Abstract

As the dairyfarming and stock-raising farms in Hokkaido is becoming large-scale, a severe problem has appeared with a large amount of sewage mudding the paddock and polluting the water. In order to clean the paddock and treat the sewage addequately, new paving material suitable for paddocks is required . On the other side , the lime cake wasted from sugar-plant is forced to be utnized by environmental reasons. In this study , a new paving material we have developed using lime cake is discussed.