International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2568

Full Length Research Paper

A new pozzolanic material for cement industry: Bamboo leaf ash

V.N. Dwivedia , N.P.Singhb , S.S.Dasa  and N.B.Singha*
aDepartment of Chemistry, DDU Gorakhpur University, Gorakhpur, India. bDepartment of Chemistry, U P Autonomous College, Varanasi, India.
Email: [email protected]

  •  Accepted: 02 November 2006
  •  Published: 30 November 2006

Abstract

Bamboo leaf fired in an open atmosphere and then heated at 600oC for 2h in a furnace was found to be an amorphous material containing amorphous silica. The ash was characterized by chemical analysis, powder X-ray diffraction and SEM techniques. Reactions of the ash with calcium hydroxide showed it to be pozzolanic in nature. The pozzolanic reactivity increased with time and temperature. When 20 wt% bamboo leaf ash was mixed with Portland cement, the compressive strength at 28 days of hydration was comparable to that without ash. This was due to pozzolanic reactions. The mechanism of pozzolanic reactivity has been discussed.

 

Keywords: Bamboo leaf ash, Pozzolana, Portland cement, Hydration, Calcium hydroxide

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