For every 20 tonnes of carbon dioxide that enter the atmosphere due to human activity, one comes from the kilns of cement factories.
It is a paradox – concrete is arguably the most sustainable building material known to man, yet the sheer quantity produced worldwide puts it among the top contributors of human CO2 emissions.
Low-carbon concretes, such as the one being developed at the Ecole Polytechnique Federale de Lausanne (EPFL) in Lausanne, Switzerland, could help to bring down these emissions.
The demand for concrete in fast-growing countries such as the UAE is already enormous, but is set to be dwarfed by that from emerging economies such as India and Brazil in the coming decades.
The sooner we can make concrete with less emissions, the better.
The basic recipe for concrete has hardly changed in millennia. Sand or gravel is mixed with a glue-like binder, composed of cement and water, to form the grey artificial material that we are now all too familiar with.
The Romans made cement by grinding volcanic ashes and lime. Today’s variant, Portland cement, is made by heating limestone in a kiln.
This step is responsible for the lion’s share of emissions – each tonne of cement produced emits roughly the same amount of CO2.
But for a lot of building purposes, nothing beats cement. So how can it be made without the environmental damage?
Over the past decade, people have got better at making concrete that contains a portion of “cement-like” materials, and thereby have shrunk concrete’s carbon footprint significantly.
But it is proving difficult to go any further using today’s most common substitutes.
Fly ash, for instance, is produced in coal-fired power plants. But would it really make sense to burn more coal to produce greener concrete?
And countries such as Switzerland and Brazil that use little or no coal to generate electricity need other options.
Other materials share similar drawbacks. They are limited geographically, or the concrete made with them simply is not as good as conventional concrete.
Seeking a viable substitute using materials that are both abundant and affordable, we have developed a formulation made by mixing heated clay and ground limestone.
It is good enough to replace just under half the cement used to make concrete without making the concrete second-rate.
We ran a full-scale test in collaboration with a factory in Cuba and a pilot test in India, deliberately trying to use low-grade raw materials in sub-optimal production conditions.
Despite that, the outcome was nothing short of a miracle – a cement good enough to be used in the same way as ordinary Portland cement, but with a 30 per cent smaller carbon footprint – largely because heating clay emits less CO2 than limestone.
And because it uses low-grade, locally available raw materials, its price stays competitive.
The biggest challenge now is winning over the building industry. It took centuries for concrete to achieve the high, reliable quality that makes it ubiquitous in our cities today.
In contrast, we do not have the luxury of centuries to fine-tune our formulation. But thankfully, technology, know-how, and a certain sense of urgency are on our side.
Karen Scrivener is a professor of construction materials at the Ecole Polytechnique Federale de Lausanne
UAE tour of the Netherlands
UAE squad: Rohan Mustafa (captain), Shaiman Anwar, Ghulam Shabber, Mohammed Qasim, Rameez Shahzad, Mohammed Usman, Adnan Mufti, Chirag Suri, Ahmed Raza, Imran Haider, Mohammed Naveed, Amjad Javed, Zahoor Khan, Qadeer Ahmed
Fixtures:
Monday, 1st 50-over match
Wednesday, 2nd 50-over match
Thursday, 3rd 50-over match
MATCH INFO
Uefa Champions League, last-16, second leg (first-leg scores in brackets):
PSG (2) v Manchester United (0)
Midnight (Thursday), BeIN Sports
SPEC%20SHEET%3A%20APPLE%20M3%20MACBOOK%20AIR%20(13%22)
