ASTM C900 − 15 Standard Test Method for Pullout Strength of Hardened Concrete

ASTM C900 − 15 Standard Test Method for Pullout Strength of Hardened Concrete

Scope
1.1 This test method covers determination of the pullout strength of hardened concrete by measuring the force required to pull an embedded metal insert and the attached concrete fragment from a concrete test specimen or structure.

The insert is either cast into fresh concrete or installed in hardened concrete.

This test method does not provide statistical procedures to estimate other strength properties.

1.2 The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this test method.

1.3 The text of this test method references notes and footnotes which provide explanatory material.

These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of this test method.

ASTM C900 − 15 Standard Test Method for Pullout Strength of Hardened Concrete

ignificance and Use
5.1 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.