A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Comparison of Metakaolin and Glass Powder as Supplementary Cementitious Materials (SCM) in Rubberized Concrete
https://orcid.org/http://orcid.org/0000-0002-5356-0410
Recent developments in concrete innovation have focused more on lessening the utilisation of concrete raw materials through waste recycling. This will indirectly help to alleviate loads of pollutant on the environment. This study examines crumb rubber waste materials as a partial substitute for aggregates. To ensure that this waste material performed well in concrete properties, the crumb rubber was blended with metakaolin or glass powder as a replacement for cement, in which two batches of specimen were prepared separately. These by-products, recognised as Supplementary Cementitious Materials (SCMs), are increasingly being used as cement replacement materials in the construction industry. As a consequence, significant environmental loads are reduced, and the mechanical and durability properties of concretes are improved in some cases. The objective of this study is to identify the best SCMs to be used with rubberized concrete. The first batch of specimens consists of fine aggregates replaced by 5%, 10%, 15%, and 20% crumb rubber, with metakaolin substituting 20% of the cement. The same percentages of crumb rubber were used to replace sand aggregates in the second batch of concrete mix, with 5% cement was replaced by finely ground glass particles. The setting time, hardened density, and compressive strength of the concrete mix were determined. It was found that rubberized concrete with metakaolin has a faster setting time than concrete with glass powder. The findings also reveal that the density of both batches was less than that of normal concrete. Besides that, specimens containing crumb rubber and metakaolin show a decrease in compressive strength at 28 days as the percentage of crumb rubber in the concrete mix increases. Meanwhile, the specimens containing crumb rubber and glass powder were found to have an acceptable compressive strength range when compared to normal concrete. A linear best-fit relationship was discovered between the density and compressive strength of rubberized concrete. If the percentage of crumb rubber waste materials utilised lies within the tested range (5% to 20%), the proposed linear equations could perhaps predict the density and compressive strength of rubberized concrete containing metakaolin and glass powder.
Comparison of Metakaolin and Glass Powder as Supplementary Cementitious Materials (SCM) in Rubberized Concrete
https://orcid.org/http://orcid.org/0000-0002-5356-0410
Recent developments in concrete innovation have focused more on lessening the utilisation of concrete raw materials through waste recycling. This will indirectly help to alleviate loads of pollutant on the environment. This study examines crumb rubber waste materials as a partial substitute for aggregates. To ensure that this waste material performed well in concrete properties, the crumb rubber was blended with metakaolin or glass powder as a replacement for cement, in which two batches of specimen were prepared separately. These by-products, recognised as Supplementary Cementitious Materials (SCMs), are increasingly being used as cement replacement materials in the construction industry. As a consequence, significant environmental loads are reduced, and the mechanical and durability properties of concretes are improved in some cases. The objective of this study is to identify the best SCMs to be used with rubberized concrete. The first batch of specimens consists of fine aggregates replaced by 5%, 10%, 15%, and 20% crumb rubber, with metakaolin substituting 20% of the cement. The same percentages of crumb rubber were used to replace sand aggregates in the second batch of concrete mix, with 5% cement was replaced by finely ground glass particles. The setting time, hardened density, and compressive strength of the concrete mix were determined. It was found that rubberized concrete with metakaolin has a faster setting time than concrete with glass powder. The findings also reveal that the density of both batches was less than that of normal concrete. Besides that, specimens containing crumb rubber and metakaolin show a decrease in compressive strength at 28 days as the percentage of crumb rubber in the concrete mix increases. Meanwhile, the specimens containing crumb rubber and glass powder were found to have an acceptable compressive strength range when compared to normal concrete. A linear best-fit relationship was discovered between the density and compressive strength of rubberized concrete. If the percentage of crumb rubber waste materials utilised lies within the tested range (5% to 20%), the proposed linear equations could perhaps predict the density and compressive strength of rubberized concrete containing metakaolin and glass powder.
Comparison of Metakaolin and Glass Powder as Supplementary Cementitious Materials (SCM) in Rubberized Concrete
https://orcid.org/http://orcid.org/0000-0002-5356-0410
Recent developments in concrete innovation have focused more on lessening the utilisation of concrete raw materials through waste recycling. This will indirectly help to alleviate loads of pollutant on the environment. This study examines crumb rubber waste materials as a partial substitute for aggregates. To ensure that this waste material performed well in concrete properties, the crumb rubber was blended with metakaolin or glass powder as a replacement for cement, in which two batches of specimen were prepared separately. These by-products, recognised as Supplementary Cementitious Materials (SCMs), are increasingly being used as cement replacement materials in the construction industry. As a consequence, significant environmental loads are reduced, and the mechanical and durability properties of concretes are improved in some cases. The objective of this study is to identify the best SCMs to be used with rubberized concrete. The first batch of specimens consists of fine aggregates replaced by 5%, 10%, 15%, and 20% crumb rubber, with metakaolin substituting 20% of the cement. The same percentages of crumb rubber were used to replace sand aggregates in the second batch of concrete mix, with 5% cement was replaced by finely ground glass particles. The setting time, hardened density, and compressive strength of the concrete mix were determined. It was found that rubberized concrete with metakaolin has a faster setting time than concrete with glass powder. The findings also reveal that the density of both batches was less than that of normal concrete. Besides that, specimens containing crumb rubber and metakaolin show a decrease in compressive strength at 28 days as the percentage of crumb rubber in the concrete mix increases. Meanwhile, the specimens containing crumb rubber and glass powder were found to have an acceptable compressive strength range when compared to normal concrete. A linear best-fit relationship was discovered between the density and compressive strength of rubberized concrete. If the percentage of crumb rubber waste materials utilised lies within the tested range (5% to 20%), the proposed linear equations could perhaps predict the density and compressive strength of rubberized concrete containing metakaolin and glass powder.
Comparison of Metakaolin and Glass Powder as Supplementary Cementitious Materials (SCM) in Rubberized Concrete
Iran J Sci Technol Trans Civ Eng
Md Yunus, Balqis (author) / Md Zain, Mohd Raizamzamani (author)
2023-04-01
9 pages
Article (Journal)
Electronic Resource
English
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