Abstract
The oil crisis has prompted renewed interest in direct burning of oil shale as an alternative energy source. A major problem in this process is the large portion of ash produced. The cementing properties of this ash were investigated to determine its applicability as a building material. In this paper, the effects of burning temperature and method of burning (rotary kiln and fluidized bed) on the strength of ash compacts were studied. All the ash samples gained considerable strength, indicating reasonable cementing properties. A maximum strength was obtained with ash samples produced at 700 to 900°C. In this range, strength values at 28 days of 260 and 450 kg/cm 2 in moist and autoclave curing, respectively, were obtained.
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