Experimental Investigation of the Production of Sustainable Lightweight Concrete
An experimental study on four types of coarse aggregate was conducted to produce lightweight concrete. These four types are namely; white limestone, red limestone, clay brick fragments, and pumice. Ordinary Portland cement was used for all examined mixes. Water to cement ratio (w/c) was modified acc...
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| Format: | Article |
| Language: | English |
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Unviversity of Technology- Iraq
2020-11-01
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| Series: | Engineering and Technology Journal |
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| Online Access: | https://etj.uotechnology.edu.iq/article_169228_28fa196a0687d9e3e7d548d4c4804140.pdf |
| _version_ | 1797336381292281856 |
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| author | Mouhammed J. Lafta |
| author_facet | Mouhammed J. Lafta |
| author_sort | Mouhammed J. Lafta |
| collection | DOAJ |
| description | An experimental study on four types of coarse aggregate was conducted to produce lightweight concrete. These four types are namely; white limestone, red limestone, clay brick fragments, and pumice. Ordinary Portland cement was used for all examined mixes. Water to cement ratio (w/c) was modified according to the effect of coarse aggregate type on the workability of the resulted concrete for each mix. The reference concrete mix, which is normal concrete, water to cement ratio used was (0.5). The investigated characteristics for all concrete mixes were workability, compressive strength, dry density, absorption, and thermal conductivity. Results indicated that the aggregate type significantly affects most of the properties of lightweight concrete mixes such as workability, density, and thermal insulation for all tested types of concrete. All investigated specimens indicated improvement in terms of density, workability, and thermal conductivity when compared to the reference concrete mix. Yet, it was derived from the testing results that using pumice in lightweight concrete production is the optimum option among the other examined types. When compared to normal concrete, this type of lightweight concrete showed a 41% decrease in dry density, nearly 72.54% decrease in thermal conductivity, and about 12% increase in workability. However, it is vital to notice that due to the low compressive strength and the relatively high absorption capability for all the examined types of lightweight concrete, it is suggested to use these types of concrete for non-structural walls that are not subjected to or exposed to high humidity. |
| first_indexed | 2024-03-08T08:53:31Z |
| format | Article |
| id | doaj.art-8e992f1d75204bfc9c6f31d63b41cc2c |
| institution | Directory Open Access Journal |
| issn | 1681-6900 2412-0758 |
| language | English |
| last_indexed | 2024-03-08T08:53:31Z |
| publishDate | 2020-11-01 |
| publisher | Unviversity of Technology- Iraq |
| record_format | Article |
| series | Engineering and Technology Journal |
| spelling | doaj.art-8e992f1d75204bfc9c6f31d63b41cc2c2024-02-01T07:36:19ZengUnviversity of Technology- IraqEngineering and Technology Journal1681-69002412-07582020-11-013811A1652166510.30684/etj.v38i11A.1621169228Experimental Investigation of the Production of Sustainable Lightweight ConcreteMouhammed J. Lafta0Engineering and Technology Journal,University of Technology, Baghdad, Iraq.An experimental study on four types of coarse aggregate was conducted to produce lightweight concrete. These four types are namely; white limestone, red limestone, clay brick fragments, and pumice. Ordinary Portland cement was used for all examined mixes. Water to cement ratio (w/c) was modified according to the effect of coarse aggregate type on the workability of the resulted concrete for each mix. The reference concrete mix, which is normal concrete, water to cement ratio used was (0.5). The investigated characteristics for all concrete mixes were workability, compressive strength, dry density, absorption, and thermal conductivity. Results indicated that the aggregate type significantly affects most of the properties of lightweight concrete mixes such as workability, density, and thermal insulation for all tested types of concrete. All investigated specimens indicated improvement in terms of density, workability, and thermal conductivity when compared to the reference concrete mix. Yet, it was derived from the testing results that using pumice in lightweight concrete production is the optimum option among the other examined types. When compared to normal concrete, this type of lightweight concrete showed a 41% decrease in dry density, nearly 72.54% decrease in thermal conductivity, and about 12% increase in workability. However, it is vital to notice that due to the low compressive strength and the relatively high absorption capability for all the examined types of lightweight concrete, it is suggested to use these types of concrete for non-structural walls that are not subjected to or exposed to high humidity.https://etj.uotechnology.edu.iq/article_169228_28fa196a0687d9e3e7d548d4c4804140.pdfcoarse aggregatelightweight concretenon-structural concretepumice |
| spellingShingle | Mouhammed J. Lafta Experimental Investigation of the Production of Sustainable Lightweight Concrete Engineering and Technology Journal coarse aggregate lightweight concrete non-structural concrete pumice |
| title | Experimental Investigation of the Production of Sustainable Lightweight Concrete |
| title_full | Experimental Investigation of the Production of Sustainable Lightweight Concrete |
| title_fullStr | Experimental Investigation of the Production of Sustainable Lightweight Concrete |
| title_full_unstemmed | Experimental Investigation of the Production of Sustainable Lightweight Concrete |
| title_short | Experimental Investigation of the Production of Sustainable Lightweight Concrete |
| title_sort | experimental investigation of the production of sustainable lightweight concrete |
| topic | coarse aggregate lightweight concrete non-structural concrete pumice |
| url | https://etj.uotechnology.edu.iq/article_169228_28fa196a0687d9e3e7d548d4c4804140.pdf |
| work_keys_str_mv | AT mouhammedjlafta experimentalinvestigationoftheproductionofsustainablelightweightconcrete |