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

Obstacle measurement.., ..describe how u can obtain the length of an inacce...

..describe how u can obtain the length of an inacceble length of a land when a river cross it

Cavities under structures., This is the title for my thesis for masters in ...

This is the title for my thesis for masters in structural engineering. Is it possible to make for me the literature review? I already have my references.

Determine the active thrust on the wall by culmann method, A retaining wall...

A retaining wall with its face inclined at 75° with horizontal is 10 m high and retains soil inclined at a uniform surcharge angle of 10°. If the angle of internal friction of the

Designing level of landings in piers, Question What is designing leve...

Question What is designing level of landings in piers? Answer Landings are designed as resting place for passengers throughout berthing and deserting of vessels. I

Explain the system curves - pumping system, Explain the System Curves - Pum...

Explain the System Curves - Pumping System Non-linear plot beginning on the y-axis at the Total Static Head (TSH) and plotted primarily based on the h f .

Time to remove formwork to cater for early thermal movement, Q. Time to rem...

Q. Time to remove formwork to cater for early thermal movement? Let's take a circular column as an illustration to explain effect of internal restraint to thick sections.  W

Roofs, Dimensions of trusses

Dimensions of trusses

Pycnometer., To determine the specific gravity of fine aggregate (sand) by ...

To determine the specific gravity of fine aggregate (sand) by Pycnometer.

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