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Question
What is key role of drilling fluid in rotary drilling in site search?
Answer Drill fluid in rotating serves two main reasons.
(i) Facilitate rotation of drilling tube during rotary drilling.
(ii) Do something as a cooling agent to cool down heat generated during drilling operation. Traditionally, water is in general employed as drilling fluid. Yet, it suffers from following problems-
(i) It affects constancy of nearby ground with introduction of water into borehole
(ii) It affects excellence of instance by changing water content of soil samples collected from borehole or drillhole.
Explain the term - Non-bonded Prestressed Concrete It is a method of construction in which the tendons are not bonded to the concrete. Ducts, housing the tendons, are not grout
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Estimate the Activity Durations The total labor cost for emergency bridge rehabilitation on an interstate highway is $5,716,440. The average crew-hour cost is $15,879 for this
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Ground settlement occurs when pipe-jacking machine enters mixed ground with soils and boulders? The rate of cutting through soils is faster than cutting through boulders for pi
introduction
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