Abstract
Low-cost housing is urgently needed in low- and middle-income countries. Concrete is often too costly and raw material production, including aggregate extraction, is known to be harmful to the environment. In this paper the use of an agricultural waste, corncob, as a potential lightweight replacement of sand in cement materials has been studied. Corncob granules were added to the mix in percentages of 5%, 10%, 15% and 20% by volume. The corncob granules were used in their natural state as well as following coating with either cement slurry or gum Arabic. The effect of sand replacement was determined through flexural and compressive testing of materials, while the chemical composition was evaluated using Thermogravimetric Analysis (TGA) and X-Ray Diffraction (XRD). The porosity of the mixes was also determined using a mercury inclusion porosimeter (MIP). The results showed that while the early age strength (7 days) was extremely low, the late age’s strengths improved drastically between 10% up to 3500% in 28 days.
Original language | English |
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Title of host publication | Proceedings of the 75th RILEM Annual Week 2021. RW 2021. |
Editors | J. L. Escalante-Garcia, P. Castro Borges, A. Duran-Herrera |
Place of Publication | Cham, Switzerland |
Publisher | Springer, Cham; Fondazione C.I.M.E., Florence |
Pages | 973-982 |
Number of pages | 10 |
ISBN (Electronic) | 9783031217357 |
ISBN (Print) | 9783031217340 |
DOIs | |
Publication status | Published - 11 Mar 2023 |
Event | 75th RILEM Annual Week & International Conference on Advances in Sustainable Construction Materials and Structures - Merida, Mexico Duration: 30 Aug 2021 → 3 Sept 2021 http://rilemweek2021.uanl.mx/ |
Publication series
Name | RILEM Bookseries |
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Volume | 40 |
ISSN (Print) | 2211-0844 |
ISSN (Electronic) | 2211-0852 |
Conference
Conference | 75th RILEM Annual Week & International Conference on Advances in Sustainable Construction Materials and Structures |
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Country/Territory | Mexico |
Period | 30/08/21 → 3/09/21 |
Internet address |
Keywords
- Cement
- Corncob
- Low-cost housing
- Maize
- Strength
ASJC Scopus subject areas
- Mechanics of Materials
- Building and Construction
- Civil and Structural Engineering