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Pull Load Test

The Pull Load Test is a reliable in-place method for estimating the compressive strength of hardened concrete. Unlike standard cylinder tests, which may not represent in-situ curing conditions, this test provides direct assessment from the actual structure, helping to determine formwork removal time, post-tensioning readiness, or structural integrity.

A specially shaped steel insert (typically a rod or disc) is embedded into fresh concrete. After the concrete hardens, a hollow hydraulic ram applies tension to pull the insert out, extracting a cone-shaped plug of concrete. The force required is recorded and correlated to compressive strength. This test can be used for both quality control and investigative purposes on new and existing structures.

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