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Journal of Central South University of Technology

, Volume 16, Issue 6, pp 914–918 | Cite as

Preparation and properties of geopolymer-lightweight aggregate refractory concrete

  • Shu-guang Hu (胡曙光)
  • Jing Wu (吴 静)Email author
  • Wen Yang (杨 文)
  • Yong-jia He (何永佳)
  • Fa-zhou Wang (王发洲)
  • Qing-jun Ding (丁庆军)
Article

Abstract

Geopolymer-lightweight aggregate refractory concrete (GLARC) was prepared with geopolymer and lightweight aggregate. The mechanical property and heat-resistance (950 °C) of GLARC were investigated. The effects of size of aggregate and mass ratio of geopolymer to aggregate on mechanical and thermal properties were also studied. The results show that the highest compressive strength of the heated refractory concrete is 43.3 MPa, and the strength loss is only 42%. The mechanical property and heat-resistance are influenced by the thickness of geopolymer covered with aggregate, which can be expressed as the quantity of geopolymer on per surface area of aggregate. In order to show the relationship between the thickness of geopolymer covered with aggregate and the thermal property of concrete, equal thickness model is presented, which provides a reference for the mix design of GLARC. For the haydite sand with size of 1.18–4.75 mm, the best amount of geopolymer per surface area of aggregate should be in the range of 0.300–0.500 mg/mm2.

Key words

refractory concrete geopolymer lightweight aggregate thermal property equal thickness model 

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Copyright information

© Central South University Press and Springer Berlin Heidelberg 2009

Authors and Affiliations

  • Shu-guang Hu (胡曙光)
    • 1
  • Jing Wu (吴 静)
    • 1
    Email author
  • Wen Yang (杨 文)
    • 2
  • Yong-jia He (何永佳)
    • 1
  • Fa-zhou Wang (王发洲)
    • 1
  • Qing-jun Ding (丁庆军)
    • 1
  1. 1.Key Laboratory for Silicate Materials Science and Engineering, Ministry of EducationWuhan University of TechnologyWuhanChina
  2. 2.China Construction Ready Mixed Concrete Co. Ltd.WuhanChina

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