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ISSN: 2321-9939 | ESTD Year: 2013

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Paper Title
Partial replacement of cement concrete by waste materials
  Kunchala Anjaneyulu

The aim of the study is to reduce the corn cob and saw dust waste materials and reduce the cost of concrete. Chemical composition of corn cob ash (CCA) and saw dust ash (SDA) as well as the workability and compressive strength properties of varying percentage of corn cob ash and saw dust ash cement concrete and 100% cement concrete of mixing ratios 1: 1.5: 3, 1:1:2 and water – cement ratios of 0.5 which later increased to 0.6 were examined and compared. Slump test was carried out to check the effect of corn cob ash and saw dust ash on the workability of fresh concrete. A total of 90 concrete cubes of size 150mm x 150mm x 150mm with different percentages by weight of corn cob ash and Saw dust ash to Portland cement in the order of 0%, 10% and 15% were cast. The concrete cubes were tested at the ages of 7, 14, 21, 28 and 56 days. The results showed that the corn cob ash and saw dust ash are a good pozzolans. The slump value decreased as the CCA and SDA contents increased indicating that concrete becomes less workable as the ashes content increased. The compressive strength of the concrete cubes increased as the days of curing increased and decreased with increasing ashes replacement. The highest compressive strength was 24.9N/mm2 and 22.4N/mm2 at 56 days for 0% and 10% of CCA (M25) and 24.9N/mm2, 23.9N/mm2 for SDA (M25) respectively. It was concluded that the use of CCA and SDA as a partial replacement for cement in concrete, particularly in plain concrete works and non – load bearing structures, will improve waste to wealth initiative though only 10% CCA and SDA replacement is adequate to enjoy maximum benefit of strength gain.

Keywords- Compressive strength, Corn cob ash, Saw dust ash.
Publication Details
Unique Identification Number - IJEDR1702215
Page Number(s) - 1374-1383
Pubished in - Volume 5 | Issue 2 | May 2017
DOI (Digital Object Identifier) -   
Publisher - IJEDR (ISSN - 2321-9939)
Cite this Article
  Kunchala Anjaneyulu,   "Partial replacement of cement concrete by waste materials", International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.5, Issue 2, pp.1374-1383, May 2017, Available at :http://www.ijedr.org/papers/IJEDR1702215.pdf
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