Students make paving materials from plastic bags
Five students in Hanoi have successfully produced a street paving material from plastic bags.
"Plastic bags are composed of polymers and we have learnt about polymer concrete at the university," said Anh.
By using what they have learnt, the group then tried making construction materials from sand, gravels and nylon bags. They later went to the Soc Son dumping site in order to find their desired materials.
The bags were cleaned and dried. Duc said the most difficult step was to find the accurate mixing ratio. After several failed experiments, they finally found the answer after boiling the whole bags. The materials were mixed and boiled together. The mixture was then poured into a mould and pounded into the final product.
"We used 50 samples for the experiments. The plastic bags are the adhesive that connects everything together," Duc said.
The group also received much help from lecturer Pham Huy Khang who provided guidance, equipment and room for their experiments.
"Their project is very practical and may help deal with a part of the plastic waste. If it is used in pavement paving in Vietnam, the cost will not be higher than other methods," Khang said.
Viphavady Inthapatha, a member from Laos, said, "I really happy to be able to join this project. It is meaningful to Vietnam and to Laos. I hope I can use this method in my country."
Their project has won the first prize in the university's student scientific research conference. The group has submitted the project to participate in the national environmental contest.
Mixing the materials
"Plastic bags are composed of polymers and we have learnt about polymer concrete at the university," said Anh.
By using what they have learnt, the group then tried making construction materials from sand, gravels and nylon bags. They later went to the Soc Son dumping site in order to find their desired materials.
The group and lecturer Pham Huy Khang (third from the right)
The bags were cleaned and dried. Duc said the most difficult step was to find the accurate mixing ratio. After several failed experiments, they finally found the answer after boiling the whole bags. The materials were mixed and boiled together. The mixture was then poured into a mould and pounded into the final product.
"We used 50 samples for the experiments. The plastic bags are the adhesive that connects everything together," Duc said.
The group also received much help from lecturer Pham Huy Khang who provided guidance, equipment and room for their experiments.
"Their project is very practical and may help deal with a part of the plastic waste. If it is used in pavement paving in Vietnam, the cost will not be higher than other methods," Khang said.
Viphavady Inthapatha, a member from Laos, said, "I really happy to be able to join this project. It is meaningful to Vietnam and to Laos. I hope I can use this method in my country."
Their project has won the first prize in the university's student scientific research conference. The group has submitted the project to participate in the national environmental contest.
Leave your comment on this story