Effects of Paste Content on Flow Characteristics of SCC Containing Local Natural Pozzolan

Authors: Muhammad Nouman Haral, Abdulaziz I. Al-Negheimesh, Galal Fares, Mohammad Iqbal Khan, Abdulrahman M. Alhozaimy

Abstract:

Natural pozzolan (NP) is one of the potential prehistoric alternative binders in the construction industry. It has been investigated as cement replacement in ordinary concrete by several researchers for many purposes. Various supplementary cementitious materials (SCMs) such as fly ash, limestone dust and silica fume are widely used in the production of SCC; however, limited studies to address the effect of NP on the properties of SCC are documented. The current research is composed of different SCC paste and concrete mixtures containing different replacement levels of local NP as an alternative SCM. The effect of volume of paste containing different amounts of local NP related to W/B ratio and cement content on SCC fresh properties was assessed. The variations in the fresh properties of SCC paste and concrete represented by slump flow (flowability) and the flow rate were determined and discussed. The results indicated that the flow properties of SCC paste and concrete mixtures, at their optimized superplasticizer dosages, were affected by the binder content of local NP and the total volume fraction of SCC paste.

Keywords: Binder, fresh properties, natural pozzolan, paste, SCC.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1087157

References:

[1] Heirman G., Vandewalle L., Van Gemert D., Boel V., Audenaert K., Schutter G., Desmet B., Vantomme J., Time-dependent deformations of limestone powder type self-compacting concrete, Engineering Structures 30 (2008) 2945–2956.
[2] Hajime OKAMURA and Kazumasa OZAWA, Mix Design for Self- Compacting Concrete, Concrete Library of JSCE No.25, June, 1995, pp.107-120.
[3] Hajime OKAMURA and Masahiro OUCHI, Self-Compacting Concrete, Journal of advanced concrete technology, Vol. 1, No. 1, April-2003, pp. 5-15.
[4] Girish S. Ranganath R. Jagadish Vengala, Influence of powder and paste on flow properties of SCC, Construction and Building materials 24 (2010) 2481-2488.
[5] Roger P. Self-Compacting Concrete West, Trinity College Dublin.
[6] Hajime OKAMURA and Kazumasa OZAWA Self-compactable high performance concrete. International Workshop on High Performance Concrete. American Concrete Institute control; Detroit. 1994, pp. 31-44.
[7] Ouchi M, Hibino M, Ozawa K, and Okamura H. A rational mix-design method for mortar in self-compacting concrete. Proceedings of Sixth South-East Asia Pacific Conference of Structural Engineering and Construction. Taipei, Taiwan, 1998, pp1307-1312.
[8] Nawa T, Izumi T, and Edamatsu Y. State-of -the-art report on materials and design of self-compacting concrete. Proceedings of International Workshop on Self-compacting Concrete. August 1998; Kochi University of Technology, Japan. pp 160-190.
[9] Domone P, Chai H and Jin J. Optimum mix proportioning of selfcompacting concrete. Proceedings of International Conference on Innovation in Concrete Structures: Design and Construction, Dundee, September 1999. Thomas Telford; London. pp 277-285.
[10] Billberg, P. Mix design model for SCC (the blocking criteria). Proceedings of the first North American conference on the design and use of SCC, Chicago 2002.
[11] Aggarwal, Siddique, Aggarwal, Gupta Self-Compacting Concrete - Procedure for Mix Design, Leonardo Electronic Journal of Practices and Technologies ISSN 1583-1078, 2008.
[12] Koehler and Fowler, selecting aggregates for self-consolidating concrete, The University of Texas at Austin, Austin, Texas, USA.
[13] Khan and Alhozaimy, Properties of natural pozzolan and its potential utilization in environmental friendly concrete, Canadian Journal of Civil Engineering, Volume 38, Number 1, 1 January 2011 , pp. 71-78(8).
[14] PCA, Design and control of concrete mixtures, Fourteenth edition Voice: 847.966.6200, 2003.
[15] Shannag, High strength concrete containing natural pozzolan and silica fume, Cement & Concrete Composites 22 (2000) 399-406.
[16] EFNARC, the European Guidelines for Self Compacting Concrete, 2005.
[17] Safiuddin, West, Soudki., Flowing ability of the mortars formulated from self-compacting concretes incorporating rice husk ash, Construction and Building Materials 25 (2011) 973-978.