建筑垃圾再生混合骨料混凝土的受力性能研究讲诉.doc

摘要 我国城市化和工业化的快速发展，使建筑资源的需求快速增长。同时随着人们生活水平的提高和对城市市政设施的需求，以及城市早期规划的不科学性，使 得拆迁改造不断发生，建筑垃圾大量产生。形成的大量建筑垃圾不仅占用土地， 而且污染环境。这种建筑资源大量消耗和建筑垃圾不断产生的状态对经济、社会 发展形成了巨大的影响。发展循环利用技术成为迫在眉睫的问题。如能将建筑垃 圾加以处理后代替砂石资源用于混凝土生产将对经济、社会发展产生极大的促进 作用。 本文在综合整理大量国内外文献资料的基础上，并通过大量试验研究和分析，主要工作如下:以由杭州地区建筑垃圾破碎而来的再生混合骨料为试验原材料，在大量试验及理论分析的基础上，对再生混合骨料及其混凝土制品的性能进行了初步研究:再生混合骨料自身吸水率高，强度较低，由此制成的再生混合骨料混凝土强度为25Mpa左右，基本满足一般道路路面砖使用，且强度到达路面砖一等品的力学性能要求，其强度受水胶比影响最大，当再生粗骨料的替代率在50%左右，用水量为300kg时，再生混合骨料混凝土的强度较高。 关键词:建筑垃圾;再生混合骨料;正交试验 Abstract With the rapid development of Chinas Urbanization and industrialization, the demand for construction resources grows rapidly. Meanwhile, a large number of construction waste generated with the improvement of living standards, the needs of urban infrastructure and unscientific urban planning early. The construction waste is not only occupying land, but also pollutes the environment. The state of such construction resources consumed largely and construction waste generated constantly greatly impact the economic and social development. Therefore, the development of recycling technology is becoming an imminent issue. If the construction waste can be processed and replace the gravel resources which used in concrete production, the economic and social development will promote greatly. In this paper, we consolidate a large number of documents home and abroad. On the basis of a large number of research and analysis, the main work is as follows:Take the mixed recycled aggregate which brought by broken construction waste in hangzhou area as raw materials for the experiments, on the basis of a large number of experiments and theoretical analysis, taking a preliminary study of recycle sources of aggregate and concrete products performance: the mixed recycled aggregate has high water absorption itself and low intensity, the recycled mixed aggregate concrete which made by it has a strength about 25Mpa, basically meet the general use as pavior bricks, and its strength reached the