西昌高钛重矿渣混凝土骨料性能试验研究

Experimental Research on Concrete Aggregate Performance of High Titanium Heavy Slag in Xichang

西昌钒钛资源综合利用项目生产形成的巨量高钛重矿渣,造成了严重的资源利用、环保污染和土地浪费的问题。结合相关规范,对高钛重矿渣加工形成的渣砂和渣石作为混凝土骨料的可行性进行试验研究。研究表明渣砂和渣石为组成成分稳定、无放射性、不具有碱硅酸活性的硅质骨料,骨料的级配、坚固性、堆积密度、压碎值、含泥量、针片状颗粒含量、有害物质含量等物理性能优良。加工形成的渣砂和渣石符合混凝土用骨料的成分组成、物理性能和结构耐久性能要求,可以作为混凝土骨料使用。

It caused serious problems of resource utilization, environmental pollution and land waste by the enormous amount of high titanium heavy slag,which came from Xichang Vanadium and Titanium Resources Comprehensive Utilization Project.In accordance with relevant standards, experimental study was carried out to verify the feasibility of manufactured slag sand and slag stone replacing of concrete aggregate.Research shows that slag sand and slag stone is siliceous aggregate of stable composition, non-radioactivity and non-alkali silicate reactivity,which has fine physical properties of gradation,soundness, bulk density, crushing value, content of dust ＆ elonged flaky particle ＆ harmful substances.The manufactured slag sand and slag stone can meet the compulsory rules chemical composition, physical property and structural durability performance of concrete aggregate,which can be used for concrete aggregate.