One way to strengthen low-strength concrete is to control the quality of concrete based on tests to ensure the quality of components and observance of product production instructions, as well as by carrying out tests that control the quality of the final product and checks do.
Steps to strengthen concrete buildings
Control and verification of the manufactured product or reinforcement of the concrete building is carried out in two stages
Fresh concrete stage
Solid concrete stage
Study of concrete drilling test results
Concrete drilling pressure depends on two factors:
Concrete properties and
Test variables
Pulp moisture conditions affect the strength of the saturated sample, which is approximately 10-15% lower than that of the dry sample. As a result, moisture conditions related to the core and hardened concrete are important to consider in determining the true strength of hardened concrete.
Different methods for strengthening concrete
If the pulp is tested when saturated, it is much easier to compare with saturated standard control samples, but there is evidence that moisture loss in the pulp sample may affect the measured resistance.
This problem occurs when the concrete core drilling process involves a few days of soaking or air drying.
This problem raises more suspicion, because these conditions affect the penetration of small cracks under the surface.
Of course, concrete curing or so-called concrete strengthening, in addition to increasing the strength of the core and original concrete, varies with the core cutting time.
Calculating this effect is very difficult and is probably ignored in mature concrete, but it should be considered in concrete with an age of less than 28 days.
Holes within the core reduce the magnitude of the resistance and this can be effective for measuring additional holes when comparing the results obtained in the core with standard control samples from the point of view of matching material specifications and should be taken into account.
Methods of increasing the strength of concrete in general
- Concrete or reinforced concrete jacket
One of the methods that can be used to strengthen concrete buildings is the use of concrete jackets or reinforced concrete coatings. Using this method increases hardness and ductility and generally strengthens concrete structures and strengthens concrete construction.
Different methods for strengthening concrete
- Reinforcement with steel shear wall
Another method that can be used to strengthen a concrete building is the steel shear wall reinforcement method
Recently, steel shear wall concrete strengthening method is also used to strengthen low-strength concrete materials. In this method, steel shear walls are used as a system to strengthen low-strength concrete against lateral loads in designing and strengthening concrete structures and buildings.
The use of this method brings good advantages such as: low construction cost, quick installation, high energy absorption potential, etc. The use of this method has become very popular in countries such as the United States, Japan, and Canada in strengthening concrete buildings.
- Increasing the strength of concrete using microsilica
Nowadays, one of the construction methods that has spread a lot in the world is concrete construction. After the Islamic Revolution, Iran faced a shortage of steel beams and sanctions caused an increase in concrete construction and increased use of concrete.
Concrete buildings are also more resistant to fire, and in addition, because concrete has the ability to insulate against heat and sound, the use of these buildings has increased day by day, and there are many ways to strengthen concrete.
Increasing the strength of concrete by using microsilica in building lightweight concrete has increased the strength of lightweight concrete, and water also has an effect on the strength of concrete and increases its strength.
Also, lightweight concrete and ways to increase its strength using microsilica, which is mechanical properties that increase the strength of concrete.
If in the construction of concrete buildings we can make light concrete slabs using separation blades, the weight of the building will be reduced and, as a result, its destruction due to earthquake will be greatly reduced. This is one of the concrete strengthening methods.
Different methods for strengthening concrete
conclusion
Strengthening concrete buildings is one of the modern topics that most contractors are paying increasing attention today.
Strengthening buildings does not collapse due to weak earthquakes and does not cause many human and financial losses.
You can protect your buildings from earthquakes, fires, demolition, and any other type of accidents by using the services of Pekran Sazan Strengthening Company, which works to strengthen concrete buildings in dozens of cities in different ways.
The specialists and consultants at Bhikran Sazan Company have provided building strengthening services in more than 140 construction projects, from the north to the south of the country, including at least 20 pioneering projects in the country.