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

What is dead weight, Dead weight Dead loads are the weight of perma...

Dead weight Dead loads are the weight of permanent components of the structures such as the weight of the elements and spheres, casing weight, weight of the false ceiling a

Mechanism of formation of soil plugs, Question What is main mechanism o...

Question What is main mechanism of formation of soil plugs in marine driven steel piles with reinforced concrete infill? Answer Throughout initial driving process, ope

Steel structures, how does battening differ from lacing?

how does battening differ from lacing?

Calculate the total passive earth resistance on the wall, A  retaining wall...

A  retaining wall, 4.5 m high, retains a soil with  c = 2 N/cm 2 ,  φ = 30° and g = 20 kN/m 3 , with horizontal surface level with the top of the wall. The backfill carries a surch

Boundaries of rational method in calculating runoff, Question What are main...

Question What are main boundaries of Rational Method in calculating runoff? Answer Calculation of runoff is compound matter that depends on a lot of factors similar to ground

Traffic surveys, Traffic Surveys: The following traffic surveys are n...

Traffic Surveys: The following traffic surveys are needed for preparing a good road project: Classified Volume Counts This survey is normally carried out for 7 days,

Rehabilitation of Concrete Roads, Step by step rehabilitation strategies wi...

Step by step rehabilitation strategies with drawing, figures, and illustrations

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