ABSTRACT
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At one time, Terzaghi stated “There will be no soil mechanics without water.” With men on the moon, we understand that “lunar soil” is totally different from that on earth. Ironically, water is needed to stabilize soil, yet most construction failures are generated from too much water. Until recently, our knowledge of soil mechanics has been based on saturated soils. Indeed, only with rare exceptions can totally saturated soils be found; most soil on earth contains varying amounts of moisture.
