Feasibility Tests of High Volume Blended Metakaolin-Brick Powder Concrete Incorporating Wastes of Crushed Brick and Plastic as Aggregate
| Autor: | Mahmood Fawzi Ahmed |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Mahmood Fawzi Ahmed |
| ISSN: | 2332-1121 2332-1091 |
| DOI: | 10.13189/cea.2021.090616 |
| Popis: | Sustainability of the construction industry is taking a priority worldwide. The objective of this work is to evaluate the contribution of double using of waste clay brick and waste plastic for some properties of high volume metakaolin concrete. Waste brick powder (BP), after grinding, was blended with metakaolin (MK) at (50:50) % by weight, and this blended powder was replaced for ordinary Portland cement (OPC) at ratio (50:50) %. Six mixtures were produced, including one control mixture and five mixes that have a substitution 30% by volume of natural coarse aggregate with different ratios of blended waste clay brick aggregate (BA) and plastic aggregate (PL). The essential focus of the study is to observe density, compressive and splitting strengths of mixtures containing waste aggregate along with their workability in comparison with the control mix. The results showed that inclusion of blended wastes aggregate have adversely effect on the concrete workability, and decline the density at fresh and hardened state. Also, the use of wastes aggregate (blended or solely) has reduced the splitting strength. Moreover, compressive strength of control mix was 38.3 MPa, while mixes with waste aggregate have ranged between 32.9 - 42.4 MPa. It is, therefore, more beneficial to produce sustainable concrete with moderate strength for variety applications in the construction sector. |
| Databáze: | OpenAIRE |
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