Title:
Rebound Hammer, Pulse Velocity, and Core Tests in Self-Consolidating Concrete
Author(s):
Lina Rojas-Henao, Jaime Fernandez-Gomez, and Juan Carlos Lopez-Aguí
Publication:
Materials Journal
Volume:
109
Issue:
2
Appears on pages(s):
235-243
Keywords:
compressive strength; core strength; nondestructive testing; rebound hammer; self-consolidating concrete; ultrasonic pulse velocity.
DOI:
10.14359/51683710
Date:
3/12/2012
Abstract:
This paper describes a study designed to verify whether self-consolidating concrete (SCC) and conventional vibrated concrete (VC) react similarly to some of the most commonly used tests for strength estimation, such as rebound hammer, ultrasonic pulse velocity (PV), and core drilling. The areas compared include the type of fit and correction factors for estimating compressive strength with rebound hammer, ultrasonic PV and core tests, and the effect of variables such as casting direction, sample location, core diameter, core moisture conditions, concrete strength, and the possible effects of congested reinforcement. The findings revealed significant differences in the way some of these variables and correction factors for estimating strength affect SCC and VC strength measurement.