Study on Electrical Resistivity of Metakaolin Concrete
DOI:
https://doi.org/10.37628/jsmfe.v5i1.848Keywords:
Metakaolin Concrete, Electrical Resistivity, Non-Destructive Testing, Compressive Strength, Flexural StrengthAbstract
The present work studies the electrical resistivity of metakaolin concrete containing metakaolin at water–binder ratios 0.58, 0.55, 0.50 and 0.45. Cement was replaced with 0%–15% MK. The optimum replacement level was found 10%. Testing included measurement of electrical resistivity (ER), compressive strength and flexural strength (DT); rebound hammer; and ultrasonic pulse velocity test. ER increases with MK content, age and reduction in W/b ratio. The interrelation between ER and compressive strength and flexural strength was given by second-degree polynomial equations. Strengths of concrete can be predicted from the ER at early age from the equations formed avoiding the waiting of 28 days for destructive testing.References
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