Strength - Ultrasonic Pulse Velocity Relationship of Thermally Activated Alum Sludge Multiple Blended High Performance Concretes

Abstract:

In this research the performance of ultrasonic pulse velocity in concrete is examined as a nondestructive experiment, in order to estimate compressive strength of thermally activated alum sludge multiple blended high performance concretes (HPC) that contain AAS, silica fume (SF), ground granulated blast furnace slag (GGBS) and palm oil fuel ash (POFA) are determined in both binary and ternary blends of cement. The water/binder ratio and total binder content are fixed at 0.30 and 493 kg/m3 for all types of mixes. The ultrasonic pulse velocity (UPV) of each concrete mix was measured using 100mm cubes after a curing period of ages of 3, 7, 28, 56 and 90 days. The results indicate a very positive exponential relationship between compressive strength and UPV for both binary and ternary blends of HPC mixtures, with coefficient correlation (R²) of 0.889.

• Periodical: Key Engineering Materials (Volumes 594-595)
• Pages: 521-526
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.594-595.521
• Online since: December 2013
• Authors: Haider Mohammed Owaid, Roszilah Hamid, Mohd Raihan Taha
• Keywords: Alum Sludge, High-Performance Concrete (HPC), Pozzolanic Activity, Thermal Activation, Ultrasonic Pulsevelocity

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