullout Strength of Hardened Concrete
- Standard No.
- ASTM C900-12
- Release Date
- 2012
- Published By
- American Society for Testing and Materials (ASTM)
- Status
- Replace By
- ASTM C900-12a
- Latest
- ASTM C900-23
- Scope
- 4. Significance and UseTop
Bottom 4.1 For a given concrete and a given test apparatus, pullout strengths can be related to compressive strength test results. Such strength relationships are affected by the configuration of the embedded insert, bearing ring dimensions, depth of embedment, and the type of aggregate (lightweight or normal weight). Before use, the relationships must be established for each test system and each new concrete mixture. Such relationships are more reliable if both pullout test specimens and compressive strength test specimens are of similar size, consolidated to similar density, and cured under similar conditions.
Note 1???Published reports (1-17)4 by different researchers present their experiences in the use of pullout test equipment. Refer to ACI 228.1R (14) for guidance on establishing a strength relationship and interpreting test results. The Appendix provides a means for comparing pullout strengths obtained using different configurations.4.2 Pullout tests are used to determine whether the in-place strength of concrete has reached a specified level so that, for example:
(1) post-tensioning may proceed;(2) forms and shores may be removed;(3) structure may be placed into service; or(4) winter protection and curing may be terminated.In addition, post-installed pullout tests may be used to estimate the strength of concrete in existing constructions.