Technical tests: full-scale test of connection with peripheral diaphragm
The rigid connection of the beam to the CFT columns using the peripheral diaphragm sheet will have operational, economic and functional advantages. However, according to the requirements of the 10th chapter of the National Building Regulations, the seismic behavior of the connection must be checked through testing.
In line with the technical tests, CFTIRAN company, by using a modern dedicated strong floor laboratory (machine steel collection) and relying on its specialized technical team, in order to solve the problem of retaining joints in accordance with the conditions of areas with high seismicity, compared to finite element modeling and full-scale testing Laboratory samples have been taken. The cyclic curves of the connection indicate that the seismic performance of the connection using the peripheral diaphragm sheet is very favorable and can be used in areas with high seismicity.
Technical tests: Concreting test from height
One of the most important issues in the implementation of steel structures filled with concrete, the concrete mixing plan and the method of pouring concrete inside the columns, especially the issue of concrete falling from a height, the technical team has designed, produced and tested self-compacting concrete with the ability to pour concrete from a height based on international documents.
The characteristics of filling, permeability and resistance to separation of self-compacting concrete are of special importance for the simultaneous operation of steel and concrete in the CFT structure. In order to evaluate the properties of self-compacting concrete, various technical tests are used, such as slump flow test, V funnel and L box.
On the other hand, the characteristic strength of the concrete inside the column will play an important role in the bearing capacity of the column. The characteristic strength of concrete in cylindrical samples indicates the performance of concrete. The tests conducted for self-compacting concrete by the QC team show that the performance of this concrete in CFT structures is effective and important.