钢渣沥青玛蹄脂混合料制备与性能研究-材料学专业论文.docxVIP

AbstractIn Abstract In China,and in a majority of industrial countries，the use of steel slag as a kind of raw material for civil ellgineering，for metallurgical use，in waste water treatment and as cement clinker aggregate，has a very long history．Steel slag is a sort of byproduct during steel making process．W／th the development of steel industry,the amount of steel slag increases sharply．The quantities of the steel slag engross a mass of ground and increasingly become an environmental problem．Since the introduction and beginning of using the basic oxygen steel making furnace(BOF)，Chinese researchers have commenced a great deal of researches on the development of application fields of BOF steel slag for many years．Lots of new applications and properties have been found，but few of them in asphalt mixture of road construction engineering．Now,in China,it has appeared very inspiring situation that highway construction projects progress rapidly and extensively．Rapid development in the field of road construction brings inevitable problem that there is a great demand for aggregate，especially excellent aggregate for highway asphalt pavement．The last statement holds us responsible to save natural resources by using industrial byproducts and to increase their utilization rate wherever their technical properties ale suitable concerning the relevant application field．Basically，these applications could be only achieved because of high quality of steel slag by strict selection of laW materials and a feasible process route． This paper discussed the feasibility of BOF steel slag used as aggregate in asphalt pavement by two points of view including BOF steel slag’s physical and micro properties as well as steel slag asphalt mixtures’materials and pavement performances． For the former part，this paper mainly concerned the mechanocbemjstry and physical changes of the steel slag and studied it by performing XRD、SEM、FI—IR、DSC—TG and Mercury Porosimeter analysis and testing met