尾矿粉掺入水泥稳定铁矿废石混合料施工最佳配合比试验研究  

Experimental Study on the Optimal Mix Ratio of Tailing Powder Incorporated into Cement Stabilized Iron-ore Waste Rock Mixture for Construction

作　　者：刘峰 田继龙 钱浩阳 董鑫宇 LIU Feng;TIAN Jilong;QIAN Haoyang;DONG Xinyu(School of Resources and Civil Engineering,Liaoning Institute of Science and Technology,Benxi Liaoning 117004,China)

机构地区：[1]辽宁科技学院资源与土木工程学院,辽宁本溪117004

出　　处：《辽宁科技学院学报》2024年第1期1-5,共5页Journal of Liaoning Institute of Science and Technology

基　　金：2023年辽宁省教育厅基本科研项目“工业固废铁矿废石——铁尾矿作为路面基层材料在本溪地区研究与应用”(JYTMS20231795);2022年度辽宁科技学院教育教学研究课题“基于高质量发展的辽宁省应用型高校创新创业教育增值性评价研究”(LKJY202202);校博士启动基金“工业固废铁尾矿资源在土木工程中应用的关键技术研究”(2307B24).

摘　　要：为了研究尾矿粉掺加水泥稳定铁矿废石混合料施工最佳配合比的影响,对不同掺量尾矿粉(0%、5%、10%、15%、20%)及不同种类和剂量外加剂的水泥稳定铁矿废石混合料进行无侧限抗压强度、水稳性、抗冻性、疲劳性能试验,试验结果表明,随着尾矿粉掺量增加水泥稳定铁矿废石混合料无侧限抗压强度、水稳定系数、抗冻系数呈现先增加后降低变化趋势,当尾矿粉掺量达到14.5%时,混合料无侧限抗压强度、水稳定系数、抗冻系数达到峰值;当尾矿粉掺量为6.3%时,混合料疲劳性能达到最佳;尾矿粉掺入水泥稳定铁矿废石混合料剂量为15%时,可以广泛应用于道路基层中。s:In order to study the optimal mix ratio of tailing powder incorporated into cement stabilized iron-ore waste rock mixture for construction,effects of different amounts of tailing powder(0%,5%,10%,15%,20%)and different types and dosages of additives for cement stabilized iron-ore waste rock mixture were investigated by testing the unconfined compressive strength,water stability,freezing resistance,fatigue performance.The results showed that with the increase in the amount of tailing powder,the unconfined compressive strength,water stability,freezing resistance,fatigue performance are increased and then decreased.When the amount reaches 14.5%,the unconfined compressive strength,water stability,freezing resistance reach the maximum.When the amount is 6.3%,the fatigue performance reaches its optimum.In summary,iron-ore waste rock mixture with 15%tailing powder can be widely used in the construction of roadbase.

关 键 词：铁尾矿 水泥稳定碎石混合料 路用性能 疲劳性能 

分 类 号：U414[交通运输工程—道路与铁道工程]