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生态混凝土水分保持与供水措施研究【作者】李庆刚 【导师】陆采荣; 梅国兴

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【作者】李庆刚导师陆采荣; 梅国兴水利论文-JS8t`a.CX
【作者基本信息】南京水利科学研究院,材料学,2007年,硕士

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【中文摘要】 本文紧密结合水利部“948”计划技术创新与转化项目“岩石陡坡生态保护系统工程技术研究”,围绕生态混凝土的保水性进行了研究。随着环境保护、保持生态多样性以及维护社会可持续发展的呼声日益高涨,生态混凝土作为一种植生型多孔混凝土被日益重视。它是一种具有连续空隙结构的混凝土,有着良好的透水性与透气性,并且植物能在其表面上直接生长。通过测定生态混凝土透水系数,达到每秒厘米数量级,透水性远好于一般土壤。矿物外掺料的引入降低了生态混凝土内部空隙的pH值,其中硅粉的效果最为明显,使内部空隙中的pH值降低到10以下,满足护坡用植生型多孔混凝土的要求。本文首次对生态混凝土的保水性进行了研究。通过对SAP高吸水树脂、聚丙烯酰胺和甲基纤维素三种保水剂、锯末、醋糟、棕榈对生态混凝土吸水、保水、失水性能的测试,分析得出三种保水剂对生态混凝土的影响关系以及阐述了空隙率、保水剂、添加剂以及骨料种类对生态混凝土保水和失水的影响;最后对保水剂进行了优选,并对保水机理进行了探索性研究。对生态混凝土的供水措施进行了初步研究,其供水措施大体可以分为三种:地面供水、地上供水和地下供水。生态混凝土与植物相容性的试验表明,在不同厚度...更多混凝土的生长条件下、不同植物在相同混凝土板中、不同植物在生态混凝土试块中三种生长条件下,植物后期的生长情况基本相同,而且植物在生态混凝土上长势良好,它们的根系已经穿过混凝土的连通空隙。混凝土上的草丛中有蜗牛等动物,说明生态混凝土能够与大自然和谐相处。  还原水利论文I ba9KqH f

uj$T5C n3aRh\m0【英文摘要】 This research programe is a part of the Ministry of Water Resources'948 Plan, namely innovation and transformation projects,study on water retention agent of eco-concrete.With the great demand in materials with the benefits to environment conservation, ecological variousness and continuable ,ecological concrete is regarded as one kind of the environmental-friendly ecological concrete increasingly. Ecological concrete contains a partical system of continuous porous structure. And the continuous porous structure provides the possibility of excellent permeability and ventilation of concrete. Therefore green plants are able to grow directly on the surface of the ecological concrete.The permeability of ecological concrete is even better ordinary soil with comparing both permeability coefficients by apparatus made in our lab. It's drawn form the experimental research that mineral addition replacing cement reduces pH value in concrete. For instance, with the addition of silicon fume, the pH v...更多alue of ecological concrete reduces to 10 below. The investigation achievement e fulfills the criteria of ecological concrete.The performance of holding water of ecological concrete is researched for the first time. Through the test of water absorbing, water holding and water releasing performances of all water retention agents, sawdust, vinegar stillage and cabbage palm, this paper points out the affect on ecological concrete of different water retention agent and also conclude the affect on ecological concrete holding water or water releasing of spacing ratios, water retention agents, materials addition and different stones.The water-supply measures of ecological concrete are pilot study. The water-supply measures consist of ground water-supply, upground water-supply and underground water-supply.The ecological concrete and the compatibility of the plants indicated that the growth of the plant is sameness on different thickness concrete condition or different plants in the same concrete board and different plants in concrete cube. Further more, the plants grow well in the ecological concrete. Its root has drilled through the continuous pores of the concrete. The snails have been found in the brushwood planted in the concrete. It indicates that the ecological concrete can be in harmony with the nature.  还原

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【中文关键词】 生态混凝土; 透水系数; pH值; 保水剂; 吸水性; 保水性; 失水性植生试验; 供水措施水利论文_3U!X%la2fn.@G
【英文关键词】 eco-concrete; permeability coefficient; pH value; water retention agent; waterabsorbing performance; water holding performance; water releasing performance; plant test; water-supply measures水利论文H%@,hqP+n-M

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