Factors Causes of Concrete Cracks

To see how the properties of reinforced concrete which can cause cracks we have to look at the process from the initial manufacture of reinforced concrete. At the beginning of the manufacture of reinforced concrete by mixing the constituent materials such as gravel, sand, water, cement, and steel reinforcement. In the process of concrete pengerasannya would decrease the volume of the initial volume. Generally this is due to the water contained in the concrete mix will experience partial evaporation reduces the volume of reinforced concrete.

So when is conditioned upon the concrete hardens and the result of the reduced volume of concrete that will cause shrinkage in the concrete but the concrete is allowed to shrink without the imposition of the concrete will not have cracks. But in actual field conditions no concrete that does not undergo loading. Since there are no beams or columns on a building that stands alone but will be concatenated to one another and this will make the reinforced concrete works withstand the loads on the building.

Can not be ignored temperatures can also cause cracks in reinforced concrete. Mean temperature is the temperature of the concrete mix here as having pavement. Because at the moment experiencing perkerasaan reinforced concrete mixture temperature arising from the reaction of water with cement will continue to increase. Hence, in the concrete mix temperature is too high, when the concrete is hard often arise cracks on concrete surfaces.

Lots of cracks in reinforced concrete structures caused by unfavorable constituent material. Some of the things that is often found them fine aggregate or sand is less clean, still mixed with mud so that the bond between the PC and the aggregate becomes disconnected. So when the concrete dries it cracks will easily occur. Often I find the structure is made of reinforced concrete with a less precise way. The most common case is the thickness of the reinforcement to the concrete surface is too great. This sebenanrnya less precise because the function of the steel reinforcement is to resist latitude (on beam and plate), deformation due to deflection, and shear force.

If too thick concrete cover large common dining cracks starting to surface on the concrete structure reinforcement in it. Reinforcement should be made a bit out, and wrap a blanket or skin reinforcement is made as thin as possible (1.5 s / d 2 cm). Because tensile and compressive force greatest place on the end of the concrete surface.