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What is Thermo-electric prestressing
We know that, stretched tendons are used in prestressed concrete. Stretching of tendons may be accomplished by using jacks or by other means. Thermo-electric prestressing is just another method of stretching the tendon wiers. We know that if we increase the temperature of a metal, it expands. As the name suggests, in Thermo-electric prestressing, temperature of tendon wires is increased by passing electric current for a short duration. This temperature increase, taking place within 3-5 minutes, may be of an order of 300-400°C. The bars, which may undergo an expansion of about 0.4-0.5% in length, try to shorten at cooling butare checked by fixed anchors at the two ends.
Define Inspection of Steel or Cast Iron Substructures? Corrosion is the principal cause of deterioration in steel waterfront substructures. On bare un-protected steel pilings,
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what is a causeway
what is the actual quantity of water to be mixed in various grade of concrete and also the size of gravel to be mixed with in RCC work. Also I want to know the difference between a
what is the total volume required for the gravel material of 6.5mx2314mx0.1m with a relative density of 2.919 and a loose bulk density of 1668kg/m3
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State the group efficiency of a rectangular group of piles with 4 rows, 3 piles per row, the uniform pile spacing being 3 times the pile diameter. If the individual pile capacity i
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