BACKGROUND OF TESTING
In the engineering sense, in general the land is defined as a material consisting of aggregates. solid mineral minerals that are not chemically bonded to one another and of organic ingredients that have been crushed accompanied by liquids and gases that fill in the space of vacant space between the solid particles. Land is useful for building materials on a wide range of work in civil engineering environments. In general, the materials forming the earth's crust are distinguished over soil and rocks. Soil is a soft layer also has a granular grain that loose, such as rock is a layer of hard and strongly attached. Therefore the soil is considered to consist of a dense grain tissue and has a cavity or pore. The cavity or pore may be filled with water and air and even filled by both at once, so that the ground state can be stated Dry (if the cavity is fully filled by air) Saturated (if the cavity is fully filled by water). Saturated part of Gika cavities filled with water and air). A form (phase) is a part of the soil side physically and chemically different from other parts, Soil is a part having phase like: Solid (usually mineral grains). Liquid (usually water). Gas (usually air). Soil science has so far developed and soil science is an exact science that can determine the overall state of the soil with a single test, but because the soil is not the same, the test must be done several times if the location of the land will be used for a construction.