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

Determine about the statement - failure at cracking load, Determine about t...

Determine about the statement - Failure at Cracking Load This brittle mode of failure is likely to occur in those pre-stressed elements that are concentrically pre-stressed wit

Loss of prestress due to elastic shortening, Loss of prestress due to elast...

Loss of prestress due to elastic shortening At the transfer of prestress, tensile stresses of tendons are transferred to concretc in the form of compressive stresses. Due to t

Survey, How to find included angle during partical

How to find included angle during partical

Cantilever beam, The problem in the link below. ">http://www.expertsmind....

The problem in the link below. ">http://www.expertsmind.com/questions/plot-vertical-displacement-cantilever-beam-30134382.aspx#

Grade of cement, Grade of Cement: In India, the following grades of c...

Grade of Cement: In India, the following grades of cement are used for roads : Ordinary Portland Cement (OPC) Grade 33 Grade 43 Grade 53 Portland Pozz

Asphalt mix design – durability and stability, Q. Asphalt mix design - dura...

Q. Asphalt mix design - durability vs. stability? The main aim of asphalt mix design is to achieve a mix with economical blending of aggregates with asphalt to achieve the foll

Concrete, what is the heat of hydration and gel space ratio?

what is the heat of hydration and gel space ratio?

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