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Mechanical Characteristics of Inorganic Binder Stabilized Iron Tailings

As the largest solid waste in China, iron tailings have brought a huge impact and potential safety hazard to resources, environment and land. In this paper, using the stress-strain controlled soil mechanics tri-axial apparatus, the author researched the mechanics performance of the cement stabilized iron tailings in the laboratory. The result shows: Along with the increase of the cement dosage, stabilized material strength has improved significantly; Under the confining pressure from 300kPa to 500kPa, the increase of confining pressure is proportional to the strength of stabilized material. Moreover, lower cement content (3%-5%) of stabilized material, its stress-strain curve is similar to those of clayey soil, it has clear plastic yield characteristics; on the contrary, higher dosage of cement stabilized material (7%-9%), the plastic reduced and strength increased. Keywords: cement stabilized iron tailings; cement dosage; stress-strain curve; strength; confining pressure