Performance study of low environmental impact mortars based on mineral additions and cement resistant to sulfate (CRS)

• Autorzy: Belagraa L. , Bouzid A.

Identyfikatory

DOI

10.5277/msc162306

• Języki publikacji: EN

Abstrakty

EN

The use of cement resistance to sulphate in aggressive environments showed a lot of benefits such us good mechanical development and therefore better durability; however, the consumption for great amount of clinker lead to random hazardous deposits, shortage of natural resources, gas and dust emissions mainly (CO₂) causing negative impact on the environment. Recently, technical, economic and environmental benefits by the use of blended cements have been reported and being considered as a research area of great interest in cement production industry. The present research aim is to evaluate the effect of partial replacements of cement resistant to sulfate (CRS) by a pozzolanic addition, on the physical-chemical properties, as an alternative novel composition binder. Furthermore, the behaviour of the mortars based on this new combined blends was investigated in the study program, including chemical composition, density and fineness, consistency, setting time, swelling, shrinkage, absorption and mechanical behaviour. The results obtained showed that the substitution of pozzolan at the optimal ratio of 5% had a positive effect on the resulting cement properties, namely: greater specific surface area, reduced water demand, accelerated process of hydration, better mechanical behaviour and decreased water absorption. Therefore, economic and ecological cement based on mineral addition like pozzolan could be possible as well as advantageous to the formulation of environmental performance mortars.

Słowa kluczowe

EN

cement resistant to sulphate; CRS; pozzolan; environmental performance mortars; mechanical development; physical-chemical properties

• Wydawca: Wydział Geoinżynierii, Górnictwa i Geologii, Instytut Górnictwa Politechniki Wrocławskiej
• Czasopismo: Mining Science
• Rocznik: 2016
• Tom: Vol. 23
• Strony: 65--76
• Opis fizyczny: Bibliogr. 12 poz., rys., tab.

Twórcy

autor

Belagraa L.

• Department of Civil Engineering, Faculty of Technology, Med Boudiaf University of M’sila, M’sila (28 000), Algeria.
• Laboratory of Materials and Electronic Systems (LMSE), Faculty of Science and Technology, University of Bordj Bou Arréridj, El-Annasser (34030), Algeria.

autor

Bouzid A.

• Laboratory of Materials and Electronic Systems (LMSE), Faculty of Science and Technology, University of Bordj Bou Arréridj, El-Annasser (34030), Algeria.

Bibliografia

• BARON J., OLIVIER J.P., WEISS J.C., 1997. Les ciments courants, Les bétons, bases et données pour leur formulation, Edition Eyrolles, 806.
• BOUGLADA M., 2008. Effet de l'activation du ciment avec ajout minéral par la chaux fine sur le comportement mécanique du mortier, thèse de magister, département de Génie Civil. Université de M’sila, Algérie.
• CAIJUN Shi., 2001. These an overview on the activation of reactivity of natural pozzolans, Canadian Journal of Civil Engineering, Rev. can. Génie civ. 28(5), 778-786.
• CASSAGNABÈRE F., LACHEMI M., MOURET M., ESCADEILLAS G., 2011. Caractérisation performantielle d’un liant ternaire à base de ciment, laitier et métakaolin, Can. J. Civ. Eng., vol. 38, no. 8, pp. 837–848.
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• OLIVIER J.G.J., JANSSENS-MAENHOUT G., MUNTEAN M., PETERS J.A.H.W., 2015. Trends in Global CO2 Emissions. 2015 Report.
• VERNET C., CADORET G., 1991. Compterendu du Colloque «Voies Nouvelles du Béton», Suivi en continu de l'évolution chimique et mécanique des bétons à hautes performances pendant les premiers jours, Cachan, France, p. 17.

Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).