Mechanical and Durability Properties of Engineered Cementitious Composite Containing High Volume of Pozzolanic admixture
Mechanical and Durability Properties of Engineered Cementitious Composite Containing High Volume of Pozzolanic admixture
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Date
2019
Authors
Yalley, Paa Kofi Peter
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Publisher
American Journal of Engineering Research (AJER)
Abstract
This research was carried out to evaluate the effects of high amount of pozzolana admixture on
strength and durability properties of concrete. Mechanical properties considered were compressive strength
and tensile strength, the durability properties considered were: water permeability, sulphate permeability and
corrosion of concrete. A reference concrete was proportioned to attain the 28-day compressive strength of 40
MPa. Locust bean pot ash, (a pozzolana material) was used at three levels as cement enhancer (40, 50, and
60% by volume) in producing concrete mixtures. The water to cementitious materials ratio was maintained at
0.50 ± 0.02 for all mixtures. In general strength and durability properties of concrete were considerably
affected by the amount of Locust bean pot ash. Also, the strength and durability properties was increased for
the 40%. Locust bean pot ash mixture were either comparable or superior to the no-Locust bean pot ash
concrete. The corrosion resistance of Locust bean pot ash concrete was either comparable to or better than the
non-Locust bean pot ash concrete, except for one source of Locust bean pot ash at 60% addition level. All the
mixtures, with and without Locust bean pot ash, tested in this investigation conformed to the strength and
durability requirements for excellent quality structural grade concretes.
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Citation
Yalley, P. P. Mechanical and Durability Properties of Engineered Cementitious Composite Containing High Volume of Pozzolanic admixture.