Concrete is one of the most used material in construction. It is made by mixing cement with various aggregates like sand, stone chips, brick chips, brick chips, pebbles, gravel, shale and water. The mixture is then allowed to hardened. It has many advantages, for example it is economical,when ingredients are readily available, it is long lasting and strong, it requires low maintenance, it does not rot, corrode or decay as other building materials. Moreover, it can be moulded in almost any shape, is water and fire resistant and it can withstand high temperatures. However, concrete repairs are needed from time to time because over time it can get damaged.
Problems that makes concrete reparation necessary
There are many reasons why concrete repairs become essential. Some of the main ones are listed below:
• Corrosion of the reinforcing steel: steel are protected inside concrete because the latter is very alkaline which prevents rust. However, sometimes the steel do get rusted and as rust has a greater volume than the steel, the expansion presses against the concrete putting it in tension and causing it to crack and pop off.
• Freeze-thaw disintegration: concrete is a porous material, therefore if water gets in and freezes, it breaks off small flakes from the surface. This is known as scaling and it generally occurs during the first days of winter and get worse over time.
• Drying shrinkage cracks: concrete has more moisture in it when placed than is consumed by the hydration reaction. As that water evaporates, the concrete shrinks, thus causing cracks.
• Plastic shrinkage cracks: if the surface is allowed to dry out before the concrete has gained strength, a pattern of cracks will form on the surface. These cracks are nonetheless very shallow and narrow.
Get help to repair the damage from professionals
As can be seen, damage to concrete can have various causes and neglecting to tackle the situation quickly can worsen the problem. Fortunately, many companies specialise in concrete repairs. People residing in the Dandenong South region can hire the services of Peninsula Paving, concrete repair professionals of good repute.