The Effect of Magnesium Oxide Nano Particles on the Mechanical and Practical Properties of Self-Compacting Concrete

Document Type : Original Article

Authors

Department of Civil Engineering, Shiraz Branch, Islamic Azad University, Shiraz, Iran.

10.15412/J.JCEMA.12010205

Abstract

One of the most important advances in the civil engineering industry is the application of nanotechnology and concrete performance in combination with some materials in order to improve their properties, behavior and structure, as well as the use of nanomaterials to produce high performance and multi-purpose concrete. Concretes properties, behavior and performance depends on the nanostructure of concrete and cement material which creates adhesion, cohesion and integrity. Therefore, concrete studies at the nanoscale are very important to develop new concrete materials and their applications. In this research, the effect of magnesium oxide (MgO) nanoparticles on the mechanical and practical properties of self-compacting concrete was investigated. Here, self-compacting concrete with different percentages of 1, 2, 3, and 4 of cement weight was made from MgO nanoparticles, and experiments of slump flow, slump flow T = 50 cm, L-box, U-box and V-funnel tests were conducted. The results showed that adding MgO nanoparticles of 2% by weight of cement to self- compacting concrete, increases compressive, tensile and flexural strength respectively by 33%, 20% and 59% at the age of 28-days.

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References

1. Gao P-w, Wu S-x, Lu X-l, Deng M, Lin P-h, Wu Z-r, et al. Soundness evaluation of concrete with MgO. Construction and Building Materials. 2007;21(1):132-8.
2. Snyder KA, Lew HS. Alkali-Silica Reaction Degradation of Nuclear Power Plant Concrete Structures: A Scoping Study. NIST Interagency/Internal Report (NISTIR)-7937. 2013.
3. Moradpour R, Taheri-Nassaj E, Parhizkar T, Ghodsian M. The effects of nanoscale expansive agents on the mechanical properties of non-shrink cement-based composites: The influence of nano-MgO addition. Composites Part B: Engineering. 2013;55:193-202.
4. Mo L, Deng M, Tang M, Al-Tabbaa A. MgO expansive cement and concrete in China: Past, present and future. Cement and Concrete Research. 2014;57:1-12.
5. Yuan H, Shi Y, Xu Z, Lu C, Ni Y, Lan X. Effect of nano-MgO on thermal and mechanical properties of aluminate cement composite thermal energy storage materials. Ceramics International. 2014;40(3):4811-7.
6. Polat R, Demirboğa R, Khushefati WH. Effects of nano and micro size of CaO and MgO, nano-clay and expanded perlite aggregate on the autogenous shrinkage of mortar. Construction and Building Materials. 2015;81:268-75.
7. Ye Q, Yu K, Zhang Z. Expansion of ordinary Portland cement paste varied with nano-MgO. Construction and Building Materials. 2015;78:189-93.
8. Ding Y, Zhang G, Wu H, Hai B, Wang L, Qian Y. Nanoscale magnesium hydroxide and magnesium oxide powders: control over size, shape, and structure via hydrothermal synthesis. Chemistry of materials. 2001;13(2):435-40.
9. Chloride C, CHLORIDE A. Material safety data sheet. 2005.
10. EFNARC F. Specification and guidelines for self-compacting concrete. European 29 Federation of National Associations Representing producers and applicators of specialist 30 building products for Concrete (EFNARC). 2002;32:31.
11. Brouwers H, Radix H. Self-compacting concrete: theoretical and experimental study. Cement and Concrete Research. 2005;35(11):2116-36.
Journal of Civil Engineering and Materials Application
Volume 1, Issue 2
September 2017
Pages 77-87

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History

  • Receive Date: 25 June 2017
  • Revise Date: 16 July 2017
  • Accept Date: 14 September 2017

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