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利用煤矸石生产人造轻骨料(陶粒)技术要点 总被引:1,自引:0,他引:1
介绍国内外研究和生产煤矸石陶粒概况,煤矸石陶粒主要生产方法,生产煤矸石陶粒技术要点,煤矸石陶粒发展空间巨大、前景美好. 相似文献
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介绍轻骨料及其混凝土在我国的发展背景、工程应用现状,分析应用中存在的主要问题及发展趋势等。轻骨料及其混凝土对可持续发展战略具有重要作用。 相似文献
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阐述了回转窑新砌衬里后必须烘烤的原因,衬里中不同性质水分的脱水温度范围。为掌控烘烤窑时的升温速度,防止衬里材料和窑体受损,推荐“回转窑烘烤升温制度”和“回转窑升温转窑制度”作为参考。文章还列举了烘窑前的准备工作和烘窑操作的注意事项。 相似文献
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《Construction and Building Materials》2010,24(1):46-55
This paper reports the result of the investigation on manufacturing lightweight aggregate by incorporating municipal solid waste (MSW) incineration fly ashes and reaction ashes with reservoir sediments. The investigation was first performed in a laboratory scale to assess the effects of the composition and the firing conditions on the properties of the resulting aggregate. Afterward, a big amount of aggregates was manufactured in a pilot scale using a commercially available rotary kiln. Physical properties of the synthetic aggregates were subsequently assessed. In addition, compressive strength of the concrete made from the manufactured aggregates was experimentally measured. The investigation shows that the analysis results for the MSW incineration fly ashes and reaction ashes are not in the limits of the expandable region of Riley’s ternary diagram due to the low content of SiO2. Therefore, they can only be used as additives. The proper content for MSW incineration ashes should not exceed 30%, except compositional adjustment using oxide constituents. The particle density of the manufactured aggregates using a commercially available rotary kiln was 0.99 g/cm3, which is significantly lower than normal density aggregate. Moreover, its dry loose bulk density is 593 kg/m3, which meets the requirements of ASTM C 330 with bulk density less than 880 kg/m3 for coarse aggregate. On the other hand, the results of toxicity test meet the Taiwan Environmental Regulatory requirements, which demonstrate that the aggregate thus fabricated is non-hazardous for construction use. 相似文献
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对轻骨料饰面清水混凝土的配合比及基本性能进行研究,同时通过在西安灞商务中心工程中的实际应用,得出了在西安地区可以大规模推广使用该种材料及技术。对一定程度下缓解国内砂石资源日益匮乏的矛盾,保护环境,具有良好的指导意义。 相似文献
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