Expanded Vermiculite: A Short Review about Its Production, Characteristics, and Effects on the Properties of Lightweight Mortars
Global temperatures have led to an increasing need for air conditioning systems. So, because of this fact, buildings have been improved in terms of their thermal and energy efficiency. Regarding this, the Brazilian standard ABNT NBR 15.575-4/2013 set minimum parameters for the thermal transmittance...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/13/3/823 |
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| author | Plínio Campos de Assis Neto Leane Priscilla Bonfim Sales Palloma Karolayne Santos Oliveira Iranilza Costa da Silva Ilana Maria da Silva Barros Aline Figueiredo da Nóbrega Arnaldo Manoel Pereira Carneiro |
| author_facet | Plínio Campos de Assis Neto Leane Priscilla Bonfim Sales Palloma Karolayne Santos Oliveira Iranilza Costa da Silva Ilana Maria da Silva Barros Aline Figueiredo da Nóbrega Arnaldo Manoel Pereira Carneiro |
| author_sort | Plínio Campos de Assis Neto |
| collection | DOAJ |
| description | Global temperatures have led to an increasing need for air conditioning systems. So, because of this fact, buildings have been improved in terms of their thermal and energy efficiency. Regarding this, the Brazilian standard ABNT NBR 15.575-4/2013 set minimum parameters for the thermal transmittance and thermal capacity of sealing elements, which allow classifying the thermal efficiency of the building. In order to comply with the requirements, the usage and study of lightweight construction materials have been in focus. An example of these materials is vermiculite. The present research reviewed articles about expanded vermiculite. The study involved the examination and comparison of various articles to analyze the properties of vermiculite and the impact of its usage on coating mortars. It was possible to verify that using vermiculite in mortars caused bad workability and a decrease in mechanical strength. However, the porosity and water absorption in mortars increased. Additionally, it reduced the specific weight and the thermal conductivity of the mortars, allowing for a better thermal insulation of the rooms. As an alternative to decreasing the negative effects of vermiculite, it is possible to use chemical admixtures, mineral additions, and mix design with a greater consumption of binder or a combination of particle sizes. |
| first_indexed | 2024-03-11T06:50:06Z |
| format | Article |
| id | doaj.art-e97dfb96003148e494b424b959bda682 |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-11T06:50:06Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-e97dfb96003148e494b424b959bda6822023-11-17T10:04:38ZengMDPI AGBuildings2075-53092023-03-0113382310.3390/buildings13030823Expanded Vermiculite: A Short Review about Its Production, Characteristics, and Effects on the Properties of Lightweight MortarsPlínio Campos de Assis Neto0Leane Priscilla Bonfim Sales1Palloma Karolayne Santos Oliveira2Iranilza Costa da Silva3Ilana Maria da Silva Barros4Aline Figueiredo da Nóbrega5Arnaldo Manoel Pereira Carneiro6Technology and Geosciences Center, Department of Civil Engineering, Federal University of Pernambuco, Campus Recife, Recife 50670-901, BrazilTechnology Center, Department of Civil and Environmental Engineering, Federal University of Paraíba, Campus João Pessoa, João Pessoa 58051-900, BrazilTechnology Center, Department of Civil and Environmental Engineering, Federal University of Paraíba, Campus João Pessoa, João Pessoa 58051-900, BrazilDepartment of Civil and Environmental Engineering, Federal University of Campina Grande, Campus Campina Grande, Campina Grande 58429-900, BrazilTechnology Center, Department of Civil Engineering, Federal University of Rio Grande do Norte, Campus Natal, Natal 59078-970, BrazilDepartment of Civil and Environmental Engineering, Federal University of Campina Grande, Campus Campina Grande, Campina Grande 58429-900, BrazilTechnology and Geosciences Center, Department of Civil Engineering, Federal University of Pernambuco, Campus Recife, Recife 50670-901, BrazilGlobal temperatures have led to an increasing need for air conditioning systems. So, because of this fact, buildings have been improved in terms of their thermal and energy efficiency. Regarding this, the Brazilian standard ABNT NBR 15.575-4/2013 set minimum parameters for the thermal transmittance and thermal capacity of sealing elements, which allow classifying the thermal efficiency of the building. In order to comply with the requirements, the usage and study of lightweight construction materials have been in focus. An example of these materials is vermiculite. The present research reviewed articles about expanded vermiculite. The study involved the examination and comparison of various articles to analyze the properties of vermiculite and the impact of its usage on coating mortars. It was possible to verify that using vermiculite in mortars caused bad workability and a decrease in mechanical strength. However, the porosity and water absorption in mortars increased. Additionally, it reduced the specific weight and the thermal conductivity of the mortars, allowing for a better thermal insulation of the rooms. As an alternative to decreasing the negative effects of vermiculite, it is possible to use chemical admixtures, mineral additions, and mix design with a greater consumption of binder or a combination of particle sizes.https://www.mdpi.com/2075-5309/13/3/823vermiculitefine aggregatelightweight aggregatecoating mortarthermal comfort |
| spellingShingle | Plínio Campos de Assis Neto Leane Priscilla Bonfim Sales Palloma Karolayne Santos Oliveira Iranilza Costa da Silva Ilana Maria da Silva Barros Aline Figueiredo da Nóbrega Arnaldo Manoel Pereira Carneiro Expanded Vermiculite: A Short Review about Its Production, Characteristics, and Effects on the Properties of Lightweight Mortars Buildings vermiculite fine aggregate lightweight aggregate coating mortar thermal comfort |
| title | Expanded Vermiculite: A Short Review about Its Production, Characteristics, and Effects on the Properties of Lightweight Mortars |
| title_full | Expanded Vermiculite: A Short Review about Its Production, Characteristics, and Effects on the Properties of Lightweight Mortars |
| title_fullStr | Expanded Vermiculite: A Short Review about Its Production, Characteristics, and Effects on the Properties of Lightweight Mortars |
| title_full_unstemmed | Expanded Vermiculite: A Short Review about Its Production, Characteristics, and Effects on the Properties of Lightweight Mortars |
| title_short | Expanded Vermiculite: A Short Review about Its Production, Characteristics, and Effects on the Properties of Lightweight Mortars |
| title_sort | expanded vermiculite a short review about its production characteristics and effects on the properties of lightweight mortars |
| topic | vermiculite fine aggregate lightweight aggregate coating mortar thermal comfort |
| url | https://www.mdpi.com/2075-5309/13/3/823 |
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