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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.
Project Management: This unit starts with the general definition of Project management. Several phases involved in project management are also desribed. Further, the technique
Discuss about the term - End Zone It is the length of a post-tensioned concrete member, at the end, which is required to get a distribution of prestress over the whole of the c
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Supplementary or Untensioned Reinforcement It is that reinforcement, provided in prestressed concrete member, which is not provided in a stretched condition like tendons.
actual meaning of it? Is it a unit to measure the functions of enviroment?
Question What is distinction in principle for conducting surface regularity test and sand test? Answer Purpose of surface regularity test is to assess riding quality
Particle Size Distribution (Gradation): The particle size distribution is determined by passing the aggregates through a set of standard IS sieves (Figure) and determining th
Q. Minimum and maximum area of reinforcement? Minimum area of reinforcement vs. maximum area of reinforcement Beams can be designed to be larger than required for strength
how we calculate barometric leveleing
condition for no tension numerical problem
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