120.55
ICV
70
MNiSW
CC BY-NC 3.0 Poland
 
 

CHEMICAL ACTIVATION EFFECT ON THE MECHANICAL RESPONSE OF MORTARS BASED ON DUNE SAND

Moncef Zairi 1,  
 
1
Ecole d’Ingénieurs de SFAX, (laboratoire eau, energie et Environnement),Sfax,3000, Tunisia.
2
Department of civil engineering, Faculty of Technonoly, Med Boudiaf University of M'sila,
Mining Science 2020;27:61–71
KEYWORDS
TOPICS
ABSTRACT
The main qualities sought for a mortar are usually; the high compactness, good sealing or impermeability, better mechanical strength and long-term durability. The different methods of accelerating setting and hard-ening of the mortar as well as the desired characteristics are of great importance with regard to the use of mortars and their different applications in civil engineering. This work is a contribution to improving the properties of mortars at fresh and hardened state by differ-ent activation techniques in particular chemical alkaline activators method. The properties of chemically activated mortars using alkaline solutions (KOH and NaOH) at dosages of 0, 2 and 4% was investigated in this experimental program using a based cement matrix with dune sand and blended cement type CEM II/ B grade 42. The results obtained showed the beneficial effect of the chemical activation modes mainly, an improve-ment of the mechanical response (compressive strength) at young age and in the long term.
CORRESPONDING AUTHOR
Larbi Belagraa   
Department of civil engineering, Faculty of Technonoly, Med Boudiaf University of M'sila,
 
REFERENCES (19):
1. ARJUNAN P., Silsbee M.R., ROY D.M., 2001, Chemical activation of low calcium flay ash. Part 1: Identification of suitable activators and their dosage. Proceeding of the international Ash utilization Symposium, Kentucky, 2001.
2. BARBARULO R., 2002, Comportement des Matériaux Cimentaires: actions des sulfates et de la tempé-rature, Thèse de doctorat, Ecole Normale Supérieure de Cachan – Université de Laval, France.
3. BEDARD E., 2009, Influence de la température sur le comportement au jeune âge du béton, Thèse Uni-versité Laval, Canada.
4. BUCHWALD A., KAPS C., HOHMANN M., 2003, Alkali-activated binders and pozzolan cement bind-ers-compete binder reaction or two sides of the same story, Alkali Activated Materials, State-of-the-Art Report, RILEM TC 224-AAM.
5. CASTRO-GOMES J., PACHECO-TORGAL F, JALALI, 2008a, Alkali-activated binders: A review. Part 1. Historical background, terminology, reaction mechanisms and hydration products, Construction and Building Materials, 22, 1305–1314, http://doi.org/10.1016/j.conbu....
6. DREUX G., 1995, Nouveau guide du béton, Editions Eyrolles, Paris 1995.
7. FERNÁNDEZ-JIMÉNEZ A., PALOMO A., CRIADO M., 2006, Alkali activated fly ash binders. A com-parative study between sodium and potassium activators [Activación alcalina de cenizas volantes. Estudio comparativo entre activadores sódicos y potásicos], Materiales de Construcción, 56, 51–65.
8. http://doi.org/10.3989/mc.2006....
9. GALLUCCI E., ZHANG X., SCRIVENER K., 2006. Influence de la température sur le développement microstructural des bétons, Septième édition des journées scientifiques du regroupement francophone pour la recherche et la formation sur le béton.
10. JOHN L., PROVISA A., PALOMOB C.S., 2015, Advances in understanding alkali-activated materials, Cement and Concrete Research, Vol. 78, Part A, 110–125.
11. KJELLSEN K.O., DETWILER R.J., 1992, Reaction kinetics of portland cement mortars hydrated at differ-ent temperatures, Cement and Concrete Research, Vol. 22, 112–120.
12. KIM J.-K., HAN S.H., SONG Y.C., 2002, Effect of temperature and aging on the mechanical properties of concrete: Part I. Experimental results, Cement and Concrete Research, Vol. 32, 1087–1094.
13. LADJEL D., ZAIRI M., BELAGRAA L., 2017, Effet de l’activation chimique et thermique du ciment cem II B/42,5 sur la réponse mécanique d’un mortier, Proceeding of ICSMCE, 15–16 November 2017, Skikda, Algeria.
14. PACHECO-TORGAL F., CASTRO-GOMES J., JALALI S., 2008a, Alkali-activated binders: A review. Part 1, 2. Historical background, terminology, reaction mechanisms and hydration products, Con-struction and Building Materials, 22, 1305–1314, http://doi.org/10.1016/j.conbu....
15. ROY D.M., 1999, Alkali-activated cements: Opportunities and challenges, Cement and Concrete Research, 29, 249–254, http://doi.org/10.1016/S0008-8....
16. SAIDAT F., 2013, Activation chimique du métakaolin dans une matrice cimentaire, Thèse de Doctorat de l’université de Toulouse, Discipline ou spécialité: Génie Civil, Université Toulouse III – Paul Sabatier, France.
17. SEDIRA N., JOÃO C.G., GEDIMINAS K., XIANGMING Z., ALEXANDRE V., 2017, A review on mineral waste for chemical-activated binders: mineralogical and chemical characteristics, Mining Science, Vol. 24, 2017, 29–58.
18. VÉNUAT J.M., 1969, Ciments et bétons, Presses Universitaires de France, Paris, France.
19. VORNOVITCH L.V., DRON R., 1975, Action des différents activants sur l’hydratation du laitier gran-ulé, Bull. Liaison Labo. P. ET Ch-83 – mai–juin 1975, Réf. 1810.
eISSN:2353-5423
ISSN:2300-9586