State about the prestressing steel, Civil Engineering

Assignment Help:

State about the Prestressing Steel

For prestressed concrete members, the high-tensile steel, used generally, consists of wires, bars or strands. The high tensile strength of steel is generally achieved by marginally increasing the carbon content in steel in comparison to mild steel. High-tensile steel usually contains 0.6 to 0.85% carbon, 0.7 to 1 % manganese, 0.05% of sulphur and phosphorus. The high carbon steel ingots are hot rolled into rods and cold drawn through a process of dies to reduce the diameter and increase the tensile strength. The durability of wires gets improved due to the cold-drawing operation. The cold-drawn wires are then tempered to improve their properties. Tempering or ageing or stress relieving by heat treatment of wires at 150-420°C improves the tensile strength. These cold-drawn wires are generally available in nominal sizes of 2.5, 3,4,5,7 and 8 mm diameter.  #question..


Related Discussions:- State about the prestressing steel

High Sulfate Soils, How do you treat High Sulfate soils, Gypsum? Is it good...

How do you treat High Sulfate soils, Gypsum? Is it good practice to build on it?

Calculate the specific gravity of the soil particles, A piece of clay taken...

A piece of clay taken from a sampling tube has a wet weight of 1.553 N and volume of 95.3 cm 3 . After drying in an oven for 24 hours at 105°C, its weight 1.087 N. Suppose the spec

ENGlLISH, Ask question #WHAT is presentation skill #

Ask question #WHAT is presentation skill #

Determine the percentage of sand, A certain soil has 99% by weight finer th...

A certain soil has 99% by weight finer than 1 mm, 80% finer than 0.1 mm, 25% finer than 0.01 mm, 8% finer than 0.001 mm. Draw the grain-size distribution curve and determine the pe

State the short-term deflections, State the short-term deflections If  ...

State the short-term deflections If  short-term deflections are considered, the instantaneous deflection due to design loads may be calculated using elastic analysis based on t

Measurement of surface runoff and infiltration, Surface runoff travelling o...

Surface runoff travelling over ground surface to reach receiving water involves the following events: i) Rainfall intensity exceeds soil's infiltration rate; ii) Excess water

Determine the strain compatibility method, Determine the Strain Compatibili...

Determine the Strain Compatibility method For estimating the ultimate strength of prestressed concrete members in flexure, 'Strain Compatibility method' may be used. For calcul

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