УЛУЧШЕНИЕ СВОЙСТВ САМОУПЛОТНЯЮЩИХСЯ БЕТОНОВ ПУТЕМ ВВЕДЕНИЯ НАНОКРЕМНЕЗЕМА

Y Barakat Asmaa; A Mostafa Mostafa; A Hamdy Gehan; H Ahmed Hossameldin

doi:10.22213/2410-9304-2018-3-136-146

Authors

Y. B. Asmaa Construction Research Institute, National Water Research Center
A. M. Mostafa Construction Research Institute, National Water Research Center
A. H. Gehan Benha University
H. A. Hossameldin Benha University

DOI:

https://doi.org/10.22213/2410-9304-2018-3-136-146

Keywords:

Self-compacting concrete, additives, Nanoparticles, Nano-silica, physical properties, mechanical properties

Abstract

Significant interest is recently shown in the use of materials with Nano dimensions in the construction industry. Research studies attempt to improve the properties of concrete by addition of Nano-sized materials. Self-compacting concrete (SSC) is a concrete with special mix designed to flow and consolidate under its own weight without additional compaction energy due to its properties of flowability and high segregation resistance. This paper presents an experimental program conducted to explore the influence of Nano silica additives on the physical and mechanical properties of self-compacting concrete. The research investigates the fresh properties (workability, passing ability and segregation resistance) and mechanical properties (compressive strength, splitting strength and flexural strength) of self-compacting concrete by incorporation of Nano silica with three different percentages (1%, 2% and 3%) of cement weight. Fresh properties of SCC were determined by slump, L-Box and segregation resistance tests. The mechanical characteristics were determined by compression, splitting tensile and flexural tests at different ages. The experimental results showed that using Nano silica as additive managed to improve the mechanical properties of SCC specimens.

Author Biographies

Y. B. Asmaa, Construction Research Institute, National Water Research Center

A. M. Mostafa, Construction Research Institute, National Water Research Center

A. H. Gehan, Benha University

Faculty of Engineering

H. A. Hossameldin, Benha University

Faculty of Engineering

References

C. Zekong and Y. Mao. (2015) "The research on process and application of self-compacting concrete". International Journal of Engineering Research and Applications 5(8) pp. 2248-2269.

M. Gesoglu, E. Güneyisi and E. Özbay. (2009) "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 pp. 1847-1854.

H. T. Le, M. Müller, K. Siewert and H. Ludwig. (2015) "The mix design for self-compacting high performance concrete containing various mineral admixtures". Materials and Design 72 pp. 51-62.

M. Nehdi, M. Pardhan and S. Koshowski. (2004) "Durability of self-consolidating concrete incorporating high-volume replacement composite cements". Cement and Concrete Research 34 pp. 2103-2112.

F. Sanchez and K. Sobolev. 2010) "Nanotechnology in concrete - a review". Construction and Building Materials 24 pp. 2060-2071.

G. Constantinides and F. Ulm. (2007) "The nano-granular nature of C-S-H". Journal of Mechanics and Physics of Solids pp. 5564-90.

A. Nazari and S. Riahi. (2011) "The effects of SiO2 nanoparticles on physical and mechanical properties of high strength compacting concrete". Composites: Part B 42 (3) pp. 570-578.

J. Shih, T. Chang and T. Hsiao. (2006) "Effect of nano-silica on characterization of Portland cement composite". Materials Science and Engineering A 424 (1-2) pp. 266-274.

M. Nili, A. Ehsani and K. Shabani. (2010) "Influence of nano-SiO2 and micro-silica on concrete performance". In: Proceedings of the second international conference on sustainable construction materials and technologies, June 28-30, Ancona, Italy.

M. Sonebi, E. Garcia-Taengua, K.M.A. Hossain, J. Khatib and M. Lachemi. (2015) "Effect of nanosilica addition on the fresh properties and shrinkage of mortars with fly ash and super plasticizer". Construction and Building Materials. 84 pp. 269-276.

S.W.M. Supit and F.U.A. (2015) "Durability properties of high volume fly ash concrete containing nano-silica". Materials and Structures. 48(8) pp. 2431-2445.

M.H. Zhang and J. Islam. (2012) "Use of nano-silica to reduce setting time and increase early strength of concretes with high volumes of fly ash or slag". Construction and Building Materials 29 pp. 573-580.

E. Siva Subramanian, P. Arunkumar and N. Arul. (2017) "Strength and durability properties of self-compacting concrete with micro silica and nano silica". International Research Journal of Engineering and Technology (IRJET) 4 (1) pp. 146-149.

P. Niewiadomskia, D. Stefaniuka and J. Hoła, (2017) "Microstructural analysis of self-compacting concrete modified with the addition of nanoparticles". Procedia Engineering 172 pp. 776-783.

M.H. Beigi, J. Berenjian, O.L. Omran, A.S. Nik and I.M. Nikbin. (2013) "An experimental survey on combined effects of fibers and nanosilica on the mechanical, rheological, and durability properties of self-compacting concrete". Materials and Design 50 pp. 1019-1029.

G. Quercia, P. Spiesz, G. Hüsken and H.J.H. Brouwers. (2014) "SCC modification by use of amorphous nano-silica". Cement and Concrete Composites pp. 4569-81.