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Development of Sustainable and Eco-Friendly Materials from Termite Hill Soil Stabilized with Cement for Low-Cost Housing in Chad

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dc.contributor.author Assia, Aboubakar Mahamat
dc.contributor.author Numfor, Linda Bih
dc.contributor.author Olugbenga, Ayeni
dc.contributor.author Peter, Azikiwe Onwualu
dc.contributor.author Holmer, Savastano, Jr
dc.contributor.author Winston, Oluwole Soboyejo
dc.date.accessioned 2021-09-02T05:19:36Z
dc.date.available 2021-09-02T05:19:36Z
dc.date.issued 2021
dc.identifier.uri http://hdl.handle.net/123456789/1515
dc.description.abstract This paper explores the effects of cement stabilization (5, 10, 15 and 20 wt%) on the structural and mechanical properties (compressive/flexural strengths and fracture toughness) of abandoned termite mound soil. The crystal structures and crystallinity of the constituents were determined using X-ray diffraction (XRD), while the microstructure was characterized via scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). The functional groups were also identified using Fourier transform infra-red spectroscopy (FTIR). The compressive/flexural strengths of the stabilized and un-stabilized termite mound soil were also studied after curing for 7, 14 and 28 days. The fracture toughness mechanism was analyzed with the aid of the R-curve method. Additionally, the underlying deformation and cracking mechanisms are elucidated via in-situ/ex-situ optical and scanning electron microscopy. The stabilized termite mound soil displayed the highest mechanical properties of 13.91 MPa, 10.25 MPa and 3.52 kPa·m1/2 for compressive strength, flexural strength and fracture toughness, respectively. Besides displaying good mechanical properties and being locally available at no cost, renewable and an eco-friendly material, the termite mound soil will contribute to lowering the cost of housing in Sub-Saharan Africa, particularly in Chad. en_US
dc.description.sponsorship Pan African Materials Institute (PAMI) World Bank, African Centers of Excellence (ACE) program hosted by the African University of Science and Technology (AUST). en_US
dc.publisher MDPI Building en_US
dc.rights Attribution-NonCommercial-ShareAlike 3.0 United States *
dc.rights.uri http://creativecommons.org/licenses/by-nc-sa/3.0/us/ *
dc.subject Cement stabilization en_US
dc.subject Termite mound soil en_US
dc.subject Structure en_US
dc.subject Compressive/flexural strengths en_US
dc.subject Fracture toughness en_US
dc.subject Deformation en_US
dc.subject Fracture mechanisms en_US
dc.title Development of Sustainable and Eco-Friendly Materials from Termite Hill Soil Stabilized with Cement for Low-Cost Housing in Chad en_US
dc.type Article en_US


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