钢渣路面基层材料组成与性能研究-建筑材料与工程专业论文.docxVIP

武汉理工大学硕士学位论文 Abstract The steel slag’S physical performance is similar to natural stone，it is a kind of fine road aggregate．It includes hydraulic minerals such as C2S、C3S．The production of steel slag in our country is large but its utilization ratio is low．The steel slag poHutcs the envirenment a lot．At the same time，a lot of road constructions ale short of aggregate in our country．It is very significant that if we use steel slag as the aggregate in the road base． In this article,Wuhan Steel Corporation llatal．al cooling steel slag is studied as the msearch object,the stabilization of steel slag and the road base material with steel slag as aggregate is studied．The fly ash-steel slag(FA-SS for short)，fly ash- phosphogypsum-steel slag(FA-PG-SS for short)，cement-fly ash steel slag(C-FA-SS for short)，fly ash-steel slag-aggregate(FA-SS-A for short)，lime-fly ash-steel slag-aggregate(L-FA-SS·A)，cement-fly ash—steel slag-aggregate(C-FA—SS-A for short)is prepared,the steel slag act as hydration activity binder and the fly ash act as pozzolana component and phosphogypsum act as slllfate excitant．The matrix ofthese new road materials is studied,and hydrated mechanism and the intensity forming mechanism of the inorganic binder stabilized steel slag is studied,at last,the ogonomic appraisal to these kinds ofmaterials is also carried out in this article． It Was showed that after Wuhan Steel Corporations steel slag has aged for a year, its stabilization suits the requirement of the road base materials．It can remarkably improve the stabilization ofthe steel slag road base material when put the fly ash in the road base mixture．The effect is good when using cement、lime and fly ash stabilize the steel slag．The strength porformance of FA·SS is similar to Lime-fly ash-stccl slag，it can meet the highest strength when the ratio ofsteel slag to fly ash is around l：1 to 2：l：As the activation ofphosphogypsum to the pozzolana reaction,it can remarkably improve the early strength when put ph