Effect of rusting on steel reinforcement, Civil Engineering

Assignment Help:

Effect of rusting on steel reinforcement

Corrosion of steel reinforcement inside a concrete structure is undesirable in the subsequent ways: 

(i)  Presence of rust impairs the bond strength of deformed reinforcement since corrosion takes place at the raised ribs and fills the gap between ribs so evening out the original deformed shape. Basically the bond between concrete and deformed bars originates from the mechanical lock between raised ribs and concrete. Reduction of mechanical locks by corrosion results in the decline in bond strength with concrete.

(ii) Presence of corrosion decreases the effective cross sectional area of steel reinforcement. Therefore the available tensile capacity of steel reinforcement is reduced by a considerable reduction in the cross sectional area.

(iii) Corrosion products occupy about 3 times the original volume of steel from that it is formed. Such radical increase in volume generates significant bursting forces in vicinity of steel reinforcement. Subsequently cracks are formed along steel reinforcement when tensile strength of concrete is exceeded.


Related Discussions:- Effect of rusting on steel reinforcement

Dam, how many types of drainage galleries and foundation treatment

how many types of drainage galleries and foundation treatment

Concrete pavement - thickness, Concrete Pavement: Thickness T...

Concrete Pavement: Thickness The thickness of concrete pavements is determined from the stresses induced due to loads and temperature. The thickness adopted is genera

Diagrids, can we provide base isolation for high rise buildings ? Can we pr...

can we provide base isolation for high rise buildings ? Can we provide it for diagrid structures? if; yes Up to which no of storeys

Internal force of preloaded fasteners, Q. Internal force of preloaded faste...

Q. Internal force of preloaded fasteners? Force in a bolt in a bolted joint relies on the preloading force applied to it at the time of the tightening operation. For example, w

Highway Materials, How to identify bitumen & tar just looking at those two ...

How to identify bitumen & tar just looking at those two binders.

State the net allowable bearing pressure, A footing, 2 m square, is founded...

A footing, 2 m square, is founded at a depth of 1.5 m in a sand deposit, for which the corrected value of N is 27. The water table is at a depth of 2 m from the surface. Verify the

Moisture-density relationship, Moisture-Density Relationship: Since va...

Moisture-Density Relationship: Since various compactive efforts result in varying degrees of compaction, it is necessary to standardize the compactive effort. The most well-kn

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