International Journal of Materials Chemistry and Physics
Articles Information
International Journal of Materials Chemistry and Physics, Vol.6, No.3, Sep. 2020, Pub. Date: Sep. 24, 2020
Physico-chemical and Mechanical Characterization of Artisanal Pseudo-cement Made in Madagascar
Pages: 30-42 Views: 106 Downloads: 30
Authors
[01] Serge Ravelomanantsoa, Chemistry of Natural Substances, Polytechnic High School, Antananarivo, Madagascar.
[02] Harinivo Olsynthique Razanajatovo, Chemistry of Natural Substances, Polytechnic High School, Antananarivo, Madagascar.
[03] Nambinina Richard Randriana, Chemistry of Natural Substances, Polytechnic High School, Antananarivo, Madagascar.
[04] Tiana Richard Randriamalala, National Laboratory of Public Works and Buildings, Antananarivo, Madagascar.
[05] Baofiza, Metallurgy Department, National Centre for Industrial and Technological Researches, Antananarivo, Madagascar.
[06] Denis Eugène Rakotonomenjanahary, Cement Plant Laboratory Lafarge Holcim, Antananarivo, Madagascar.
[07] Aristote Matondo, Department of Chemistry, Faculty of Science, University of Kinshasa, Kinshasa XI, Democratic Republic of the Congo.
[08] Koto-te-Nyiwa Ngbolua, Department of Environment, Faculty of Science, University of Gbado-Lite, Gbado-Lite, Democratic Republic of the Congo; Department of Biology, Faculty of Science, University of Kinshasa, Kinshasa, Democratic Republic of the Congo.
[09] Robijaona Rahelivololoniaina Baholy, Chemistry of Natural Substances, Polytechnic High School, Antananarivo, Madagascar; Laboratory for the Valorization of Natural Resources, Polytechnic High School, University of Antananarivo, Antananarivo, Madagascar.
Abstract
Cement is an essential material for construction, which is one of the world’s leading industries and one of the largest employers. Of vital importance for housing and basic infrastructure, the cement industry plays a key role in economic development and poverty reduction in emerging and developing countries. Cement production remains fundamentally local, except for some fragmented markets such as those in sub-Saharan Africa. It requires heavy investments that require financing and long-term profitability that are difficult to access in developing countries. There is therefore a need to promote new local materials for the construction of basic infrastructures in Africa. The aim of the present research work to elaborate pseudo-cement from machefer, pozzolan, kaolinitic clay, calcined chlorite. The purpose of this study is to attempt to partially substitute clinker in Portland cement with pozzolanic materials such as natural and artificial pozzolans. These mineral compounds are mainly composed of silica and alumina which has a certain chemical activity called "pozzolanic" that allows them to react with lime to form compounds similar to cement hydrates in order to reduce production costs while obtaining good mechanical performance. Laboratory analyses were carried out to determine their physico-chemical parameters, and then we made normal mortar specimens to optimize the pozzolan and lime content. On all crushing tests carried out, the proportions of optimal lime which give the maximum resistances are equal to 35% for pozzolan, 25% and 55% for machefer, 45% for kaolinitic clay and finally the optimal quantity of the mixture of calcined chlorite and rice husk ash is of ratio (70-30) to obtain good binder.
Keywords
Pseudo-Cement, Clinker, Pozzolans, Pozzolanicity, Machefer, Cement, Mortars
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