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Information Journal Paper

Title

INFLUENCE OF BASIC OXYGEN SLAG (BOS) ON STRENGTH AND VOLUMETRIC STABILITY CHARACTERISTICS OF LIME STABILIZED KAOLINITE

Writers

ABDI M.R. | BOHLOOLI N.

Pages

 Start Page 39 | End Page 50

Abstract

 Rapid development and industrialization has produced large quantities of waste. Much of this waste does not have any effective use and its disposal has become more difficult and expensive because of the increasingly strin- gent environmental regulations and the shortage of suit- able nearby disposal sites. It has been observed that some of this waste has high potential and can be gain- fully utilized in other industries. To use industrial waste will not only help in solving environmental pollution problems associated with its disposal but also help in the conservation of natural resources.Blast furnace slag and steel making slag is produced dur- ing the iron and steel making process. These materials are widely utilized in construction industries all over the world. Use of these by-products depends on their chem- ical composition and physical properties. Despite some industrial uses of blast furnace slag in Iran it is still considered a by-product requiring storage. In this arti- cle the effect of BASIC OXYGEN SLAG (BOS) on the SWELLING and shrinkage characteristics of clay soil has been inves- tigated. Kaolinite samples have been treated with 1 3 and 5% LIME and 10 15 and 20% BOS slag. Samples have been cured at35o C for periods of 1 7 28 and 90 days after which they were subjected to SWELLING unconfined compressive STRENGTH and liquid limit plastic limit and shrinkage limit tests. Results showed that the concur- rent addition of LIME and BOS slag to kaolinite com- pared to LIME treated kaolinite samples significantly re- duces their SWELLING potential. The unconfined compres- sive STRENGTH of LIME/BOS slag treated kaolinite samples also showed a significant increase when compared to LIME only treated samples. The amount of SWELLING reduction or the increase in unconfined compressive STRENGTH was found to be a function of the percentage of LIME and BOS slag addition as well as the curing period.

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