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DURABILITY BEHAVIOR OF PORTLAND BURNT OIL SHALE CEMENT CONCRETE

机译:波特兰燃烧油页岩水泥混凝土的耐久性能

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Combustion temperature of oil shale in pulverized fuel boilers and in fluidized bed combustion equipment is different. High temperature burnt oil shale from pulverized combustion boilers and low temperature burnt oil shale from a CFB (Circulating Fluidized Bed) boiler differ in their mineral composition and surface properties of ash particles. Variations in the properties of ashes affect hydraulic properties of burnt oil shale as a binder or as the main constituent of Portland cement. Differences in the frost resistance of concretes made with various second main constituents show how significant is the type of hydration of the second main constituent in terms of the durability. Alternate immersion-drying tests were carried out to analyze the frost resistance of concretes compared to the other main constituents. The objective of this work was to investigate the influence of various burnt oil shales as the main constituent of Portland cement on the durability of concrete compared to the main constituent such as pulverized limestone.
机译:煤粉锅炉和流化床燃烧设备中油页岩的燃烧温度不同。粉末燃烧锅炉的高温烧制油页岩和CFB(循环流化床)锅炉的低温烧制油页岩的矿物成分和灰分颗粒的表面特性有所不同。灰分性质的变化影响着作为粘合剂或波特兰水泥主要成分的烧过的油页岩的水硬性。用各种第二主要成分制成的混凝土的抗冻性差异表明,就耐用性而言,第二主要成分的水合类型有多重要。进行了替代性的浸没-干燥测试,以分析混凝土与其他主要成分的抗冻性。这项工作的目的是研究与粉煤灰等主要成分相比,作为波特兰水泥主要成分的各种燃烧油页岩对混凝土耐久性的影响。

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