[ Etude Comparative des Caractéristiques Mécaniques des Briques en Mortiers de Sable et de Latérite Comprimée Stabilisés au Ciment ]
Volume 28, Issue 2, January 2020, Pages 438–451
Bozabe Renonet Karka1, Kinet Ouinra2, and Tomtebaye Ngakoutou Fulbert3
1 Département du Génie Civil, Ecole Nationale Supérieure des Travaux Publics (ENSTP), N’Djamena, Chad
2 Laboratoire de génie civil de l’Ecole Nationale Supérieure des Travaux Publics (ENSTP), N’Djamena, Chad
3 Laboratoire de génie civil de l’Ecole Nationale Supérieure des Travaux Publics (ENSTP), N’Djamena, Chad
Original language: French
Copyright © 2020 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The purpose of this study is to determine the dry and wet mechanical resistances after immersion in water of bricks of 15 x 20 x 40 cm3 in sand mortar (cinder blocks) and 10 x 14 x 28 cm3 compressed lateritic mortar bricks (BTC) stabilized with cement. The experimental results obtained show that the 28-day compressive strength values of the 12% cinder blocks and those of the 10% cement Btcs are respectively 2.55 MPa and 7.90 MPa. These values are in accordance with the normative values recommended by the Building Materials Centre (CMC) in N'Djamena (2.4 MPa) and the Land Materials Research Centre (CRATerre) (5 MPa). In the presence of moisture, the loss of resistance is only 28% for BTC and 46% for cinder blocks. Also, the bricks have a suction capacity ranging from 2.50 to 5.02 g/cm² S1/2 for BTC and 6.12 to 10.90 g/cm². S1/2 for cinder blocks. These values are all less than 20 g/cm². S1/2, a value imposed by NF P 554. A comparison of the results of this work shows that, with the same cement content, during dry seasons as in rainy seasons, Btcs are more resistant and more economical than cinder blocks.
Author Keywords: Mechanical resistance, brick, lateritic, immersion, suction, Chad.
Volume 28, Issue 2, January 2020, Pages 438–451
Bozabe Renonet Karka1, Kinet Ouinra2, and Tomtebaye Ngakoutou Fulbert3
1 Département du Génie Civil, Ecole Nationale Supérieure des Travaux Publics (ENSTP), N’Djamena, Chad
2 Laboratoire de génie civil de l’Ecole Nationale Supérieure des Travaux Publics (ENSTP), N’Djamena, Chad
3 Laboratoire de génie civil de l’Ecole Nationale Supérieure des Travaux Publics (ENSTP), N’Djamena, Chad
Original language: French
Copyright © 2020 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
The purpose of this study is to determine the dry and wet mechanical resistances after immersion in water of bricks of 15 x 20 x 40 cm3 in sand mortar (cinder blocks) and 10 x 14 x 28 cm3 compressed lateritic mortar bricks (BTC) stabilized with cement. The experimental results obtained show that the 28-day compressive strength values of the 12% cinder blocks and those of the 10% cement Btcs are respectively 2.55 MPa and 7.90 MPa. These values are in accordance with the normative values recommended by the Building Materials Centre (CMC) in N'Djamena (2.4 MPa) and the Land Materials Research Centre (CRATerre) (5 MPa). In the presence of moisture, the loss of resistance is only 28% for BTC and 46% for cinder blocks. Also, the bricks have a suction capacity ranging from 2.50 to 5.02 g/cm² S1/2 for BTC and 6.12 to 10.90 g/cm². S1/2 for cinder blocks. These values are all less than 20 g/cm². S1/2, a value imposed by NF P 554. A comparison of the results of this work shows that, with the same cement content, during dry seasons as in rainy seasons, Btcs are more resistant and more economical than cinder blocks.
Author Keywords: Mechanical resistance, brick, lateritic, immersion, suction, Chad.
Abstract: (french)
L’objet de cette étude est la détermination des résistances mécaniques sèches et humides après immersion dans l’eau des briques de dimensions 15 x 20 x 40 cm3 en mortier de sable(parpaings) et des briques de 10 x 14 x 28 cm3 en mortier de latérite comprimée (BTC) stabilisés au ciment. Ces deux variétés de briques (blocs) sont couramment utilisées en constructions au Tchad. Les résultats expérimentaux obtenus montrent que les valeurs de la résistance à la compression à 28 jours des parpaings dosés à 12% et celles des BTC dosés à 10% de ciment sont respectivement de 2,55 MPa et 7,90 MPa. Ces valeurs sont conformes aux valeurs normatives recommandées par le Centre des Matériaux de Construction (CMC) de N’Djamena (2,4 MPa) et par le Centre de Recherche des matériaux en terres (CRATerre) (5 Mpa). En présence de l’humidité, la perte de résistance est seulement de 28% pour les BTC et 46% pour les parpaings. Aussi, les briques ont une capacité de succion allant de 2,50 à 5,02 g/ cm²S1/2pour les BTC et 6,12 à 10,90 g/ cm². S1/2pour les parpaings. Ces valeurs sont toutes inférieures à 20 g/ cm². S1/2, valeur imposée par la norme NFP554. La comparaison des résultats de ce travail montre qu’à dosage de ciment égal, pendant les saisons sèches comme en saisons pluvieuses, les BTC sont plus résistantes et plus économiques que les parpaings.
Author Keywords: Résistance mécanique, brique, latérite, immersion, succion, Tchad.
How to Cite this Article
Bozabe Renonet Karka, Kinet Ouinra, and Tomtebaye Ngakoutou Fulbert, “Comparative Study of the Mechanical Characteristics of Sand Mortar and Compressed Lateritic Bricks Stabilized with Cement,” International Journal of Innovation and Applied Studies, vol. 28, no. 2, pp. 438–451, January 2020.
