Amirkabir University Ready to Conduct Research on Making High-Quality Lightweight Concrete
“Lightweight aggregate materials play an important role in mechanical and ductility characteristics that should be given special attention. Accordingly, if there is a demand, we are willing to conduct research in this field,” said Alireza Rahayee.
“Our colleagues have studied a set of numerical studies under the effect of various loads on lightweight concrete panels for use in lightweight protective systems as walls that can withstand explosive loads. This is currently in the initial research phase and will be completed based on the needs of the development industry,” he added.
Rahayee, meantime, noted that when the issue of load-bearing capacity for lightweight concrete produced in the country is raised, more attention should be paid to the issue of lightweight aggregates which are available in two types of natural and artificial in Iran.
In a relevant development in December, a faculty member of Islamic Azad University succeeded in designing and implementing a type of environmentally-friendly concrete that reduces pollutants by 50% and is 30% cheaper compared to other samples.
“This type of cement reaches its ultimate strength much faster than Portland cement and inherently has much lower permeability than Portland cement in the early stages; however, calcium aluminate cement, despite its good qualities, has two very key shortcomings that have caused the use of this cement in by engineers to be very low,” Alireza Rasekhi, a faculty member of the Civil Engineering department of Islamic Azad University’s Qeshm branch, told ANA.
“The first problem with this cement is that after a while, a transformation phenomenon occurs in it, which causes a sudden decrease in strength and, as a result, durability in concrete made with calcium aluminate cement, which is a very big drawback and, in addition, it is many times more expensive than ordinary cement,” he added.
“The result of our research was the production of a mixed calcium aluminate cement, which has three key advantages over previous cements. First, its technical specifications and durability have been greatly improved. Second, it is about 30% cheaper than a similar sample, and third, it reduces environmental pollution by about 50%, making it a green or environmentally friendly product,” Rasekhi said.
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