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

Why we need transition slabs in bridges, Q. Why we need Transition slabs in...

Q. Why we need Transition slabs in bridges? In a number of designs, transition slabs are provided on the approach to bridges. For example soils in embankment supporting the ro

Explain the selected bridges - underwater inspection, Explain the Selected ...

Explain the Selected Bridges - Underwater Inspection? Those bridges, which require underwater inspection must be noted for individual inspection and inventory records as well b

Earth dam, earth dam design and its force

earth dam design and its force

Determine the station number - transportation, The local survey crew measur...

The local survey crew measures a distance of 1,135 ft of new drainage pipe that is required for the new road construction. The beginning point for the drainage is located at statio

Fundamental purpose of surveying, give a brief definition of surveying and ...

give a brief definition of surveying and describe its fundamental purposes

Calculate the horizontal distance, Calculate the Horizontal Distance A ...

Calculate the Horizontal Distance A surveyor's total station measured slope distance near station 3245+26.35 is recorded as 437.380-m with a zenith angle of 118º 48' 07" and a

Construction mesurment, Measurement quantity of excavation, concrete, formw...

Measurement quantity of excavation, concrete, formwork as my assignment brief.

Determine the uses of prestressed concrete poles, Determine the uses of Pre...

Determine the uses of Prestressed concrete poles Prestressed concrete poles are commonly mass produced and are used in most countries for power transmission, antenna masts etc

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