Effect of rusting on steel reinforcement, Civil Engineering

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.

Posted Date: 8/5/2013 6:05:01 AM | Location : United States

Related Discussions:- Effect of rusting on steel reinforcement, Assignment Help, Ask Question on Effect of rusting on steel reinforcement, Get Answer, Expert's Help, Effect of rusting on steel reinforcement Discussions

Write discussion on Effect of rusting on steel reinforcement
Your posts are moderated
Related Questions
Total station - uses and mining: Uses:- Total stations are mainly used by land surveyors and Civil Engineers, either to record features as in Topographic Surveying or to

On a 5-acre level terrain building site, an earthwork contractor has instructed her crew to strip and grub the topsoil of a 60,000-ft 2 proposed building pad to a minus 2-ft sub-g

Streams Not Wholly Alluvial In streams which are not wholly alluvial, consisting of bed of pebbles, rock, etc. the liner waterway is kept equal to the actual surface width of

Pavement Layers And Their Functions Flexible Pavement A typical modern flexible pavement for high traffic is composed of layers as under (Figure). Figure: L

#question why cracks develops on the surface of concrete on the next day of casting?

Question While designing sewer pipes , why vitrified clay pipes commonly is used for pipe size less than 600mm still as precast concrete pipes with PVC lining is used for pipe

differences between highway pavement and airfield pavement

High-yield steel vs. mild steel as road reinforcement High yield steel is the preferred material for the reinforcement of concrete carriageway due to the subsequent reasons: