铁尾矿用作建筑材料的关键技术研究
发布时间：2018-10-09 19:16
【摘要】：随着国民经济的快速发展,房建、公路与市政工程建设快速发展,也极大地促进了钢铁工业的发展,铁尾矿是铁矿场在开采分选矿石之后排放的固体废弃物,近年来铁尾矿的大量排放,其堆积不仅占用土地、污染环境,还会带来安全隐患。而公路工程及房屋建筑的建设需要大量的建筑材料,若能采用适当的工程技术,将铁尾矿用作建筑材料,即可以降低公路工程造价,也有利于环境保护。本文本通过系统的实验研究,确定适当的工程技术,改善铁尾矿的技术性能,特别是应用较少的矿山尾矿(铁尾矿碎石)的技术性能,使铁尾矿碎石满足作为混凝土、道路基层等建筑材料的性能需求,以期大量利用铁尾矿碎石,变废为宝,减少自然资源的消耗,同时降低工程造价。试验结果表明,无机结合料稳定铁尾矿碎石混合料的强度较高、水稳定性好,其技术性能满足现行规范对道路建筑材料的性能需求,可以用作路面基层或底基层材料。铁尾矿碎石可以作为混凝土的粗骨料,制备混凝土材料。本文的研究成果将为建设事业的快速发展,寻求开源节流的战略思想,解决能源、环境保护问题,具有重要的经济效益和社会效益。
[Abstract]:With the rapid development of the national economy and the rapid development of housing construction, highway and municipal engineering construction, the development of iron and steel industry has also been greatly promoted. Iron tailings are solid wastes discharged from iron ore field after mining and sorting ore. In recent years, a large amount of iron tailings discharge, which not only occupy the land, pollute the environment, but also bring safety risks. The construction of highway engineering and building needs a large amount of building materials. If appropriate engineering technology can be used to use iron tailings as building materials, it can reduce the cost of highway engineering and also be beneficial to environmental protection. In this paper, through systematic experimental study, the appropriate engineering technology is determined to improve the technical performance of iron tailings, especially the technical performance of mine tailings (macadam) which is seldom used, so that the macadam of iron tailings can be used as concrete. The performance demand of building materials such as road base is expected to make a great use of the macadam of iron tailings to turn waste into treasure, to reduce the consumption of natural resources and to reduce the cost of engineering at the same time. The test results show that the inorganic binder stabilizes the iron tailings macadam mixture with high strength and good water stability, and its technical performance can meet the requirements of the current code for the performance of road building materials, and can be used as the pavement base or the bottom base material. Iron tailings gravel can be used as coarse aggregate of concrete to prepare concrete material. The research results of this paper will be for the rapid development of construction, seek the strategic thought of opening up sources of income and cutting down expenditure, solve the problems of energy and environmental protection, and have important economic and social benefits.
【学位授予单位】：河北工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U414
，
本文编号：2260475
[Abstract]:With the rapid development of the national economy and the rapid development of housing construction, highway and municipal engineering construction, the development of iron and steel industry has also been greatly promoted. Iron tailings are solid wastes discharged from iron ore field after mining and sorting ore. In recent years, a large amount of iron tailings discharge, which not only occupy the land, pollute the environment, but also bring safety risks. The construction of highway engineering and building needs a large amount of building materials. If appropriate engineering technology can be used to use iron tailings as building materials, it can reduce the cost of highway engineering and also be beneficial to environmental protection. In this paper, through systematic experimental study, the appropriate engineering technology is determined to improve the technical performance of iron tailings, especially the technical performance of mine tailings (macadam) which is seldom used, so that the macadam of iron tailings can be used as concrete. The performance demand of building materials such as road base is expected to make a great use of the macadam of iron tailings to turn waste into treasure, to reduce the consumption of natural resources and to reduce the cost of engineering at the same time. The test results show that the inorganic binder stabilizes the iron tailings macadam mixture with high strength and good water stability, and its technical performance can meet the requirements of the current code for the performance of road building materials, and can be used as the pavement base or the bottom base material. Iron tailings gravel can be used as coarse aggregate of concrete to prepare concrete material. The research results of this paper will be for the rapid development of construction, seek the strategic thought of opening up sources of income and cutting down expenditure, solve the problems of energy and environmental protection, and have important economic and social benefits.
【学位授予单位】：河北工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U414
，
本文编号：2260475
本文链接：https://www.wllwen.com/kejilunwen/daoluqiaoliang/2260475.html
