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Lightweight concrete is defined as concrete having a specific gravity ranging from 600-1600 kg/m, the specific gravity of this concrete is lower than normal concrete. In this paper, the homogeneity of lightweight concrete panel wall is evaluated using the non-destructive – ultrasonic pulse velocity method. This study involved about 12 different composition panel wall and core tested in 28 days of age, the direct method was used on 180 monitoring points of specimens. The Influence of several factors on the experiment results were evaluated, including expanded polystyrene, polypropylene fibers, SCM thickness, and core wall panel thickness. Comparison between ultrasonic pulse velocity and empirical test showed that the ultrasonic pulse velocity is very useful to evaluate homogeneity and quality of composite materials. Keywords—UPV; homogeneity; wall panel; direct method

Prediction of Lighweight Concrete Panel Homogeneity by Ultrasonic Pulse Velocity (UPV)