| China is one of the largest producers and consumers of ceramic tiles in the world.With the rapid social and economic development and the increase in ceramics production, the number of scrap is increasing.The ceramic industrial solid waste post-processing status in China is far from ideal.Ceramic industrial waste treatment and utilization is relatively low, and the ceramic fragments weathered difficult for years.The ecological environment is causing serious harm with the increase of the amount of concrete, aggregate consumption is very impressive, but mainly for concrete aggregate is natural, caused by excessive exploitation of natural aggregate damage to vegetation, landslides, soil erosion or river diversions and a series of environmental problems and natural aggregate resources are limited, at present China has emerged a serious crisis of concrete aggregate resources. Therefore, the aggregate for the concrete to seek new resources is around the corner, using ceramics producing after firing waste processing alternative to natural aggregate is a very interesting topic.In this paper, the scrap is from Yang Xin Kai Ceramics Co., which is the second firing of waste tiles adobe. The scraps were non-glazed ceramics then were crushed and screened.The broken ceramic were re-leveled to the requirements of sand II area and5-20mm graded crushed stone, and test the class with a good coarse and fine aggregate apparent density, water absorption, bulk density, compact density and porosity, crushing value performance indicators, and with natural aggregate comparing to the performance we found little difference.In this thesis, thirteen specimens are designed including the natural aggregate concreteand and abandoned four ceramic replacing coarse aggregate (coarse aggregate replacement were30%,50%,70%,100%); waste fine aggregate four ceramic replacement (alternative fine aggregate, respectively,30%,50%,70%,100%); abandoned ceramics while replacement of coarse aggregate and fine aggregate four (and replacement of coarse aggregate, fine aggregate30%,50%,70%,100%); the concrete shrinkage test, freezing test and micro test.It was found that shrinkage by the contraction of concrete is fast in the early, then slow, but it is still growing; Waste ceramic aggregate concrete with natural aggregate shrinkage is similar, in most cases it can improve concrete’s resistance to shrinkage.With the amount of discarded pottery increase aggregate substitute, shrinkage of concrete is reduced; Waste ceramic combined with coarse and fine aggregate improve the performance of concrete is beeter than waste fine aggregate in the shrinkage. The ceramic waste coarse aggregate is better than fine aggregate. It was found abandoned by frost ceramic aggregate concrete with natural aggregate concrete frost resistance is nearly the same in the highest number of freeze-thaw cycles. Although the ceramic aggregate concrete alternative to natural aggregate abandoned the mass loss rate is higher than the natural aggregate concrete, the aggregate concrete and ceramic waste aggregate concrete in the termination of the test mass loss rate do not reach5%. The ceramic waste aggregate substitute natural aggregate has little effect on the frost resistance of concrete.Through the microscope, it can be found that the occlusion of abandoned ceramics and cement and that of the natural stone and cement are nearly the same.These tests for the aggregate performance of ceramic waste aggregate in concrete provide a reliable basis for the application; it shows that ceramic waste aggregate concrete shrinkage, frost resistance and the aggregate occlusion is not worse than natural aggregate, and providing a way to the utilization of ceramic waste. |
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