Using silica fume in ultra high performance concrete production

Abstract: 148 | PDF: 196

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Author

  • Bach Quoc Si

Keywords:

modeling
cement paste
concrete
compressive strength
hydration

Abstract

The Reactive Powder Concrete (RPC) is Ultra-High Performance Concrete (UHPC). It was developed in the years 1990 by a French company which used small aggregates and the ultrafine such as the silica fume (SF) to reach a high compact. RPC is characterized via a very low water to cement ratio (W/C) which is the source of the small volume of total pore and high volume of solid components. These characteristics RPC can lead up to the high compressive strength in the material concrete.
Based on the existing experimental data on the compressive strength of the different concrete mixes, the article analyzes the impact of the SF concentration on the compressive strength of the samples. This impairment is related to calcium hydrosilicate (CSH) gel content in concrete. The CSH content is calculated based on a simulation program for the hydration of the Portland cement (OPC) blended with SF, thereby quantifiable components solid phase, liquid phase as well as the pore in concrete are identified. The simulation of hydration of the OPC blended with SF is verified through experiments to measure the heat developed in the concrete and the pore in paste due to the hydration reaction.

References

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Published

Nov 30, 2015
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How to Cite
Bach Quoc Si. “Using Silica Fume in Ultra High Performance Concrete Production”. The University of Danang - Journal of Science and Technology, vol. 11, no. 96.2, Nov. 2015, pp. 155-9, https://jst-ud.vn/jst-ud/article/view/3179.

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