The Layer Face Treatment of Roller Compacted Concrete Dam
Feng Lisheng; Yang Yuyi(Wuhan University of Hydraulic and Electric Engineering)
The layer surface treatment of RCCD is closely related to the construction quality and work schedule. Three comparative treatments by means of simulation investigation in the laboratory were suggested and alternative B for which cement mortar is applied to the chiselled surface is preferable. Alternative c for applyingcement sand mortar on the surface is also practical for the purpose of reducing cement consumption. Howeverthe exposure time of layers should be as short as possible for any alternative in order to prevent the whiteningand drying of mortar which will lead to the worsening of layers.