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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.
Bonding performance to concrete: Epoxy-coated bars vs. galvanized bars Based on the findings of CEB Bulletin 211 the bonding of galvanized bars to concrete is lower in early
uses concrete slump test
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Q. Glazed tiles for Construction Material? Glazed tiles are only meant for dadoes of bath room, Toilet and kitchens etc as they have no strength . Normally 8'' x 4'' g
How to do assignment on the basis of azetropic mixture
In a hydrometer analysis, 0.5 N of soil was mixed in water to form one litre of uniform suspen- sion. The corrected hydrometer reading after a lapse of 60 min. from the start of se
The transmission main from the well field to the community is 2500 ft, the velocity of flow at peak pumping capacity is 3.5 fps, water temperature is 10oC, and pH is 7.5. If free c
A wall with a smooth vertical back and 9 metres high retains a moist cohesionless soil with a horizontal surface. The soil weighs 15 kN/m3 and has an angle of internal friction of
Construction and working of calomel electrode
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