Investigation of Compressive Strength of Straw Reinforced Unfired Clay Bricks For Sustainable Building Construction
The mud is considered as one of the oldest construction materials in Iraq and is still used in the country regions for farmer’s houses or animal shelters. In Iraq, there are different types of mud constructions, including adobe, unfired bricks and cob. The presented study has focused on unfired clay...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Sciendo
2021-06-01
|
| Series: | Civil and Environmental Engineering |
| Subjects: | |
| Online Access: | https://doi.org/10.2478/cee-2021-0016 |
| _version_ | 1811226173340909568 |
|---|---|
| author | Dawood Abbas O. Mussa Faten I. Khazraji Hayder Al Ulsada Hussain A. Abd Yasser Mohammed M. |
| author_facet | Dawood Abbas O. Mussa Faten I. Khazraji Hayder Al Ulsada Hussain A. Abd Yasser Mohammed M. |
| author_sort | Dawood Abbas O. |
| collection | DOAJ |
| description | The mud is considered as one of the oldest construction materials in Iraq and is still used in the country regions for farmer’s houses or animal shelters. In Iraq, there are different types of mud constructions, including adobe, unfired bricks and cob. The presented study has focused on unfired clay brick where the clay is the main material. To ensure that the clay is pure and clean, it was excavated from the depth of 2 m below the natural ground level. Different types of unfired clay bricks produced by adding different materials to the clay to improve its properties and especially large deformation due to shrinkage. The added materials are classified into three concepts, the first additives are the natural fibers (straw, sawdust, and rice husk) and they are used to improve the tensile strength of brick and reduce the cracking due to shrinkage. The second additives included added the fine and coarse sand as a stabilizer to reduce the volumetric changes. The third additives are adding cement to increase the adhesive and cohesion of the mud matrix. The measurements included compressive strength of brick, mortar, and masonry and the flexural strength of bricks alone. The behaviour of unfired masonry prisms was also compared to the traditionally fired clay brick prisms. The results indicate that higher compressive strength of bricks was got for the mix that included clay, coarse sand and straw. The maximum flexural strength of bricks was got for the mix that included clay and sawdust, while for unfired masonry prism the higher compressive strength was obtained with a mix that included clay, coarse sand and straw. Finally, a proposed formula to obtain the compressive strength of unfired brick masonry from the compressive strength of brick and mortar is presented. |
| first_indexed | 2024-04-12T09:19:48Z |
| format | Article |
| id | doaj.art-dd71e2670c8e49dd9ac5c642098c90ec |
| institution | Directory Open Access Journal |
| issn | 2199-6512 |
| language | English |
| last_indexed | 2024-04-12T09:19:48Z |
| publishDate | 2021-06-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Civil and Environmental Engineering |
| spelling | doaj.art-dd71e2670c8e49dd9ac5c642098c90ec2022-12-22T03:38:42ZengSciendoCivil and Environmental Engineering2199-65122021-06-0117115016310.2478/cee-2021-0016Investigation of Compressive Strength of Straw Reinforced Unfired Clay Bricks For Sustainable Building ConstructionDawood Abbas O.0Mussa Faten I.1Khazraji Hayder Al2Ulsada Hussain A. Abd3Yasser Mohammed M.4Department of Civil Engineering, University of Misan, Iraq.Department of Civil Engineering, University of Misan, Iraq.Department of Civil Engineering, University of Misan, Iraq.Department of Civil Engineering, University of Misan, Iraq.Department of Civil Engineering, University of Misan, Iraq.The mud is considered as one of the oldest construction materials in Iraq and is still used in the country regions for farmer’s houses or animal shelters. In Iraq, there are different types of mud constructions, including adobe, unfired bricks and cob. The presented study has focused on unfired clay brick where the clay is the main material. To ensure that the clay is pure and clean, it was excavated from the depth of 2 m below the natural ground level. Different types of unfired clay bricks produced by adding different materials to the clay to improve its properties and especially large deformation due to shrinkage. The added materials are classified into three concepts, the first additives are the natural fibers (straw, sawdust, and rice husk) and they are used to improve the tensile strength of brick and reduce the cracking due to shrinkage. The second additives included added the fine and coarse sand as a stabilizer to reduce the volumetric changes. The third additives are adding cement to increase the adhesive and cohesion of the mud matrix. The measurements included compressive strength of brick, mortar, and masonry and the flexural strength of bricks alone. The behaviour of unfired masonry prisms was also compared to the traditionally fired clay brick prisms. The results indicate that higher compressive strength of bricks was got for the mix that included clay, coarse sand and straw. The maximum flexural strength of bricks was got for the mix that included clay and sawdust, while for unfired masonry prism the higher compressive strength was obtained with a mix that included clay, coarse sand and straw. Finally, a proposed formula to obtain the compressive strength of unfired brick masonry from the compressive strength of brick and mortar is presented.https://doi.org/10.2478/cee-2021-0016strawunfired clay bricksmasonry constructionsawdustsustainable building |
| spellingShingle | Dawood Abbas O. Mussa Faten I. Khazraji Hayder Al Ulsada Hussain A. Abd Yasser Mohammed M. Investigation of Compressive Strength of Straw Reinforced Unfired Clay Bricks For Sustainable Building Construction Civil and Environmental Engineering straw unfired clay bricks masonry construction sawdust sustainable building |
| title | Investigation of Compressive Strength of Straw Reinforced Unfired Clay Bricks For Sustainable Building Construction |
| title_full | Investigation of Compressive Strength of Straw Reinforced Unfired Clay Bricks For Sustainable Building Construction |
| title_fullStr | Investigation of Compressive Strength of Straw Reinforced Unfired Clay Bricks For Sustainable Building Construction |
| title_full_unstemmed | Investigation of Compressive Strength of Straw Reinforced Unfired Clay Bricks For Sustainable Building Construction |
| title_short | Investigation of Compressive Strength of Straw Reinforced Unfired Clay Bricks For Sustainable Building Construction |
| title_sort | investigation of compressive strength of straw reinforced unfired clay bricks for sustainable building construction |
| topic | straw unfired clay bricks masonry construction sawdust sustainable building |
| url | https://doi.org/10.2478/cee-2021-0016 |
| work_keys_str_mv | AT dawoodabbaso investigationofcompressivestrengthofstrawreinforcedunfiredclaybricksforsustainablebuildingconstruction AT mussafateni investigationofcompressivestrengthofstrawreinforcedunfiredclaybricksforsustainablebuildingconstruction AT khazrajihayderal investigationofcompressivestrengthofstrawreinforcedunfiredclaybricksforsustainablebuildingconstruction AT ulsadahussainaabd investigationofcompressivestrengthofstrawreinforcedunfiredclaybricksforsustainablebuildingconstruction AT yassermohammedm investigationofcompressivestrengthofstrawreinforcedunfiredclaybricksforsustainablebuildingconstruction |