Article (Scientific journals)
The viability of calcined clays and volcanic scoria from western Cameroon as Supplementary Cementitious Material (SCM)
Dodo, Etone Macka Alexandre; Yannick, Ondoua Abondo Ebengue; Lionel, Ntamag Jacques et al.
2022In Journal of Building Pathology and Rehabilitation, 7 (1)
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Keywords :
Calcined clay; Portland cement; Supplementary Cementitious Material; Volcanic scoria; Western Cameroon; Building and Construction; Civil and Structural Engineering
Abstract :
[en] In order to promote the use of calcined clays and volcanic scoria from the western Cameroon as Supplementary Cementitious Material (SCM), the physical, chemical and mechanical properties of fresh and hardened cements were investigated. The cement was formulated by substituting 10, 20, 30, and 40% of clinker by calcined clays from Mayouom (Mkm) and Balengou (MKb), and volcanic scoria from Foumbot (PNf). For each of the three raw materials, the loss on ignition is less 1%, the sum %SiO2 + %Al2O3 + %Fe2O3 is greater than 70%, amorphous phase is present and pozzolanic reactivity with the Chappelle test is greater than 80% of Ca(OH)2 consumed. This makes it possible to classify MKm, MKb and PNf among the pozzolanic materials. The addition of calcined clay to the clinker, result to an increase in the water to cement ratio, unlike the Foumbot pozzolan, which does not really affect this ratio. The three raw material act as setting retarders, with PNf having a greater retarding effect than MKm and MKb. The compressive strengths of the cements formulated in this study shows that with 10% clinker substitution, cements of class 42.5 can be obtained, and that from 20% onwards, the cements obtained are of class 32.5. However, an addition of more than 20% PNf in the clinker produces cements with strength less than 30 MPa at 28 days. Calcined clay from Balengou and Mayouom could be used as a viable alternate source of SCM for cement production with better performances compared to volcanic scoria from Foumbot.
Research center :
Mission de Promotion des Matéraux Locaux du Cameroun
Disciplines :
Earth sciences & physical geography
Author, co-author :
Dodo, Etone Macka Alexandre ;  Laboratory of Materials Analyses, Local Materials Promotion Authority (MIPROMALO), Yaoundé, Cameroon ; Department of Earth Sciences, Faculty of Science, The University of Yaounde I, Yaoundé, Cameroon
Yannick, Ondoua Abondo Ebengue;  Laboratory of Materials Analyses, Local Materials Promotion Authority (MIPROMALO), Yaoundé, Cameroon
Lionel, Ntamag Jacques;  Laboratory of Materials Analyses, Local Materials Promotion Authority (MIPROMALO), Yaoundé, Cameroon
Njimbouombouo Mouliom, Soualiou ;  Université de Liège - ULiège > Département de géologie > Argiles, géochimie et environnements sédimentaires ; Université de Yaoundé 1 > Sciences de la Terre ; Mission de Promotion des Matériaux Locaux
Duna, Linda Lekuna;  Laboratory of Materials Analyses, Local Materials Promotion Authority (MIPROMALO), Yaoundé, Cameroon ; Laboratory of Applied Inorganic Chemistry, Faculty of Science, The University of Yaounde I, Yaoundé, Cameroon
Myllyam, Beleuk A. Moungam Lynn;  Laboratory of Materials Analyses, Local Materials Promotion Authority (MIPROMALO), Yaoundé, Cameroon
Robert, Medjo Eko;  Department of Earth Sciences, Faculty of Science, The University of Yaounde I, Yaoundé, Cameroon
Minsili, Lezin Séba;  LMM Laboratory, ENSPY, The University of Yaoundé I, Yaoundé, Cameroon
Billong, Ndigui;  Laboratory of Materials Analyses, Local Materials Promotion Authority (MIPROMALO), Yaoundé, Cameroon
Language :
English
Title :
The viability of calcined clays and volcanic scoria from western Cameroon as Supplementary Cementitious Material (SCM)
Publication date :
December 2022
Journal title :
Journal of Building Pathology and Rehabilitation
ISSN :
2365-3167
eISSN :
2365-3159
Publisher :
Springer Nature
Volume :
7
Issue :
1
Peer reviewed :
Peer reviewed
Funding text :
This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.
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since 28 December 2022

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