| Titre : |
Durabilité des varietés de bétons. : Carbonatation- perméabilité- milieu agressif |
| Type de document : |
texte imprimé |
| Auteurs : |
Tarek Chiker, Auteur ; Hacene Houari, Directeur de thèse |
| Editeur : |
جامعة الإخوة منتوري قسنطينة |
| Année de publication : |
2017 |
| Importance : |
140 f. |
| Format : |
30 cm. |
| Note générale : |
2 copies imprimées disponibles
|
| Langues : |
Français (fre) |
| Catégories : |
Français - Anglais
Génie Civil
|
| Tags : |
limestone cements limestone filler silica fume sulfates chloride hydration ciment au calcaire filler calcaire fumée de silice chlorures hydratation |
| Index. décimale : |
624 Génie civil |
| Résumé : |
The use of mineral admixtures and industrial wastes has marked the modern industry of concrete and
cement. The major aim of this action is to meet the requirements of sustainable development and ecological
issues. Certainly, the incorporation of those materials has a beneficial influence on the environment by the
decreasing the rate of incoming clinker in the manufacture of concretes and cements. However, their qualities
and engineering properties must be studied before proceeding to the practice adoption. In this study, we
investigated the mechanical properties, hydration and durability of concretes and mortars based on limestone
cement (CFC). The variables are the type of concrete/mortar (Ordinary O, Self-consolidating, and roller
compacted R); the E/C report and the type of added mineral, limestone filler (CF) or silica fume (FS).
Consequently, we have manufactured 16 concretes (O0.8, O0.5, O0.3F, O0.3S; A0.8F, A0.8S, A0.5F, A0.5S,
A0.3F, A0.3S; R0.8F, R0.8S, R0.5F, R0.5S R0.3F and R0.3S), and 17 mortars (MO0,8, MO0,5ref, MO0,5
,MO0,3F ,MO0,3S; MA0,8F ,MA0,8S ,MA0,5L ,MA0,5S ,MA0,3F, MA0,3S ,MR0,8F ,MR0,8S ,MR0,5L
,MR0,5S ,MR0,3F ,MR0,3S). The reference mortar MO0.5ref has been based on CEM I. The tests made on
concrete are the compressive strength, the water capillary absorption, the mass change in the solutions of sulfate
and sulfate/chloride, the penetration of chloride and SEM monographs. In addition to those tests, it has
completed the study on mortar by the tests of heat of hydration by calorimetry, thermogravimetric analysis and
rapid test of of chloride migration.
The main results of this study are: the E/C report is the overriding factor for any type of concrete/mortar; the
compacted mixtures have marked the lowest performance; the ordinary and self-consolidating mixtures have
recorded similar values; silica fume has been beneficial especially for concretes under sulfate attack.
Furthermore, it was concluded that: the influence of the porous structure of the mixtures is more significant
than the chemical composition of the binder, especially in the case of the sulfatique attack; the capillary
absorption is a good indicator of the durability, and can be correlated with the resistance to chloride than
sulfates; the presence of chloride in alternation with sulfate has exacerbated the deterioration of concretes, and
this effect was reversed in the case of mortars. |
| Diplôme : |
Magistère |
| En ligne : |
../theses/gcivil/CHI7031.pdf |
| Format de la ressource électronique : |
pdf |
| Permalink : |
https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10568 |
Durabilité des varietés de bétons. : Carbonatation- perméabilité- milieu agressif [texte imprimé] / Tarek Chiker, Auteur ; Hacene Houari, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2017 . - 140 f. ; 30 cm. 2 copies imprimées disponibles
Langues : Français ( fre)
| Catégories : |
Français - Anglais
Génie Civil
|
| Tags : |
limestone cements limestone filler silica fume sulfates chloride hydration ciment au calcaire filler calcaire fumée de silice chlorures hydratation |
| Index. décimale : |
624 Génie civil |
| Résumé : |
The use of mineral admixtures and industrial wastes has marked the modern industry of concrete and
cement. The major aim of this action is to meet the requirements of sustainable development and ecological
issues. Certainly, the incorporation of those materials has a beneficial influence on the environment by the
decreasing the rate of incoming clinker in the manufacture of concretes and cements. However, their qualities
and engineering properties must be studied before proceeding to the practice adoption. In this study, we
investigated the mechanical properties, hydration and durability of concretes and mortars based on limestone
cement (CFC). The variables are the type of concrete/mortar (Ordinary O, Self-consolidating, and roller
compacted R); the E/C report and the type of added mineral, limestone filler (CF) or silica fume (FS).
Consequently, we have manufactured 16 concretes (O0.8, O0.5, O0.3F, O0.3S; A0.8F, A0.8S, A0.5F, A0.5S,
A0.3F, A0.3S; R0.8F, R0.8S, R0.5F, R0.5S R0.3F and R0.3S), and 17 mortars (MO0,8, MO0,5ref, MO0,5
,MO0,3F ,MO0,3S; MA0,8F ,MA0,8S ,MA0,5L ,MA0,5S ,MA0,3F, MA0,3S ,MR0,8F ,MR0,8S ,MR0,5L
,MR0,5S ,MR0,3F ,MR0,3S). The reference mortar MO0.5ref has been based on CEM I. The tests made on
concrete are the compressive strength, the water capillary absorption, the mass change in the solutions of sulfate
and sulfate/chloride, the penetration of chloride and SEM monographs. In addition to those tests, it has
completed the study on mortar by the tests of heat of hydration by calorimetry, thermogravimetric analysis and
rapid test of of chloride migration.
The main results of this study are: the E/C report is the overriding factor for any type of concrete/mortar; the
compacted mixtures have marked the lowest performance; the ordinary and self-consolidating mixtures have
recorded similar values; silica fume has been beneficial especially for concretes under sulfate attack.
Furthermore, it was concluded that: the influence of the porous structure of the mixtures is more significant
than the chemical composition of the binder, especially in the case of the sulfatique attack; the capillary
absorption is a good indicator of the durability, and can be correlated with the resistance to chloride than
sulfates; the presence of chloride in alternation with sulfate has exacerbated the deterioration of concretes, and
this effect was reversed in the case of mortars. |
| Diplôme : |
Magistère |
| En ligne : |
../theses/gcivil/CHI7031.pdf |
| Format de la ressource électronique : |
pdf |
| Permalink : |
https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10568 |
|
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