Experimental Evaluation of Cement Mortars with End-of-Life Tyres Exposed to Different Surface Treatments
An end-of-Life Tyre (ELT) is a type of waste that can generate negative social and environmental impacts due to its disposal. Considering that rubber can improve concrete properties and the massive use of concrete as construction material, the addition of ELT rubber in concrete mixes is attractive....
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MDPI AG
2021-05-01
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| Online Access: | https://www.mdpi.com/2073-4352/11/5/552 |
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| author | Eduardo García Bárbara Villa Mauricio Pradena Bruno Urbano Víctor H. Campos-Requena Carlos Medina Paulo Flores |
| author_facet | Eduardo García Bárbara Villa Mauricio Pradena Bruno Urbano Víctor H. Campos-Requena Carlos Medina Paulo Flores |
| author_sort | Eduardo García |
| collection | DOAJ |
| description | An end-of-Life Tyre (ELT) is a type of waste that can generate negative social and environmental impacts due to its disposal. Considering that rubber can improve concrete properties and the massive use of concrete as construction material, the addition of ELT rubber in concrete mixes is attractive. However, concrete mechanical properties are negatively affected due to the rubber-cementitious matrix interaction. Although rubber treatments have been developed to minimise the negative effects, the geo-dependency of the mix makes necessary to find cost-effective and practical solutions that will allow a real use of the ELT waste. Therefore, the objective of the present study is to characterise the properties of cement mortars with the addition of ELT rubber under three surface treatments: hydration, oxidation-sulphonation, and hydrogen peroxide. The results show that hydration is the most favourable treatment from a technical, practical, and economical point of view. In fact, with this treatment, it is possible to add up to 5% ELT rubber, with respect to the aggregate weight, and still exceed the design strength without adding more cement or additives as other investigations. The use of Portland Pozzolana Cement, with local fly ash waste, contributes as well to the promissory results obtained. |
| first_indexed | 2024-03-10T11:22:45Z |
| format | Article |
| id | doaj.art-4238f64da5b24039983d97530305094b |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T11:22:45Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-4238f64da5b24039983d97530305094b2023-11-21T19:55:39ZengMDPI AGCrystals2073-43522021-05-0111555210.3390/cryst11050552Experimental Evaluation of Cement Mortars with End-of-Life Tyres Exposed to Different Surface TreatmentsEduardo García0Bárbara Villa1Mauricio Pradena2Bruno Urbano3Víctor H. Campos-Requena4Carlos Medina5Paulo Flores6Departamento de Ingeniería Civil, Facultad de Ingeniería Civil, Universidad de Concepción, Edmundo Larenas 219, Casilla 160-C Correo 3, Concepción 4030000, ChileDepartamento de Polímeros, Facultad de Ciencias Químicas, Universidad de Concepción, Edmundo Larenas 129, Casilla 160-C Correo 3, Concepción 4030000, ChileDepartamento de Ingeniería Civil, Facultad de Ingeniería Civil, Universidad de Concepción, Edmundo Larenas 219, Casilla 160-C Correo 3, Concepción 4030000, ChileDepartamento de Polímeros, Facultad de Ciencias Químicas, Universidad de Concepción, Edmundo Larenas 129, Casilla 160-C Correo 3, Concepción 4030000, ChileDepartamento de Polímeros, Facultad de Ciencias Químicas, Universidad de Concepción, Edmundo Larenas 129, Casilla 160-C Correo 3, Concepción 4030000, ChileDepartamento de Ingeniería Mecánica, Facultad de Ingeniería, Universidad de Concepción, Edmundo Larenas 219, Casilla 160-C Correo 3, Concepción 4030000, ChileDepartamento de Ingeniería Mecánica, Facultad de Ingeniería, Universidad de Concepción, Edmundo Larenas 219, Casilla 160-C Correo 3, Concepción 4030000, ChileAn end-of-Life Tyre (ELT) is a type of waste that can generate negative social and environmental impacts due to its disposal. Considering that rubber can improve concrete properties and the massive use of concrete as construction material, the addition of ELT rubber in concrete mixes is attractive. However, concrete mechanical properties are negatively affected due to the rubber-cementitious matrix interaction. Although rubber treatments have been developed to minimise the negative effects, the geo-dependency of the mix makes necessary to find cost-effective and practical solutions that will allow a real use of the ELT waste. Therefore, the objective of the present study is to characterise the properties of cement mortars with the addition of ELT rubber under three surface treatments: hydration, oxidation-sulphonation, and hydrogen peroxide. The results show that hydration is the most favourable treatment from a technical, practical, and economical point of view. In fact, with this treatment, it is possible to add up to 5% ELT rubber, with respect to the aggregate weight, and still exceed the design strength without adding more cement or additives as other investigations. The use of Portland Pozzolana Cement, with local fly ash waste, contributes as well to the promissory results obtained.https://www.mdpi.com/2073-4352/11/5/552cement mortarEnd-of-Life Tyrewastesurface treatmentcompressive strengthflexural strength |
| spellingShingle | Eduardo García Bárbara Villa Mauricio Pradena Bruno Urbano Víctor H. Campos-Requena Carlos Medina Paulo Flores Experimental Evaluation of Cement Mortars with End-of-Life Tyres Exposed to Different Surface Treatments Crystals cement mortar End-of-Life Tyre waste surface treatment compressive strength flexural strength |
| title | Experimental Evaluation of Cement Mortars with End-of-Life Tyres Exposed to Different Surface Treatments |
| title_full | Experimental Evaluation of Cement Mortars with End-of-Life Tyres Exposed to Different Surface Treatments |
| title_fullStr | Experimental Evaluation of Cement Mortars with End-of-Life Tyres Exposed to Different Surface Treatments |
| title_full_unstemmed | Experimental Evaluation of Cement Mortars with End-of-Life Tyres Exposed to Different Surface Treatments |
| title_short | Experimental Evaluation of Cement Mortars with End-of-Life Tyres Exposed to Different Surface Treatments |
| title_sort | experimental evaluation of cement mortars with end of life tyres exposed to different surface treatments |
| topic | cement mortar End-of-Life Tyre waste surface treatment compressive strength flexural strength |
| url | https://www.mdpi.com/2073-4352/11/5/552 |
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