wash boring

soil boring test

Soil Boring test process service ASTM D1587

Soil boring with was...

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เดือนมิถุนายน 2557 เน้น เจาะดินแบบ wash boring

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Wash boring is soil boring test with motorized drilling machine

Wash boring is soil boring test implement by water injection passing drilling rod through borehole with high pressure water pump and flow to chopping bit for soil impingement or soil mastication. Soil was damaged until size of soil is smaller which soil is moved up at the borehole wall by water and flowed down in