Article (Scientific journals)
Effects of production and curing conditions on performances of stabilized compressed earth blocks: Kaolinite vs quartz-rich materials
Nshimiyimana, Philbert; Moussa, Seini Hassan; Messan, Adamah et al.
2020In MRS Advances
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Keywords :
chemical reaction; electrical properties; materials availability; mixtures; strenght
Abstract :
[en] This study investigated the effect of production and curing parameters on the mechanical performance of compressed earth blocks (CEBs) stabilized with 0-20 wt % CCR (calcium carbide residue). Kaolinite (K) and quartz (Q)-rich earthen materials were mixed with the CCR and used to mould CEBs at optimum moisture content (OMC) and OMC+2 % of the dry mixtures, cured at 20 °C, ambient temperature in the lab (30±5 °C) and 40 °C for 0-90 days. After curing, the reactivity of the materials and compressive strength of dry CEBs were tested. Increasing the moulding moisture from OMC to OMC+2 decreased the compressive strength 0.3 times (4.4 to 3.3 MPa) for the CEBs stabilized with 20 % CCR cured at 30±5 °C for 45 days. Similarly, the compressive strength (4.4 MPa) was reached by CEBs stabilized with 10 and 20 % CCR after 28 and 45 days of curing, respectively. At 40 °C, the compressive strength increased 3.3 times (1.1 to 4.7 MPa with 0 to 20 % CCR) for K-rich and 2.5 times (2 to 7.1 MPa) for Q˗rich materials. At 20 °C, the compressive strength increased only 1.3 times (1.1 to 2.5 MPa) for K˗rich and barely 0.7 times (2 to 3.4 MPa) for Q-rich materials. These suggest that CCR is useful for stabilization and improving the performances of CEBs in hot regions.
Research center :
UEE - Urban and Environmental Engineering - ULiège
Disciplines :
Materials science & engineering
Author, co-author :
Nshimiyimana, Philbert  ;  Université de Liège - ULiège > Doct. sc. ingé. & techno. (archi., génie civ. - paysage)
Moussa, Seini Hassan
Messan, Adamah;  Institut international d'ingénierie de l'eau et de l'environnement > Laboratoire éco-matériaux et habitats durables
Courard, Luc  ;  Université de Liège - ULiège > Département ArGEnCo > Matériaux de construction non métalliques du génie civil
Language :
English
Title :
Effects of production and curing conditions on performances of stabilized compressed earth blocks: Kaolinite vs quartz-rich materials
Publication date :
05 March 2020
Journal title :
MRS Advances
eISSN :
2059-8521
Publisher :
Cambridge University Press
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
Amélioration de la qualité de l'habitat en terre crue au Brukina Faso
Funders :
ARES CCD - Académie de Recherche et d'Enseignement Supérieur. Coopération au Développement [BE]
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