Comparing Between the Effects of Limestone and Viscosity-Modifying Admixture on the Rheology of Self-Compacting Concrete Under Different Ambient Conditions

Document Type : p

Authors

1 Maintenance Engineering, Faculty of Defense Sciences and Engineering, Imam Hossein University, Tehran, Iran.

2 PhD student in Construction and Management Engineering, Islamic Azad University, South Tehran Branch, Tehran, Iran.

Abstract

The effect of hot climate on the performance of fresh self-compacting concrete causes a number of problems including the reduced workability. This issue is due to the various demands of the fresh self-compacting concrete, much more complicated mix design and low yield stress of this type of concrete. Therefore, in design of the self-compacting concrete, in addition to the constituent elements the ambient conditions also are taken into consideration. In this research, the self-compacting concrete specimens with different amounts of limestone and viscosity-modifying admixture were made. Also the temperature of the concrete mixtures was selected with respect to the ambient conditions of different seasons. After the concrete specimen temperature reached the ambient temperature, the rheological properties of the fresh self-compacting concrete specimens containing limestone or viscosity-modifying admixture being a function of mixing time, and temperature with water to cement ratio of 0.42 were investigated. According to the obtained results the viscosity-modifying admixture has a better effect on the plastic viscosity with respect to limestone and reduces the slump loss by 50%. Thus in the hot climate where our goal is to maintain workability, the concretes with viscosity-modifying agents are the best options.

Keywords

References

[1] Abbasi, F.A. and Al-Tayyib, A.J., "Effect of hot climate on shear strength of concrete." Transportation Research Record, 924, p. 27-32, 1983.
[2] Abbasi, A.G.F., Al-Tayyib, A.H.J. and Al-Ali, M.B., "Effect of hot weather on strength of reinforced concrete beams." Cement and Concrete Composites, 14(3): p. 209-221, 1992.
[3] El-Rayyes, M.S. "Remedies to rapid setting in hot-weather concreting." Admixtures for Concrete-Improvement of Properties: Proceedings of the International RILEM Symposium. Vol. 5. CRC Press, 1990.
[4] De Schutter, G., Bartos, P.J., Domone, P. and Gibbs, J., "Self-compacting concrete." Caithness: Whittles Publishing, 2008.
[5] Al-Martini, S. and Nehdi, M., "Effect of chemical admixtures on rheology of cement paste at high temperature." Journal of ASTM International, 4(3): p. 1-17, 2007.
[6] Brameshuber, W. and Uebachs, S., "The influence of the temperature on the rheological properties of self-compacting concrete." Proc. Third Int. RILEM Symposium (Ed. Wallevik, O. and Nielsson, I.), 2003.‏
[7] Golaszewski, J., "Effect of temperature on rheological properties of superplasticized cement mortars." Special Publication 239, p. 423-440, 2006.
[8] Petit, J.Y., Wirquin, E., Vanhove, Y. and Khayat, K., "Yield stress and viscosity equations for mortars and self-consolidating concrete." Cement and concrete research, 37(5): p. 655-670, 2007.
[9] Petit, Jean-Yves, Kamal H. Khayat, and Eric Wirquin. "Coupled effect of time and temperature on variations of plastic viscosity of highly flowable mortar." Cement and Concrete Research, 39(3): p. 165-170, 2009.
[10] ACI Committee 305.1-06. "Specification for hot weather concreting." Detroit: American Concrete Institute, 2007.
[11] Barnes, B.D., Orndorff, R.L. and Roten, J.E., "Low initial curing temperature improves the strength of concrete test cylinders." Journal Proceedings. 74(12), p. 612-615, 1977.
[12] ACI 237R-07, "Self-consolidating Concrete." American Concrete Institute, 2007.
[13] Kosmatka, S.H., Kerkhoff, B. and Panarese, W.C., "Design and control of concrete mixtures, " Skokie, IL: Portland Cement Association,Vol. 5420, 2002.
[14] Neville, A.M. and Brooks, J.J., "Concrete technology (the second edition)." 2010.
[15] Schmidt, W., Brouwers, H.J.H., Kuehne, H.C. and Meng, B., "Effects of the characteristics of high range water reducing agents and the water to powder ratio on rheological and setting behavior of self-consolidating concrete." Advances in Civil Engineering Materials, 3(2): p. 127-141, 2014.
[16] Schmidt, W., Brouwers, H.J.H., Kühne, H. C. and Meng, B., "Influences of superplasticizer modification and mixture composition on the performance of self-compacting concrete at varied ambient temperatures." Cement and Concrete Composites, 49, p. 111-126, 2014.
[17] Schmidt, W., Brouwers, J., Kühne, H.C., and Meng, B., "Effects of superplasticizer and viscosity-modifying agent on fresh concrete performance of SCC at varied ambient temperatures." In Design, Production and Placement of Self-Consolidating Concrete, p. 65-77, 2010.
[18] Diawara, H. and Ghafoori, N., "Influence of Combined Hauling Time and Temperature on Flow Properties of Self-Consolidating Concrete: Retempering Remediation." Journal of Materials in Civil Engineering, 24(1), p 1-7, 2012.
[19] Team, PCI Self-Consolidating Concrete FAST. "Interim Guidelines for the Use of Self-Consolidating Concrete in PCI Member Plants." PCI Journal, 48(3): p. 14-18, 2003.
[20] Heirman, G., Hendrickx, R., Vandewalle, L., Van Gemert, D., Feys, D., De Schutter, G., Desmet, B. and Vantomme, J., "Integration approach of the Couette inverse problem of powder type self-compacting concrete in a wide-gap concentric cylinder rheometer: Part II. Influence of mineral additions and chemical admixtures on the shear thickening flow behaviour." Cement and Concrete research, 39(3): p. 171-181, 2009.
[21] Standard, B. S. "Part 116." Standard test method for compressive strength of cubic concrete specimens: British Standards Institution, 1881.
[22] Mueller, F.V. and Wallevik, O.H., "Effect of Limestone Filler Addition in Eco-SCC: Design, Production and Placement of Self-Consolidating Concrete." Proceedings of SCC2010, Montreal, Canada: p. 26-29, 2010.
[23] Gesoğlu, M., Güneyisi, E. and Özbay, E., "Properties of self-compacting concretes made with binary, ternary, and quaternary cementitious blends of fly ash, blast furnace slag, and silica fume." Construction and Building Materials 23(5): p. 1847-1854, 2009.‏
[24] Li, B., Wang, J. and Zhou, M., "Effect of limestone fines content in manufactured sand on durability of low-and high-strength concretes." Construction and Building Materials 23(8): p. 2846-2850, 2009.
[25] Li, B., Ke, G. and Zhou, M., "Influence of manufactured sand characteristics on strength and abrasion resistance of pavement cement concrete." Construction and Building Materials 25(10): p. 3849-3853, 2011.‏
[26] EFNARC, EFCA. "Guidelines for Viscosity Modifying Admixtures For Concrete." 2006.

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