THE RESISTANCE TO SODIUM SULPHATE OF MORTARS MODIFIED WITH FLUE GAS DESULPHURISATION (FGD) WASTE
This work is part of a wide ranging research project on the optimum use of waste from the dry and semi dry flue gas desulphurisation (FGD) processes in concrete. It reports the resistance of mortars containing a typical simulated desulphurised waste (SDW) to sodium sulphate solution. The binder consists of cement and SDW. The cement was partially replaced with 0％~70％ (by mass). The mortar consists of 1 part binder to 3 parts sand and the water to binder ratio was 0.55. Samples were exposed to 2.2％ sodium sulphate solution. The results showed that replacing cement with increasing levels of SDW improved sulphate resistance when exposed to sodium sulphate. This was attributed to the dilution of C <,3>A and CH due to the reduction in cement, pore refinement, and the formation of ettringite during early periods of hydration.
Desulphurised waste FGD waste strength sulphate resistance
J. M. Khatib L. Wright P. S. Mangat
School of Engineering and the Built Environment, University of Wolverhampton, Wolverhampton, UK Pick Everard, Halford House, Leicester, UK Centre for Infrastructure Management, MERI, Sheffield Hallam University, Sheffield, UK
国际会议
上海
英文
1344-1351
2007-11-28（万方平台首次上网日期，不代表论文的发表时间）