Iranian Specialist Invents Environmentally-Friendly Concrete to Reduce Pollutants by 50%

“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.

In a relevant development in July, Iranian researchers had also tried to find a new way to produce stronger concrete by using low-cost materials.

“If possible, we want to achieve new technologies in high-strength concrete and composite concrete in the near future so that we can brand and send them to the market with lower costs and more accurate materials,” Kamal Khorramdel, a researcher and inventor and a faculty member of the Civil Engineering department of the Islamic Azad University’s Mahabad branch, told ANA.

He stressed that the initial tests have proven successful in this regard.

“We are also working on concrete for the water tanks which are open and can reduce water penetration to zero,” Khorramdel said.

“Since the water inside the tanks contains chlorine and chlorine ions can be corrosive to concrete and reinforcements, the lack of water penetration can prevent the corrosion of concrete and rebars,” he noted.

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