Abstract:
This research aims to study some of mechanical and Physical Properties of Sustainable Green Concrete incorporating pozzolanic materials (silica fume, fly ash, blast furnace slag powder, metakaolin and glass waste powder) from recycled waste as replacement to the cement weight by 5%, 10%, and 15% and passed through a sieve opening 150 ?m. The evaluation was based on the assessment of Physical Properties (consistency of all pozzolanic concrete and the reference mixture) and mechanical properties (compressive strength and indirect tensile strength) measured at 28, and 56 days. From the results obtained, there was a noticeable improvement in the consistency of all pozzolanic concrete mixtures compared to the reference mixture (MR), glass waste powder concrete gives higher performance compared to other of the mixtures at all replacement ratios. At a curing age of 28 days, there was a noticeable improvement in the compressive strength of concrete up to 1.73%, containing 15% blast furnace slag powder (BFP) compared to the strength of MR. While the compressive strength of the other pozzolanic mixtures is lower compared to the strength of MR at replacement ratios of 5, 10, and 15%. At a curing age of 56 days, there was a significant improvement in the compressive strength of BFP and Metakaolin (MK) concrete with a 15% replacement ratio of 6.7% and 3.3% respectively and there is a significant improvement in compressive strength of up to 2% and 0.5%. for SF and BFP with 10%, respectively, compared to the MR. The compressive strength of pozzolanic concrete improves with increasing concrete age at all replacement ratios. At the curing age of 28 and 56 days the compressive strength of SF and FA concrete increases up to 10% replacement, after which its value decreases, while BFP, MK and WGP concrete improve with increasing replacement ratio. Glass waste powder concrete (WGP) with 10% replacement gave a higher indirect tensile strength 7.1%, while the other of pozzolanic mixtures gave a lower tensile strength, compared to the tensile strength of MR. Pozzolanic concrete made from (SF, FA, MK, and WGP), its strength to indirect tensile increases with an increase in the replacement ratio up to 10%, after which its value decreases. While the tensile strength of BFP concrete increases with an increase in the replacement ratio. The density of pozzolanic concrete, which includes SF, FA, MK and WGP at all replacement ratios, is lower compared to the density of MR. The density of SF and WGP concrete decreases with increasing replacement ratios and concrete age, while MK concrete density decreases with increasing replacement ratios and increases with increasing concrete age. However, the density of BFP concrete increases with the increase of both the replacement ratio and concrete age.
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