CHEMICAL SHRINKAGE OF PASTE CONTAINING FLUE GAS DESULPHURISATION (FGD) WASTE
The effect of including flue gas desulphurisation (FGD) waste on total chemical shrinkage of cement paste up to 7 days is reported. The FGD wastes were obtained from different plants located in different countries which vary in compositions. Also simulated FGD wastes were prepared in the laboratory which is a blend of fly ash and gypsum. Pastes were prepared with water to binder ratio of 0.5. The binder consists of cement and FGD. Cement was replaced with 25％ (by weight) of different FGD materials. The results reported show varying trend depending upon chemical composition. Using calcium sulphate based FGD waste in cement paste, both the short and long- term total chemical shrinkage were reduced. For paste containing SiO<,2>-Al<,2>O<,3>-CaSO<,4> based waste the total chemical shrinkage was reduced. The chemical shrinkage values of pastes with simulated FGD waste were comparable to actual FGD waste with similar SO<,3> content.
Chemical shrinkage desulphurised waste FGD waste total chemical shrinkage
L. Wright J. M. Khatib P. S. Mangat
Pick Everard, Halford House, Leicester, UK School of Engineering and the Built Environment, University of Wolverhampton, Wulfruna Street, Wolve Centre for Infrastructure Management, MERI, Sheffield Hallam University, Sheffield, UK
国际会议
上海
英文
1368-1377
2007-11-28（万方平台首次上网日期，不代表论文的发表时间）