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

Bulletin of materials science

A K Das¹  S Das²  A Basumajumdar¹  S Maitra² 

[1] Department of Chemical Technology, University of Calcutta, Kolkata 700 009, India$$Department of Chemical Technology, University of Calcutta, Kolkata 700 009, IndiaDepartment of Chemical Technology, University of Calcutta, Kolkata 700 009, India$$;Government College of Engineering and Ceramic Technology, WB University of Technology, Kolkata 700 010, India$$Government College of Engineering and Ceramic Technology, WB University of Technology, Kolkata 700 010, IndiaGovernment College of Engineering and Ceramic Technology, WB University of Technology, Kolkata 700 010, India$$

关键词: Fly ashâ€�?�lime;    compacts;    curing;    heat treatment.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

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.

【 授权许可】

Unknown