9th International Science Congress (ISC-2019).  International E-publication: Publish Projects, Dissertation, Theses, Books, Souvenir, Conference Proceeding with ISBN.  International E-Bulletin: Information/News regarding: Academics and Research

Effect of Micro Silica on The Strength of Concrete with Ordinary Portland Cement

Author Affiliations

  • 1 Structural Engineering Department, Jabalpur Engineering College, Jabalpur, MP, INDIA
  • 2 Civil Engineering Department, Jabalpur Engineering College, Jabalpur, MP, INDIA

Res. J. Engineering Sci., Volume 1, Issue (3), Pages 1-4, September,26 (2012)

Abstract

Concrete is the most important engineering material and the addition of some other materials may change the properties of concrete. With increase in trend towards the wider use of concrete for prestressed concrete and high rise buildings there is a growing demand of concrete with higher compressive strength. Mineral additions which are also known as mineral admixtures have been used with cements for many years. There are two tpes of materials crystalline and non crystalline. Micro silica or silica fume is very fine non crystalline material. Silica fume is produced in electric arc furnace as a by product of the production of elemental silicons or alloys containing silicon. IT is usually a gray coloured powder somewhat similar to portland or some fly ashes silica fume is generally categorized as a supplymentry cementitious material. Silica fume or micro silica was initially vied as cement rplacement material and in some area it is usually used as replaced by much smaller quantity of silica fume micro silica may be used as pozzolanic admixtures. Admixture is defined as a material other than cement water and aggregate that is used as ingredient of concrete and is added to the batch immediately before or during mixing. Pozzolanic admixtures are siliceous or aluminous material which is themselves posses little or no cementitious value but will in finely divided form and in the presence of water chemically react with calcium hydroxide liberated on hydration at ordinary temperature to form compounds possessing cementitious properties. In our experiment we are using micro silica as a artificial pozzolans. We are adding 0%, 5%, 10%, 15% by wt of cement in concrete.

References

  1. Silica fume manual by Oriental Trexim Pvt. Ltd. (2003)
  2. Shetty M.S., Concrete Technology, S. Chand and Company Pvt Ltd. New Delhi, India (1999)
  3. Ha-Won Song, Seung-Woo Pack, Sang-Hyeok Nam, Jong-Chul Jang and Velu Saraswathy, Estimation of the permeability of silica fume cement concrete,Construction and building material, 24, 315-321 (2010)
  4. Abdullah A. Almusallam, Hamoud Beshr, Mohammed Maslehuddin and Omar S.B. Al-Amoudi, Effect of silica fume on the mechanical properties of low quality coarse aggregate concrete, Cement and Concrete Composites, 26,891900 (2004)
  5. IS 456-2000 Plain and reinforced concrete code of practice (2000)
  6. Krishna M.V., Rao P., Kumar Ratish and Khan Azhar M., A study on the influence of curing on the strength of a standard grade concrete mix, Architecture and Civil Engineering,8(1), 2334 (2010)
  7. Bhanjaa S. and Sengupta B.,Influence of silica fume on the tensile strength of concrete, Cement and Concrete Research, 35, 743747 (2005)
  8. IS 10262 -2009Indian Standardrecommended guide lines for concrete mix design (2009)
  9. IS 383-1970 code for properties of aggregates (1970)
  10. ACI report 234R-96 (2000)