Research On The Experiments About The Pavement Performance Of Cement-Fly Ash Stabilized Steel Slag

As the iron and steel production technologies have been greatly improved, but also led to a large number of abandoned slag heap, not only pollute the environment, they take up a lot of land. Of this, many countries have begun to focus on seeking to exploit a large amount of slag simple and feasible use of technology.In this paper, laboratory testing and stability studies of thin steel slag cement, fly ash road performance. Experimental study of the mixture of unconfined compressive strength, split tensile strength, the shrinkage performance tests and pore structure studies and steel slag and non-doped hybrid materials to compare the performance obtained The following main conclusions:Through laboratory testing study found the following main conclusions as follows:(1) With the less fine 4.75mm steel slag aggregate can be prepared as a road performance into a good road base material;(2) The fine slag cement-fly ash stabilized unconfined compressive strength, split tensile strength is the growth with increasing age. However,80% of the doped mixture mechanical properties of the latter part of the value fell below 70% of the doped slag mixture;(3) By analyzing the mixture of the drying shrinkage strain, with an average shrinkage factor, the average water loss rate of shrinkage characteristics of indicators show that hybrid materials doped with fine steel slag not only by the shrinkage of the nature of the impact of slag ash, cement, also subject to doping amount of impact;(4) Doped slag mixture of unconfined compressive strength, split tensile strength, and shrinkage properties of steel slag to be better than the non-doped hybrid materials;(5) Mercury test results showed that:In the phase when the same age period, with the increase in dosage of cement hydration products to increase, reducing the total porosity and the pore diameter centered, thereby enhancing the strength.