What is thermo-electric prestressing, Civil Engineering

Assignment Help:

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. 


Related Discussions:- What is thermo-electric prestressing

Define the meaning of circular prestressing, Define the meaning of circular...

Define the meaning of circular prestressing In circular prestressing, tendon wires are wrapped under tension over the concrete pipes which are pre-cast. The tension in the ten

Use of PFA and GGBS, Q. Use of PFA and GGBS? Both PFA and GGBS are by-p...

Q. Use of PFA and GGBS? Both PFA and GGBS are by-products of industry and use of them is ecologically friendly. Most significantly, with PFA and GBS adopted as partial replacem

Low cost roads connecting villages, Low Cost Roads Connecting Villages: ...

Low Cost Roads Connecting Villages: Problem of Village Connectivity It is estimated that nearly 45 per cent of India's villages are not connected by an all-weather ro

Enumerate the term - failure due to crushing of concrete, Enumerate the ter...

Enumerate the term - Failure Due to Crushing of Concrete Over reinforced pre-stressed concrete members, provided with a large amount of pre-stressing steel or relatively small

Abc, uses concrete slump test

uses concrete slump test

Defaults for precast concrete pipes made by spinning, Q. Defaults for preca...

Q. Defaults for precast concrete pipes made by spinning? Small diameter precast concrete pipes are generally manufactured by spinning method. The spinning method fundamentally

Define the term - post-tensioned concret, Define the term - post-tensioned ...

Define the term - post-tensioned concret In the Prescon and B.B.R.V. systems button heads are created at the ends of tendons. In the case of Prescon system, 2 to 130 tendon wir

Explain plate loading test, Q. Explain Plate loading test? In general i...

Q. Explain Plate loading test? In general iron plates either 60 cm squares or 75 cm dia and 16 mm thick are used, size of plate should not be less then 1/5th of the width of f

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd