August 2011
Utilization of demolished concrete, grog, hydrated lime and cement kiln dust in building materials
It is desirable to completely recycle concrete waste in order to protect natural resources and reduce environment pollution. In this paper, the studied reference mix composed of demolished waste concrete/grog/hydrated lime in the ratio of (40/50/10, wt. %), while other mixes has cement kiln dust as a partial replacement of hydrated lime in the ratio from zero up to complete replacement. Both grog and...
August 2011
Reliability assessment of WRPC gas turbine power station
The reliability indices of the turbines were analyzed based on a six-year failure database. Such reliability indices as failure rate (), repair rate () and mean time to repair () have been estimated. The analyses showed that gas turbine 1 (GT1) has maximum failure rate () of once in 100 h in 2007 with system availability () of 0.333 and minimum failure rate () of once in 1000 h in 2005 with of 0.983....
August 2011
Acceleration motion of geometric and spherical particles in two dimensions and implications in design of continuous sedimentation rectangular tanks
The design procedure outlined by Camp (1946) for design of continuous gravity sedimentation tank was revisited. The viscous effects of flowing fluid were included in the model by development of the velocity profile of the fluid in the horizontal direction. The transient motion of the spherical and geometric particles unhindered prior to reaching terminal settling velocity, was simulated using a desktop...
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