Latest News Archive

Please select Category, Year, and then Month to display items
Previous Archive
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

Qwaqwa Campus opens: Prof. PA Mbati's speech
2005-01-22

Official welcome speech by Prof. PA Mbati for 2005 first year students held on Saturday 22nd January 2005. Program Director, The Chief Director Operations Rev. Kiepi Jaftha, Dean of Students Dr. Natie Luyt, Program Head of the Faculty of Humanities, Dr. Elias Malete, Program Head of Faculty of Natural and Agricultural Sciences, Prof. Riaan Luyt, Acting Program Head of the Faculty of Economics and Management Sciences Prof. Andries Venter, Deputy Director Student Affairs Mr. Teboho Manchu, Coordinator Finance: Mrs. Elizabeth Nchapi, Senior Librarian Mr. Stoffel Kok, Senior Magistrate Mr Saul Mohosho, SRC President Mr. Tello Motloung, members of staff, invited guests, parents, guardians, my dear students, ladies and gentlemen.

It is indeed my pleasure to welcome you to the official welcoming ceremony of the UFS-Qwaqwa Campus 2005 first year students. Our Rector and Vice Chancellor Professor Frederick has requested me to pass to you his warmest wishes and regards on this special occasion. I am confident that the orientation exercise in which you have participated has achieved the desired effect of introducing you to your new way of life here on campus, and that you are now sufficiently prepared to get on with the rigors of being a student at this University.

Following the restructuring of the higher education landscape, the Qwaqwa campus was incorporated into the University of the Free State with effect from January 1 2003 . As a consequence, Management was faced with a whole complex series of challenges including, primarily making the campus financially viable, but also ensuring that it remains relevant in it’s core business as a satellite campus of the University of the Free State in terms of its teaching, learning, research and community service responsibilities.

A whole series of strategic planning workshops were conducted last year with both internal and external stakeholders. Various important strategic objectives were flagged out, and the next level of consultation will take place soon. I know that there is a lot of eagerness, sometimes to the level of impatience to see this process completed as quickly as possible. But again on the other hand, due to the far reaching consequences of any hasty decisions, plus the need for a carefully planned process, we need to be a little more patient before the implementation of the strategic objectives is implemented. You will be kept informed as this important and critical aspect in the evolution of our campus takes place.

As a response to the need for a more effective governance model on the Qwaqwa campus, a review of the governance structure was completed towards the end of 2004 and will soon serve before the Executive of the Executive Management for approval.

Due to the importance that top management attaches to the development of an effective governance on the Qwaqwa campus, the process was facilitated by an internationally acclaimed consultant. Again the contents of the revised governance model will be made known to the campus and the broader community once it is approved.

I am glad to report that in recognition of the need to improve the infrastructure on campus to provide a conducive learning atmosphere to our students, a total of 8.2 million rands was made available towards the end of 2004 for recapitalization of specifically our student residences and lecture venues. The first phase of the residence renovation is completed and residences C, D and E have now been officially handed over to the University by the Contractor. Among the features of the renovated residences is that they will now computer rooms, kitchenettes for cooking, and a redesigned TV room. The rooms have even been fitted with heaters. Our challenge will now be to maintain our newly acquired facilities and to ensure that they do not again deteriorate to an un-acceptable level. The second phase of renovation will start soon.

As indicated in my address during the orientation week, our obligation to you as a campus is to offer you quality training to the best of our ability, and to disseminate this knowledge to you within a conducive atmosphere worthy of good learning. On the other hand, our students have to take advantage of this opportunity to acquire the necessary skills and training in the various academic programs that we offer on campus.

We have a very simple agenda on this campus – our vision is to continuously strive to build and develop the Qwaqwa campus of University of the Free State into a truly quality institution of higher learning in our country. To develop a tradition and culture in which we are proud of who we are, and constantly and tirelessly working towards excellence in our academic programs, and other non-academic but core and important aspects in your growth and development such as sport and community service. To nurture young conscientious citizens who are aware of their duties and responsibilities. Ultimately to produce hard working young people who fully exploit their potentials, and who will serve this country with diligence when unleashed into the real world in effectively managing their roles and responsibilities in society, whether in private or government civil service.

I would like to encourage that the various stake holders of this campus, the students, academic, administrative and support staff, and our broader community, to work together in harmony for the well being of our campus. For this campus to continue to be relevant in the environment that we find ourselves, there is a need for continuous engagement of its various stake holders, and genuinely listening to each other. We must continuously and regularly keep our feelers on alert in order that we can remain relevant.

I am particularly inviting our parents and guardians, the alumni of this campus, and leaders from our community to join hands with us in seeking solutions to the various challenges that we continue to face on campus. I am open for frank and honest discourse on the best way forward for our campus.

The University of the Free State is committed in making tertiary education accessible to as many students as possible. In this regard, students who do not have the required ‘M’ score to gain entry into main stream classes are given an opportunity to study in the highly successful ‘bridging program’ in which learners are integrated with main stream students but with fewer courses to tackle in order to ensure success. This is done on the premise that such students have the potential to pursue a degree course, and that therefore within a well structured program, they can make a success of their lives.

The University is conscious of the fact that in many instances several academically deserving students fail to be admitted into university due to financial reasons. For students who are academically deserving but who because of reasons of poverty cannot pay the requisite fees, the university is able to assist such students through the National Financial Aid Scheme – commonly known as NSFAS, and University Merit Awards. Other incentives such as Sports bursaries are also available.

Please remember that it is important to balance your life on campus and the phrase ‘a healthy mind in a healthy body’ aptly describes this statement. Ensure that you participate in sport and cultural activities of this campus so that you can develop and strengthen the various God-given talents that you have been blessed with.

A second major ingredient for your success on campus is discipline and respect for rules, policies and procedures that govern the University of the Free State , and respect for your fellow students. Good discipline is a major contributory factor to success in life, and more so in your formative academic life at University. This means for example that you must attend all your lectures, complete your assignments on-time and visit the library frequently. Please manage your time wisely and responsibly. Remember that as a university student, you are basically the master and architect of your own destiny.

Think very carefully when you are confronted with difficult situations, be they negative peer pressure, or temptations to indulge in intoxicating drugs, and make the right choice.

The University has well trained personnel including a social worker, a psychologist and counselor, and members of the student affairs division under the leadership of Mr. Teboho Manchu, Deputy Director Student Affairs, who are available to assist whenever you require their help.

Today is also a special day because we have officially inaugurated the SRC President and the rest of the SRC leadership. I am sure that you all join me in congratulating the SRC for being elected to their leadership roles for 2005. Mr. SRC president and your team, please remember that you now have a huge responsibility in carrying out the aspirations of the student body on campus. I want to wish you luck and success as you champion the rights of your constituents, which I believe and trust will be compatible with management’s expectations with regard to quality teaching and learning on campus. As you are aware, Management values the input that the student leadership makes in the operational management of the affairs of this campus, and we look forward to a cordial, non-confrontational working relationship with a view of rendering un-paralleled service on campus.

Mr. Program Director, allow me to wish everyone here a successful and prosperous year. May the good Lord give us the strength and courage to overcome any obstacle that may be placed in our way in the course of our work in 2005.

We use cookies to make interactions with our websites and services easy and meaningful. To better understand how they are used, read more about the UFS cookie policy. By continuing to use this site you are giving us your consent to do this.

Accept