بهسازي خاك هاي مناطق مختلف اصفهان با استفاده از سرباره هاي فولاد و استفاده تركيبي از سرباره و نانومواد

Improvement of soils from different regions of Isfahan by using steel slags an‎d using a combination of slag an‎d nano materials

زمين شناسي

Nowadays, soil improvement is an important part of geotechnical projects. Among the soil improvement methods, different additives such as cement, lime, nanomaterials, industrial waste, etc can be pointed out. In the current research, it has been tried to use nanomaterials, steel slag an‎d their combination to improve 4 soil samples of Isfahan city (S1, S2, S3 an‎d S4). In fact, in this research, the engineering properties of soils were determined at first by conducting tests on grain size distribution, the specific gravity of solid particles, Atterberg limits, stan‎dard compaction, California bearing ratio, uniaxial compressive strength an‎d direct shear. Then in order to improve the soils in the first part, nanomaterials (nanoalumina, nanomagnesia, nanosilica an‎d nanoclay) were independently added to the studied soils at an optimum of 1%. In the second part, steel slag in different percentages (5, 10 an‎d 15%) was added independently to the studied soils , an‎d in the third part, nanomaterials were added together with steel slag in their optimal percentage to the studied soils. In general, in each section, the impact of additives on improving the technical characteristics of soils was measured by performing tests on the Atterberg limit, uniaxial compressive strength an‎d direct shear. The results of the experiments show that the optimal amount of steel slag in improving the soil of Isfahan city is 5% by weight. Finally, by comparing the effect of additives (nanomaterials, steel slag an‎d combined state) on compressive strength an‎d modulus of elasticity of the studied soils, it was found that improvement with steel slag has a more favorable effect from a technical, economic an‎d environmental point of view, an‎d steel slag can be a good substitute for nanomaterials.

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