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23 June 2021 | Story Leonie Bolleurs | Photo Supplied
The Department of Engineering Sciences (EnSci) – under the leadership of Dr Abdolhossein Naghizadeh – is heading a collaboration of scientists to create a green concrete that will reduce the impact of cement on the environment.

Conventional cement production is responsible for more than 6% of the overall carbon emissions in the world, which ultimately affects global warming.

The Department of Engineering Sciences (EnSci) at the University of the Free State (UFS) – under the leadership of Dr Abdolhossein Naghizadeh – is heading a collaboration of scientists from universities in South Africa and abroad to create a green concrete that will reduce the impact of cement on the environment.

This product has the potential to be used as an alternative to conventional concrete in large-scale constructions such as residential buildings and infrastructure, as well as small-scale constructions such a pavements and brickworks. 

Dr Nagizadeh, whose passion is cement and green concrete, says the idea of eco-friendly concrete was considered by European researchers a few years ago; however, this technology is still in its initial stages and has not been researched and employed at industrial scale yet. He believes that it is due to the complexity of the preparation process, and the relatively aggressive chemicals used in green concrete mixtures.

Expertise and equipment 

With his knowledge and experience of the product, Dr Naghizadeh – who joined EnSci in 2020 – has been appointed project leader of a collaborative group of scientists from the Universities of Johannesburg, KwaZulu-Natal, Yaoundé in Cameroon, and the Erzurum Technical University in Turkey.  

“Since there are only a limited number of researchers in this field, EnSci is benefiting from the expertise of this international collaboration. The proficiency of this group of scientists are keeping the project current, based on the latest findings in the research area,” says Louis Lagrange, Head of the Department of Engineering Sciences. 

Based on this new capacity, the department decided to establish and equip a new laboratory facility dedicated to cement and concrete research, with a specific current focus on green concrete. 

In this laboratory, they want to create formulations of green concrete, based on user-friendly materials. Furthermore, they aim to simplify the preparation and mixing process. “This can introduce a more eco-friendly, desirable product that can easily be employed extensively in the construction industry,” says Lagrange.

Benefits and other advantages

Besides its ability to reduce the impact on the environment through reduced carbon emissions, the product is also described to perform at equal or even superior strength and durability compared to conventional concrete, with potentially substantial environmental and economic benefits. 

This product is also primarily made from waste materials or industrial by-products. Dr Naghizadeh explains it as follows: “Normal concrete consists of conventional (Portland) cement, sand, stone and water, while in green concrete the conventional cement part of the concrete mix is replaced by industrial wastes or by-products and alkali solutions. These alternative materials are mostly aluminosilicate materials such as fly ash (residue from coal burning process in power plants) and slag (waste material from iron extraction processes).”

“Using these waste substances as binding material in green concrete can, apart from the environmental benefits, also reduce waste and contribute to the circular economy. Annually, more than 36 million tons of fly ash are produced in South Africa alone, of which more than 90% is deposited at landfill sites. Reuse of these waste materials will moderate the related waste deposition issues, such as air and groundwater pollution.”

Production of green concrete

Currently, green concrete is mostly produced in two parts: a solid raw material and an alkali activation solution. With their project, the research group wants to develop green concrete in a powdered form, to be mixed with water, instead of a chemical. Dr Nagizadeh estimates that the construction industry will be able to benefit from their work in about two years’ time when they will have a user-friendly green concrete product ready. 

Apart from putting an eco-friendlier concrete on the market, this project is also establishing a brand-new research niche in the UFS Department of Engineering Sciences. According to Lagrange, this research has the ability to attract postgraduate students and other researchers. He is also looking forward to the international academic recognition that EnSci will receive through published articles in leading international journals, and the participation of researchers in accredited conferences arising from this project. 

Lagrange is pleased that the project is establishing EnSci as a research player of note in the engineering field, specifically in the green engineering field. 

