Study on mechanical properties of composite mineral admixtures prepared from phosphorus slag
In order to improve the utilization rate of solid waste resources in Sichuan province,the cementing material properties of phosphorus slag,lithium slag,vanadium titanium slag and steel slag produced in Sichuan area were studied.The effects of four kinds of mineral admixtures on the fluidity and activity of cemen-tified materials were studied,and the methods of improving the activity of composite cementified materials were explored.The re-sults show that the addition of lithium slag can reduce the fluidity of the cementing material,while phosphorus slag,vanadium tita-nium slag and steel slag can increase the fluidity of the cemen-ting material.The 28 d compressive activity of the four mineral admixtures varies from small to large as follows:vanadium titani-um slag＜steel slag＜phosphorus slag＜lithium slag;Reducing the fineness powder of phosphorus slag and adding a small a-mount of fine clinker powder can effectively improve the activity of composite mineral admixture,and there is no obvious adverse effect on the flow performance of composite mineral admixture.
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