PLASMA VITRIFIED AIR POLLUTION CONTROL (APC) RESIDUES AS POZZOLANIC ADDITIVE TO CEMENT
APC residues are generated from the air pollution abatement systems at energy from waste (EfW) plants processing municipal solid waste. They are classified as hazardous waste because of high alkalinity, heavy metals and soluble salt content. DC plasma technology can treat APC residues combined with glass forming additives at temperatures above 1400℃ to produce a stable, non-hazardous inert glass that has potential to be beneficially reused. A number of industrial waste materials such as pulverised fuel ash (PFA) and ground granulated blast furnace slag (GGBFS) can improve the properties of cement mortars and concretes due to their pozzolanic activity. Pozzolanic materials are siliceous or silico-aluminous materials which do not harden when mixed with water but in finely divided form and in the presence of moisture, chemically react with calcium hydroxide at ambient temperature to form compounds that possess cementing properties. The aim of this research was to report the pozzolanic activity of plasma treated APC residues and the properties of cementitious material prepared with them. Results showed that APC residues plasma derived glass is pozzolanic and can be used as an additive to cement. Cement pastes prepared with fritted APC glass have similar or higher strengths than Portland cement if the substitution is≤40％. The strength of the pastes increases with increasing curing time and fritted APC glass is a more active pozzolan than air-cooled APC glass. The research demonstrates that APC residues can be diverted away from landfill and transformed into products for use in construction materials.
Pozzolanic APC residues blended cement waste management plasma treatment energy from waste waste to energy incineration
I. KOURTI D. AMUTHA RANI D. DEEGAN A.R. BOCCACCINI C.R.CHEESEMAN
Dept. of Civil and Environmental Engineering, Imperial College London, London, UK Dept. of Civil and Environmental Engineering, Imperial College London, London, UK Department of Mate Tetronics Ltd, Swindon, UK Department of Materials, Imperial College London, London, UK
国际会议
北京
英文
579-584
2010-05-17（万方平台首次上网日期，不代表论文的发表时间）