Hong Duc University Journal of Science, S. 3 (2017)

Cỡ chữ:  Nhỏ  Vừa  Lớn

A RESEARCH FOR USING BAZAN SOIL AS FILLING MATERIALS OF HOMOGENEOUS EARTH DAMS IN TAY NGUYEN AREA

Mai Thi Hong

Tóm tắt


Using local soil as filling material for homogeneous earth dams could reduce remarkably construction cost. However, the Bazan soil in Tay Nguyen area has strong absorbability and quick disintegration with water. Those properties bring about the difficulty for construction process and could be the reason for the high number of the earth dam accidents in this area in the country. The paper investigates the physical characteristics and mechanical behaviors of Bazan soil. Based on that, proposes the approach for quality improvement and design criterion when using Bazan soil for homogeneous earth dams. The result of experiments reveals that Bazan soil has low dry density and high optimum moisture content, which is the cause of difficulty in the construction phase. Whereas, if suppling 1012% of mixture weight by using grit, the mechanical properties of mixture is going to be improved significantly and can be used for filling the embankment dam.

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