摘要
为了拓展沥青废料的高附加值再利用,采用有机泡沫浸渍法制备沥青废料基泡沫陶瓷,利用X射线衍射分析、傅立叶变换红外光谱、热重-差式扫描量热分析、扫描电子显微分析等手段研究原料组成、性质、烧成工艺参数和样品性能.结果表明:沥青废料主要由二氧化硅,钠、钙、铝、硅元素组成的复杂氧化物,碳酸钙以及沥青残留有机物组成,在温度区间200～800 ℃存在有机物的两步分解;烧结温度1 100 ℃保温90 min烧成泡沫陶瓷的孔隙率为65％,且表面存在Na0.45Ca0.55Al1.55Si2.45O8复杂氧化物和大量球形二氧化硅,抗压强度为1.01 MPa.
Abstract
To expand the high value-added reuse of asphalt waste,asphalt waste-based foam ceramics was prepared by organic foam impregnation method.The raw material composition,properties,sintering parameters and sample properties were studied by X-ray diffraction analysis,Fourier transform infrared spectroscopy,thermogravimetric analysis,scanning electron microanalysis and other means.The results show that the asphalt waste is mainly composed of silica,complex oxides of sodium,calcium,aluminum and silicon,calcium carbonate and asphalt residual organic matter.There is a two-step decomposition of organic matter in the temperature range of 200～800 ℃.The porosity of foam ceramics sintered at 1 100 ℃ for 90 min is 65％,and there are Na0.45Ca0.55Al1.55Si2.45O8 complex oxides and a large number of spherical silicas on the surface,which make its compressive strength reach 1.01 MPa.
基金项目
山东省自然科学基金项目(ZR2019MEM055)
维普
万方数据