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The effect of nano-size additives on the electrical conductivity of matrix suspension and properties of self-flowing low-cement high alumina refractory castables

Otroj, S ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1016/j.ceramint.2010.02.008
  3. Abstract:
  4. Influence of two nano-size additives oSubject:A. Suspensions. Subject:C. Electrical conductivity. Subject:Castable. Subject:E. Refractories. Subject:Castables. Subject:Electrical conductivity. Subject:Electrical property. Subject:High alumina. Subject:matrix. Subject:Mechanical strength. Subject:Nano-size. Subject:Polycarboxylate ethers. Subject:Refractory castables. Subject:Working time. Subject:Alumina. Subject:Cement additives. Subject:Electric conductivity. Subject:Ethers. Subject:Suspensions (fluids) Subject:Refractory materials. n electrical properties of suspension matrix of self-flowing low-cement high alumina refractory castable is investigated. For this purpose, castament FS 10 and FS 20 on the basis of polycarboxylate ether were considered. The self-flow value, workability and mechanical strength of the castable are evaluated and their relations with electrical conductivity are determined. Using these relations, the type and optimum amount of proper additive for these refractory castables are determined. It was shown that if the electrical conductivity of matrix suspension is less than 0.71 mS/cm, high alumina low-cement self-flowing refractory castable can be obtained. The best self-flow, sufficient working time and adequate mechanical strength in the castables are obtained with 0.08 wt.% FS 20
  5. Keywords:
  6. A. suspensions ; C. electrical conductivity ; Castable ; E. refractories ; Castables ; Electrical conductivity ; Electrical property ; High alumina ; Matrix ; Mechanical strength ; Nano-size ; Polycarboxylate ethers ; Refractory castables ; Working time ; Alumina ; Cement additives ; Electric conductivity ; Ethers ; Suspensions (fluids) ; Refractory materials
  7. Source: Ceramics International ; Volume 36, Issue 4 , 2010 , Pages 1411-1416 ; 02728842 (ISSN)
  8. URL: http://www.sciencedirect.com/science/article/pii/S0272884210000647