Effect of water-cement ratio on abrasive strength, porosity and permeability of nano-silica concrete

Shamsai, A ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. Publisher: 2012
  3. Abstract:
  4. Today, due to rapid development of construction of hydraulic structures like dams, the constituent material used in concrete and its durability in these kinds of structures has gained dominant interests and importance. One of the important factors of concrete durability in these structures is its resistance against abrasion due to crash of particles carried out as hydrated crystalline particulate matter. To enhance the abrasion resistance of concrete, different methods have been offered and investigated by many research3ers/ The aim of present article is to investigate the important parameter i.e. water-cement ratio on abrasive strength, porosity and the coefficient of hydraulic conductivity of nanosilica concrete. The water-cement ratio is one of the key factors effecting on concrete properties. Abrasive resistance, porosity, efficiency and like all are directly or indirectly affected by the above parameters. In engineering work the underlying assumption is the fact that the compressive strength of the concrete gained on a specific temperature depends on two factors including water cement ratio and degree of density. The fine nanosilica powder originated from the furnace of alloy manufacturers enriched super-pozzolan mixed with cement mortar made an improved concrete with high strength and abrasive resistance. Furthermore, the nanosilica being extremely fine particles can easily penetrate through entire concrete pores; resulted in reduction of permeability and porosity of concrete
  5. Keywords:
  6. Abrasive strength ; Hydraulic conductivity coefficient ; Hydraulic structure Nanosilica concrete ; Porosity ; Water-cement ratio
  7. Source: World Applied Sciences Journal ; Volume 17, Issue 8 , 2012 , Pages 929-933 ; 18184952 (ISSN)
  8. URL: http://www.idosi.org/wasj/wasj17%288%2912/1.pdf