Waste from construction and demolition: lost deposit of materials, for lack of recycling | Tunisia News Gazette

Waste from construction and demolition: lost deposit of materials, for lack of recycling

Effective management of construction site waste (construction and demolition waste (CDW) reduces the cost of real estate projects by between 30 and 40% at a time when such waste is a major problem in Tunisia. Each year, the Ministry of the Environment spends 10 million dinars for the transport of CDWs and their landfilling, according to Ibtissem Ben Ahmed, president of the Professional Association of Cleaning, Collecting, Transport and Recycling (NCTRD) stemming from Confederation of Tunisian Citizen Enterprises … (CONECT).

Besides, the number of anarchic deposits of this waste exploded after the revolution to reach about 290. “Black spots” which disfigure the natural and urban landscape harm the environment.

From an economic point of view, it is a waste to be faced, according to experts, present on Thursday, to an awareness day organised by the N.C.T.R.D.

They recommend recycling as an ideal solution for upgrading non-renewable but valuable raw materials (cement, bricks, sand, steel, etc.).

Meeting at the CITET, representatives of municipalities, researchers and experts tried to come back, through presentations, on the state and the solutions to exploit this waste, which, once well treated will provide consideration savings for the private builders or businesses.

Unlike developed countries where 80% of demolition waste is recycled, Tunisia is lagging behind in the recycling of non-renewable materials, which can be used, in particular, for roads. The nature of this waste is adapted to this type of project. Already, 90% of construction and demolition waste is inert waste and can be used as backfill, confirmed the representative of the Technical Center of Materials of Conducting, Ceramics and Glasses (CTMCCV) Mohamed Ben Rekaya.

Some 160,000 cubic meters of construction and demolition waste have been released in the wilderness in recent years, according to Ridha Meksi, Director General of Technical Services at the Municipality of Tunis. “It’s becoming more and more cumbersome,” he says.

“We have to find a solution because Jebel Borj Chakir dump site has notr received this waste for two months now, but the administration continues to cite it in building permits as an authorised landfill for construction waste, He adds in favour of recycling, which he describes as “better solution”.

For her part, Kawthar Machat, a teacher at the ISET in Rades and specialists in demolition and construction waste management projects, emphasises a regulatory blockage. “The property developer, who has to comply with the specifications, is not yet authorised, to use materials and construction and demolition waste for the achievement of his projects,” she notes, calling to follow the example of Italy which succeeded in a project of using this type of waste in the layout of foundation layers of roads. “It’s a very fruitful niche that needs to be encouraged by improving laws and encouraging recycling,” says the academic.

Mechanisms are already available to encourage the exploitation of the results of scientific research in the field of CDW management, says Director of the technopoles at the Ministry of Higher Education and Scientific Research Rim Said. “We are predisposed to financially and technically support the promoters’ initiatives based on scientifically proven results,” she said.

Regarding the National Waste Management Agency (ANGED), Mourad Chabou, chairman of the project for the demolition and construction waste management sector, refers to a draft study on this subject entrusted to an office based on other successful experiences in Canada, France, Luxembourg and Belgium.

The project consists of assessing the current situation, setting up a CDW management system, identifying stakeholders and seeking sources of funding for the subsequent enactment of legislation to determine management of this type of waste, in areas with high urban density such as Tunis, Sfax, Sousse.

Source: TAP News Agency

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