EFFECT OF SiO2 CONTENT ON STRENGTH AND MICROSTRUCTURE OF BLAST FURNACE SLAG PASTE

Authors

  • Dr. Mohd. Nadeem Qureshi Head of Civil Engineering Department, Govt. Polytechnic Yavatmal
  • Dr. Somnath Ghosh Professor of Civil Engineering, Jadavpur University, Kolkata

Keywords:

Alkali-activation, Compressive Strength, Ground Granulated Blast Furnace Slag (GGBS), SiO2 Content, Scanning Electron Microscopy (SEM)

Abstract

The use of alkali-activated cementitious materials has been increased to a great extent in the recent past. The focus of this research is to investigate the effects of Silicon dioxide (SiO2) content on compressive strength and microstructure of alkali-activated blast furnace slag paste. The Ground granulated blast furnace slag (GGBS) is activated by sodium silicate and sodium hydroxide solution. SiO2 content was varied from 1.6 % to 9.61 % (wt. of dry binder) by keeping constant Na2O content and water to dry binder ratio of 0.32. It was observed that the compressive strength increases with increase in SiO2 content up to 6.4 %.  The results show that systems cured in water at room temperature exhibit maximum 28 day’s strength of 44.50 MPa. It was observed that the silica content has a significant influence on porosity and water absorption. The micro-structural changes were studied using scanning electron microscopy (SEM).

References

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Additional Files

Published

15-02-2018

How to Cite

Dr. Mohd. Nadeem Qureshi, & Dr. Somnath Ghosh. (2018). EFFECT OF SiO2 CONTENT ON STRENGTH AND MICROSTRUCTURE OF BLAST FURNACE SLAG PASTE. International Educational Applied Scientific Research Journal, 3(2). Retrieved from https://ieasrj.com/journals/index.php/ieasrj/article/view/593

Issue

Vol. 3 No. 2 (2018): FEBRUARY ISSUE, INTERNATIONAL EDUCATIONAL APPLIED SCIENTIFIC RESEARCH JOURNAL

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Articles

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