Study on the Production of a Geopolymeric Cement from Rice Husk Ash in Madagascar

Hery Mikaela Ratsimbazafy, Antoine Rasoloniaina Koera, Velomanantsoa Gabriely Ranaivoniarivo, Harimbinintsoa Ravaomialitiana, Guy Joël Robisonarison, Jean De Dieu Ramaroson, Rija Lalaina Rakotosaona, Zolimboahangy Rakotomalala

Abstract


   1) SUMMARY

Currently the Malagasy government is launching a policy of building housing in each region. However, the supply of construction materials (cement, iron, sheet metal…) is made through imports which is not within the reach of all households, and constitutes the main obstacle to achieving its objectives.

Madagascar has large quantities of natural resources. Kaolin clay deposits with very large reserves have been identified in different parts of the island, for example in IBITY (Vakinakaratra) or ANJIRO (Alaotra Mangoro), and as a rice producing country, we have large quantity of husks (hard outer shell of the rice grain that are agricultural waste).

After metakaolin (obtained by calcining kaolinic clays), active fine silica (obtained by burning rice husks) is essential for the manufacture of sodium silicate and weakly basic calcium silicate (mixture of rice husk ash and Portland cement), which are the raw materials required to develop and study the production of out geopolymeric cement.

The aim of our research is to find a new building material that can become a real alternative to artificial Portland cement, in economic, technical and environmental terms.

The interest in geopolymer cements is obvious for the economies of developing countries


Keywords


Cement, Geopolymerization, Metakaolin, Rice Husk Ash, Soda Ash, Silica, Alumina

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References


• RATSIMBAZAFY Hery Mikaela, RABE Christian (1987) “Study of the production of an alternative cement from lime and ash and paddy balls”, thesis in Chemical engineering at the E.E.S.O University of Madagascar

• RAHARIVAO Anjaramalala (1987) “Physical and physicochemical studies of Malagasy clay deposits of economic interest “Doctoral thesis E.E.E.S Sciences, University of Madagascar

• RAMAROSON Jean de Dieu (1995) « studies on the chemical valorization of kaolinite for the production of aluminum sulphate, alum and sodium silicate” DEA thesis in Chemical Engineering E.E.S.P, University of Madagascar

• Geopolymer INSTITUTE (1996) « About geopolymerization » DAVIDOVITS Joseph (1998° “Methods of manufacturing geopolymeric cements obtained by these methods” Patent.

• Geopolymer INSTITUTE (1998) “Technical data CEMENT DAVYA TM 60”.

• RATSARAHASINA Mavoniaina Dimbimalala (2005) « Elaboration of supersulphated cement based on natural pozzolana” DEA thesis in Chemical Engineering: from E.E.S.P, University of Madagascar.

• TOGNONVI Monique Tohoué (2009) « Physico-chemestry of sodium silicate gelation in a basic environment” Doctoral thesis: Science-technology-health, Faculty of science and Technology discipline: ceramic materials and surface treatments, University of Limoges


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Copyright (c) 2019 Hery Mikaela Ratsimbazafy, Antoine Rasoloniaina Koera, Velomanantsoa Gabriely Ranaivoniarivo, Harimbinintsoa Ravaomialitiana, Guy Joël Robisonarison, Jean De Dieu Ramaroson, Rija Lalaina Rakotosaona, Zolimboahangy Rakotomalala

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