The effect of modified ceramic powder and ceramic polishing powder on the properties of concrete
The mechanical modification of ceramic powder was compared with a variety of ceramic polishing powders,and the influence of different modified ceramic powder and ceramic polishing powder on the performance of concrete is analyzed.The results show that ceramic powder has larger specific surface area and increased surface activity than cement under the action of mechanical ball milling,which can give full play to the morphology effect and micro-aggregate effect of the admixture.When the ball milling time reaches 120min,the activity index of ceramic powder reaches 84％,which is better than that of ordinary fly ash.When the content of modified ceramic powder reaches 20％,the influence on the strength of concrete is small,so the content of modified ceramic powder in concrete should be controlled within 20％.In addition,the calcined ceramic polishing powder,which is mainly composed of silica,does not need modification and can be directly used in concrete to improve its mechanical properties.
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