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

Basic things used in road construction, Basic things used in road construct...

Basic things used in road construction: Water Absorption : The quantity of water absorbed by aggregates. Aggregate Impact Value : The percentage by weight of crushed ma

Calculate the monthly payment for home mortgage, Your home mortgage is $300...

Your home mortgage is $300,000 for 30 years with a nominal annual rate of 7%. The monthly payment is most nearly: Solution: n = 360 months interest = 7%-annual ÷ 12-months/year

Maintenance of drainage and shoulders, Maintenance of Drainage: Maint...

Maintenance of Drainage: Maintenance of drainage will ensure that the run-off is taken away from the runway efficiently. The side ditches and buried pipes should be cleaned r

Concrete, describe in detail the uses of concrete

describe in detail the uses of concrete

Discuss about the post-tensioning systems, Discuss about the post-tensionin...

Discuss about the post-tensioning systems In most of post-tensioning systems, when the cable is tensioned and the jack is released to transfer prestress to concrete, the fricti

Light-weight aggregate prestressed concrete, Light-weight Aggregate Prestre...

Light-weight Aggregate Prestressed Concrete The use of  light-weight aggregate concrete for prestressed concrete construction is well established. The main advantage of  light-

Find the maximum stress, Find the maximum stress: A circular bar rigid...

Find the maximum stress: A circular bar rigidly fixed at both ends is 1 m long and tapers uniformly from 20 cm diameter at one end to 10 cm diameter at the other end. Find the

Explain information processing and perception, Explain Information Processi...

Explain Information Processing and Perception - Driver Performance The time required to respond successfully to any driving situation, such as an emergency, involves four stage

Casing has to be left in for mini-piles, Question What are thought in d...

Question What are thought in determining whether casings have to be left in for mini-piles ? Answer Contrary to most of pile design, design of min-piles is controlled

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