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首页> 外文期刊>Journal of Solid Waste Technology and Management >HIGH PERFORMANCE ALKALI ASH MA TERIAL
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HIGH PERFORMANCE ALKALI ASH MA TERIAL

机译：高性能碱灰材料

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摘要

Alkali Ash Material (AAM) concrete is a new and unique material that is cost-effective because it utilizes waste fly ash, has properties superior to other concrete products and is potentially suitable for high strength construction in bridges and highways. The AAM concrete described here is produced from the addition of inexpensive chemicals to fly ash. Fly ash is by far the largest by-product of the consumption of coal for the generation of electricity. Only 30% of the 71 million tons of fly ash generated each year are recycled for use in structural fill, waste stabilization and additives to concrete. AAM has advantages over other concrete products. AAM can be used to create high performance concrete (AAM-HPC), providing rapid strength gain and development of high ultimate strengths of more than 110 MPa. AAM has far better environmental resistance than Portland cement concrete, resisting attack from sulfuric acid (H_2SO_4), hydrochloric acid (HCl), and organic acids. AAM resists freeze-thaw attack and high abrasion, possesses low chloride permeability and does not exhibit alkali silica reactivity. AAM concrete is mixed and molded like ordinary Portland cement using conventional technology, adapted from existing facilities in manufacture of pipe, block, and wet cast concrete products. AAM hardens with dry curing, whereas Portland cement is hydrated and requires moist curing. Applications of AAM are blocks, pipes, median barriers, sound barriers, overlaying materials, and chemical resistant products. With further development, AAM will be suitable for bridge beams, concrete tanks, highway appurtenances, and other high strength construction products.
机译：碱灰材料（AAM）混凝土是一种新颖而独特的材料，具有成本效益，因为它利用粉煤灰废料，具有优于其他混凝土产品的性能，并可能适用于桥梁和公路的高强度建筑。这里描述的AAM混凝土是通过添加廉价的化学物质来粉煤灰生产的。粉煤灰是迄今为止发电用煤最大的副产品。每年产生的7100万吨粉煤灰中，只有30％被回收用于结构填充，废物稳定和混凝土添加剂。 AAM优于其他混凝土产品。 AAM可用于创建高性能混凝土（AAM-HPC），提供快速的强度增加并产生超过110 MPa的高极限强度。 AAM具有比波特兰水泥混凝土更好的耐环境性，能够抵抗硫酸（H_2SO_4），盐酸（HCl）和有机酸的侵蚀。 AAM耐冻融侵蚀和高磨损，具有较低的氯化物渗透性，并且不表现出碱性二氧化硅反应性。 AAM混凝土使用常规技术像普通波特兰水泥一样进行混合和模制，并适应于制造管道，砌块和湿浇铸混凝土产品的现有设施。 AAM通过干固化而硬化，而波特兰水泥则是水合的，需要湿固化。 AAM的应用包括砌块，管道，中间屏障，声屏障，覆盖材料和耐化学药品。随着进一步的发展，AAM将适用于桥梁，混凝土储罐，公路附件以及其他高强度建筑产品。

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