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Effect of rice husk ash on workability and strength of concrete

Conference Paper


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Abstract


  • Rice husk ash (RHA) is an agricultural waste which is a pozzolanic material that can be

    blended with the cement for manufacturing concrete. Its use can reduce the environmental impact of the

    cement industry. The present study investigates the chemical and morphological nature of RHA and silica

    fume (SF). Both can be used to improve strength and durability properties of concrete. Particle size

    distribution, loss on ignition (LOI), X-ray diffraction analysis, scanning electron microscopic were

    conducted. The effect of replacement of cement 5%, 10% and 15% by weight with SF and RHA on

    compressive strength and workability has also been investigated for 32 MPa grade concrete blended with

    30% Fly ash. The results show that concrete mixed with RHA had better strength than a similar mix with

    Silica Fume. RHA required additional amount of superplasticizer to improve the workability of concrete. In

    order to reduce the carbon footprint associated with cement industry, this paper gives satisfactory results

    to use RHA in sustainable construction.

Authors


  •   Srinivasreddy, Avinash Babu (external author)
  •   McCarthy, Timothy J.
  •   Lume, Eric (external author)

Publication Date


  • 2013

Citation


  • Srinivasreddy, A., McCarthy, T. J. & Lume, E. (2013). Effect of rice husk ash on workability and strength of concrete. 26th Biennial Concrete Institute of Australia’s National Conference (Concrete 2013) (pp. 1-10). Australia: Concrete Institute of Australia.

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=3013&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/2004

Start Page


  • 1

End Page


  • 10

Abstract


  • Rice husk ash (RHA) is an agricultural waste which is a pozzolanic material that can be

    blended with the cement for manufacturing concrete. Its use can reduce the environmental impact of the

    cement industry. The present study investigates the chemical and morphological nature of RHA and silica

    fume (SF). Both can be used to improve strength and durability properties of concrete. Particle size

    distribution, loss on ignition (LOI), X-ray diffraction analysis, scanning electron microscopic were

    conducted. The effect of replacement of cement 5%, 10% and 15% by weight with SF and RHA on

    compressive strength and workability has also been investigated for 32 MPa grade concrete blended with

    30% Fly ash. The results show that concrete mixed with RHA had better strength than a similar mix with

    Silica Fume. RHA required additional amount of superplasticizer to improve the workability of concrete. In

    order to reduce the carbon footprint associated with cement industry, this paper gives satisfactory results

    to use RHA in sustainable construction.

Authors


  •   Srinivasreddy, Avinash Babu (external author)
  •   McCarthy, Timothy J.
  •   Lume, Eric (external author)

Publication Date


  • 2013

Citation


  • Srinivasreddy, A., McCarthy, T. J. & Lume, E. (2013). Effect of rice husk ash on workability and strength of concrete. 26th Biennial Concrete Institute of Australia’s National Conference (Concrete 2013) (pp. 1-10). Australia: Concrete Institute of Australia.

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=3013&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/2004

Start Page


  • 1

End Page


  • 10