News Archive

UFS law experts publish unique translation
2006-06-21

Attending the launch of the publication were from the left:  Prof Boelie Wessels (senior lecturer at the UFS Faculty of Law), Prof Frederick Fourie (Rector and Vice-Chancellor of the UFS), Prof Johan Henning (Dean: UFS Faculty of Law) and Adv Jaco de Bruin (senior lecturer at the UFS Faculty of Law). Prof Wessels translated the treatise from corrupted medieval lawyer Latin into English, Prof Henning is the leading author and initiator of the publication and Adv de Bruin assisted with the proofreading and editing. Photo: Stephen Collett

UFS law experts publish unique translation of neglected source of partnership law

The Centre for Business Law at the University of the Free State (UFS) has translated a unique long neglected Roman-Dutch source of the law of partnership law from Latin into English.  This source dates back to 1666. 

The book, called Tractatus de Societate (A Treatise on the Law of Partnership), by Felicius and Boxelius is published as Volume 40 in the research series Mededelings van die Sentrum vir Ondernemingsreg/Transactions of the Centre for Business Law.  It is the first translation of this Roman-Dutch source into English and comprises of a comprehensive discussion of the South African common law of partnerships.  

“Apart from various brief provisions dealing on a peace meal and an ad hoc basis with diverse matters such as insolvency, there is no comprehensive Partnership Act in South Africa.  The law of partnership in South Africa consists of South African common-law, which is mainly derived from Roman-Dutch law,” said Prof Johan Henning, Dean of the Faculty of Law at the UFS.  Prof Henning is also the leading author and initiator of this comprehensive publication.

“Countries such as America, England, Ireland and The Netherlands have drafted or are in the process of establishing new modern partnership laws in line with new international guidelines, practices and commercial usages,” said Prof Henning.

“However, in South Africa the most recent policy document released by the Department of Trade and Industry explicitly excludes partnership law from its present company law reform programme and clearly regards this as an issue for another day,” said Prof Henning.

“Unless there is a political will to allocate the necessary resources to a comprehensive partnership law revision program, it is a practical reality that South Africa will not have a modern Partnership Act in the foreseeable future,” said Prof Henning. 

According to Prof Henning South African courts have been using the Roman-Dutch partnership law sources as authority.  “The English Partnership Act of 1890 is not binding and the English text books should therefore be approached with caution,” said Prof Henning.

“A treatise on the law of partnership that has been regarded by South African courts as an important common law authority is that of  a Frenchman by the name of Pothier.  This treatise was translated into English and was regarded as an au­thority of significance in The Netherlands towards the end of the eighteenth century,” said Prof Henning. 

“Pothier’s opinions are however not valid throughout in the Roman-Dutch partnership law as it did not apply to the Dutch province of The Netherlands and it sometimes also rely on local French customs for authority,” said Prof Henning.

For this reason the Centre for Business Law at the UFS decided to focus its attention again on the significance of the comprehensive treatise of Felicius and Boxelius on the Roman-Dutch partnership law.  Felicius was an Italian lawyer and Boxelius a Dutch lawyer.

This long neglected source of partnership law was published in 1666 in Gorkum in The Netherlands.  "A significant amount of Roman-Dutch sources of authoritive writers trusted this treatise and referred to it,” said Prof Henning.

The translation of the treatise from corrupted medieval lawyer Latin into English  was done by Prof Boelie Wessels, a very well-known expert on Roman Law and senior lecturer at the UFS Faculty of Law.  Prof Wessels, who  has 15 degrees, spent almost ten years translating the treatise.  The proofreading and editing of the translation was done by Prof Henning and Adv Jaco de Bruin, a senior lecturer at the UFS Faculty of Law.

“We want the South African courts to use Volume 40 in the research series Mededelings van die Sentrum vir Ondernemingsreg/Transactions of the Centre for Business Law as the primary source of reference when cases where Roman-Dutch Law partnership law principles are involved, are ruled on,” said Prof Henning.

The first part of the publication comprises of selected perspectives on the historical significance of the work as well as a translation of selected passages. “The intention is to follow this up expeditiously with the publication of a very limited edition of a complete translation of the work,” said Prof Henning.

A total of 400 copies of the publication will be distributed to all courts, the Appeal Court and the Supreme Court.

Media release
Issued by: Lacea Loader
Media Representative
Tel:   (051) 401-2584
Cell:  083 645 2454
E-mail:  loaderl.stg@mail.uovs.ac.za
21 June 2006

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