Influence of Silica Fume on High Strength Lightweight Concrete

Authors: H. Katkhuda, B. Hanayneh, N. Shatarat

Abstract:

The main objective of this paper is to determine the isolated effect of silica fume on tensile, compressive and flexure strengths on high strength lightweight concrete. Many experiments were carried out by replacing cement with different percentages of silica fume at different constant water-binder ratio keeping other mix design variables constant. The silica fume was replaced by 0%, 5%, 10%, 15%, 20% and 25% for a water-binder ratios ranging from 0.26 to 0.42. For all mixes, split tensile, compressive and flexure strengths were determined at 28 days. The results showed that the tensile, compressive and flexure strengths increased with silica fume incorporation but the optimum replacement percentage is not constant because it depends on the water–cementitious material (w/cm) ratio of the mix. Based on the results, a relationship between split tensile, compressive and flexure strengths of silica fume concrete was developed using statistical methods.

Keywords: Silica fume, Lightweight, High strength concrete, and Strength.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1330367

References:

[1] F.P. Zhou, B.I.G. Barr, F.D. Lydon, "Fracture properties of high strength concretes with varying silica fume content and aggregates", Cement and Concrete Research, 25 (3) (1995) 543-552.
[2] S.A. Khedr, M.N. Abou-Zeid, " Characteristics of silica-fume concrete", J. Mater. Civ. Eng. ASCE , 6 (3) (1994) 357-375.
[3] V. Yogendran, B.W. Langan, M.N. Haque, M.A. Ward, "Silica fume in high strength concrete", ACI Material Journal. 84 (2) (1982) 124-129
[4] S. Bhanjaa,*, B. Sengupta," Influence of silica fume on the tensile strength of concrete ", Cement and Concrete Research, 35 (2005) 743- 747.
[5] S. Bhanjaa,*, B. Sengupta ," Investigations on the compressive strength of silica fume concrete using statistical methods", Cement and Concrete Research, 32 (2002) 1391-1394.
[6] S. Bhanjaa,*, B. Sengupta ,"Modified water-cement ratio law for silica fume concretes", Cement and Concrete Research, 33 (2003), 447-450.
[7] Ha-Won Song, Jong-Chul Jang, Velu Saraswathy, Keun-Joo Byun," An estimation of the diffusivity of silica fume concrete", Building and Environment, 42 (2007) 1358-1367.
[8] M. Mazloom a,*, A.A. Ramezanianpour b, J.J. Brooks ," Effect of silica fume on mechanical properties of high-strength concrete", Cement & Concrete Composites ,26 (2004) 347-357.
[9] Harun Tanyildizi, Ahmet Coskun , "Performance of lightweight concrete with silica fume after high temperature", Construction and Building Materials, Volume 22, Issue 10, October 2008, Pages 2124-2129
[10] Emre Sancak, Y. Dursun Sari, Osman Simsek, "Effects of elevated temperature on compressive strength and weight loss of the light-weight concrete with silica fume and superplasticizer", Cement and Concrete Composites, Volume 30, Issue 8, September 2008, Pages 715-721
[11] Harun Tanyildizi , "Statistical analysis for mechanical properties of polypropylene fiber reinforced lightweight concrete containing silica fume exposed to high temperature", Materials & Design, Volume 30, Issue 8, September 2009, Pages 3252-3258.
[12] K. Ganesh Babu, D. Saradhi Babu , "Behaviour of lightweight expanded polystyrene concrete containing silica fume", Cement and Concrete Research, Volume 33, Issue 5, May 2003, Pages 755-762.
[13] B. González-Fonteboa, F. Martínez-Abella ,"Concretes with aggregates from demolition waste and silica fume, Materials and mechanical properties", Building and Environment, Volume 43, Issue 4, April 2008, Pages429-437.
[14] G. Appa Rao ,"Investigations on the performance of silica fumeincorporated cement pastes and mortars", Cement and Concrete Research, 33 (2003) 1765-1770.
[15] Bing Chen, Juanyu Liu, "Properties of lightweight expanded polystyrene concrete reinforced with steel fiber", Cement and Concrete Research, 34 (2004) 1259-1263.
[16] Robert Le Roy, Edouard Parant, Claude Boulay," Taking into account the inclusions- size in lightweight concrete compressive strength prediction", Cement and Concrete Research ,35 (2005) 770- 775.
[17] D. Saradhi Babua,T, K. Ganesh Babu, T.H. Weea, "Properties of lightweight expanded polystyrene aggregate concretes containing fly ash", Cement and Concrete Research ,35 (2005) 1218- 1223.
[18] X. Cong, S. Gong, D. Darwin, S.L. McCabe, "Role of silica fume in compressive strength of cement paste, mortar, and concrete", ACI Material Journal, 89 (4) (1992) 375- 387.
[19] A.M. Neville, Properties of Concrete, 4th ed., ELBS with Addison Wesley Longman, England, 1996.