Influence of Metakaolin and Cements Types on Compressive Strength and Transport Properties of Self-Consolidating Concrete

Authors: Kianoosh Samimi, Farhad Estakhr, Mahdi Mahdikhani, Faramaz Moodi

Abstract:

The self-consolidating concrete (SCC) performance over ordinary concrete is generally related to the ingredients used. The metakaolin can modify various properties of concrete, due to high pozzolanic reactions and also makes a denser microstructure. The objective of this paper is to examine the influence of three types of Portland cement and metakaolin on compressive strength and transport properties of SCC at early ages and up to 90 days. Six concrete mixtures were prepared with three types of different cements and substitution of 15% metakaolin. The results show that the highest value of compressive strength was achieved for Portland Slag Cement (PSC) and without any metakaolin at age of 90 days. Conversely, the lowest level of compressive strength at all ages of conservation was obtained for Pozzolanic Portland Cement (PPC) and containing 15% metakaolin. As can be seen in the results, compressive strength in SCC containing Portland cement type II with metakaolin is higher compared to that relative to SCC without metakaolin from 28 days of age. On the other hand, the samples containing PSC and PPC with metakaolin had a lower compressive strength than the plain samples. Therefore, it can be concluded that metakaolin has a negative effect on the compressive strength of SCC containing PSC and PPC. In addition, results show that metakaolin has enhanced chloride durability of SCCs and reduced capillary water absorption at 28, 90 days.

Keywords: SCC, metakaolin, cement type, compressive strength, chloride diffusion.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1315975

References:

[1] Okamura H, Ouchi M. Self-compacting concrete. Journal of advanced concrete technology 2003;1:5-15.
[2] Mahdikhani M, and Ramezanianpour A.A. New methods development for evaluation rheological properties of self-consolidating mortars. Construction and Building Materials 2015; 75: 136-143.
[3] Audenaert, K., Boel, V. and De Schutter, G., ‘Chloride penetration in self-compacting concrete by cyclic immersion’, in Proc. SCC’2005-China, May 2005 (RILEM PRO 42) 355-362.
[4] Nguyen V.H., Nedjar B., Colina H., Torrenti J.M., «A separation of scales analysis for the modelling of calcium leaching in concrete», Computer methods in applied mechanics and engineering, 195, 7196-7210, 2006.
[5] Page CL, Short NR, El Tarras A. Diffusion of chloride ions in hardened cement pastes. Cem Concr Res 1981;11:395–406.
[6] Sonebi M., Bahadori-Jahromi, A., Bartos, P.J.M., «Development and optimization of medium strength self-compacting concrete by using pulverized fly ash», 3rd International Symposium on Self-Compacting Concrete, Reykjavik, Iceland, 514-524, 2003.
[7] Park C.K., Noh M.H., Park T.H., «Rheological properties of cementitious materials containing mineral admixtures», Cement and Concrete Research, 35, 842-849, 2005.
[8] Fereshteh Alsadat Sabet, N. A. (2013). Mechanical and durability properties of self consolidating high performance concrete incorporating natural zéolite, silica fume and fly ash. Construction and Building Materials, 44, 175–184.
[9] Felekoglu B., Yardimci M. Y. and Baradan B., “A comparative study on the use of mineral and chemical types of viscosity enhancers in self-compacting concrete”, Proceedings of 3rd International RILEM Symposium on Self-Compacting Concrete (PRO 33), Reykjavik, Iceland, pp. 446-456, 17-20 août 2003.
[10] Vejmelkovaa E, Kepperta M, Grzeszczykb S, Skalin´ skib B, Cˇ erny´ a B. Properties of self- compacting concrete mixtures containing métakaolin and blast furnace slag. Constr Build Mater 2011;25:1325–31.
[11] AFGC 00 Association Française de Génie Civil, « Bétons autoplaçants- Recommandations provisoires », Annales du bâtiment et des travaux publics, juin 2000.
[12] EFNARC. Specifications and guidelines for self-consolidating concrete. Surrey, UK: European Federation of Suppliers of Specialist Construction Chemicals (EFNARC); 2002.
[13] Paiva H, Velosa A, Cachim P, Ferreira VM. Effect of metakaolin dispersion on the fresh and hardened state properties of concrete. Cement and Concrete Research. 2012;42(4):607-12.
[14] BS 8110: part1: 1997, building and civil engineering structures, to subcommittee B/525/2, structural use of concrete.
[15] Arliguie, G. et Hornain, H. Grandeurs associées à la Durabilité des Bétons. AUGC, AFGC, Presses de l’ENPC, 2007, p. 437.
[16] Tange Jepsen M, Munch-Petersen C, Bager D (2001) Durability of resource saving “green” types of concrete, featured at the proceedings FIB-symposium “Concrete and environment”. Berlin; October.