Bulletin of Materials Science

, Volume 28, Issue 7, pp 697–702 | Cite as

Effect of heat treatment on properties of steam cured fly ash-lime compacts

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Abstract

Four different varieties of class F fly ashes, collected from different sources from the state of West Bengal (India) were mixed with lime in 9 : 1 wt ratio, followed by compaction of the mixes. The compacts were subjected to steam curing to develop an optimum strength by the reaction between fly ash and lime. The steam cured compacts were heated at different elevated temperatures and free lime content, compressive strength, bulk density and water absorption tendency of these compacts were measured and FTIR spectral changes were studied as a function of the heating temperatures. Kinetics of thermal dehydration of the compacts was also studied from thermogravimetric measurements under non-isothermal condition to ascertain the order of dehydration process and the associated activation energy.

Keywords

Fly ash-lime compacts curing heat treatment 

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Copyright information

© Indian Academy of Sciences 2005

Authors and Affiliations

  1. 1.Government College of Engineering and Ceramic TechnologyWB University of TechnologyKolkataIndia
  2. 2.Department of Chemical TechnologyUniversity of CalcuttaKolkataIndia

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