%3Cp%3E%3Cstrong%3EProcessor%3A%3C%2Fstrong%3E%20Apple%20M3%2C%208-core%20CPU%2C%20up%20to%2010-core%20CPU%2C%2016-core%20Neural%20Engine%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EDisplay%3A%3C%2Fstrong%3E%2013.6-inch%20Liquid%20Retina%2C%202560%20x%201664%2C%20224ppi%2C%20500%20nits%2C%20True%20Tone%2C%20wide%20colour%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EMemory%3A%3C%2Fstrong%3E%208%2F16%2F24GB%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EStorage%3A%3C%2Fstrong%3E%20256%2F512GB%20%2F%201%2F2TB%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EI%2FO%3A%3C%2Fstrong%3E%20Thunderbolt%203%2FUSB-4%20(2)%2C%203.5mm%20audio%2C%20Touch%20ID%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EConnectivity%3A%3C%2Fstrong%3E%20Wi-Fi%206E%2C%20Bluetooth%205.3%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EBattery%3A%3C%2Fstrong%3E%2052.6Wh%20lithium-polymer%2C%20up%20to%2018%20hours%2C%20MagSafe%20charging%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3ECamera%3A%3C%2Fstrong%3E%201080p%20FaceTime%20HD%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EVideo%3A%3C%2Fstrong%3E%20Support%20for%20Apple%20ProRes%2C%20HDR%20with%20Dolby%20Vision%2C%20HDR10%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EAudio%3A%3C%2Fstrong%3E%204-speaker%20system%2C%20wide%20stereo%2C%20support%20for%20Dolby%20Atmos%2C%20Spatial%20Audio%20and%20dynamic%20head%20tracking%20(with%20AirPods)%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EColours%3A%3C%2Fstrong%3E%20Midnight%2C%20silver%2C%20space%20grey%2C%20starlight%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EIn%20the%20box%3A%3C%2Fstrong%3E%20MacBook%20Air%2C%2030W%2F35W%20dual-port%2F70w%20power%20adapter%2C%20USB-C-to-MagSafe%20cable%2C%202%20Apple%20stickers%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EPrice%3A%3C%2Fstrong%3E%20From%20Dh4%2C599%3C%2Fp%3E%0A
Abu Dhabi GP schedule
Friday: First practice - 1pm; Second practice - 5pm
Saturday: Final practice - 2pm; Qualifying - 5pm
Sunday: Etihad Airways Abu Dhabi Grand Prix (55 laps) - 5.10pm
Who has lived at The Bishops Avenue?
- George Sainsbury of the supermarket dynasty, sugar magnate William Park Lyle and actress Dame Gracie Fields were residents in the 1930s when the street was only known as ‘Millionaires’ Row’.
- Then came the international super rich, including the last king of Greece, Constantine II, the Sultan of Brunei and Indian steel magnate Lakshmi Mittal who was at one point ranked the third richest person in the world.
- Turkish tycoon Halis Torprak sold his mansion for £50m in 2008 after spending just two days there. The House of Saud sold 10 properties on the road in 2013 for almost £80m.
- Other residents have included Iraqi businessman Nemir Kirdar, singer Ariana Grande, holiday camp impresario Sir Billy Butlin, businessman Asil Nadir, Paul McCartney’s former wife Heather Mills.
Hunting park to luxury living
- Land was originally the Bishop of London's hunting park, hence the name
- The road was laid out in the mid 19th Century, meandering through woodland and farmland
- Its earliest houses at the turn of the 20th Century were substantial detached properties with extensive grounds
Zayed Sustainability Prize
RESULTS
6.30pm Handicap (TB) $68,000 (Dirt) 1,200m
Winner Canvassed, Par Dobbs (jockey), Doug Watson (trainer)
7.05pm Meydan Cup – Listed Handicap (TB) $88,000 (Turf) 2,810m
Winner Dubai Future, Frankie Dettori, Saeed bin Suroor
7.40pm UAE 2000 Guineas – Group 3 (TB) $125,000 (D) 1,600m
Winner Mouheeb, Ryan Curatolo, Nicholas Bachalard
8.15pm Firebreak Stakes – Group 3 (TB) $130,000 (D) 1,600m
Winner Secret Ambition, Tadhg O’Shea, Satish Seemar
9.50pm Meydan Classic – Conditions (TB) $$50,000 (T) 1,400m
Winner Topper Bill, Richard Mullen, Satish Seemar
9.25pm Dubai Sprint – Listed Handicap (TB) $88,000 (T) 1,200m
Winner Man Of Promise, William Buick, Charlie Appleby
more from Janine di Giovanni
The Sand Castle
Director: Matty Brown
Stars: Nadine Labaki, Ziad Bakri, Zain Al Rafeea, Riman Al Rafeea
Rating: 2.5/5
Classification of skills
A worker is categorised as skilled by the MOHRE based on nine levels given in the International Standard Classification of Occupations (ISCO) issued by the International Labour Organisation.
A skilled worker would be someone at a professional level (levels 1 – 5) which includes managers, professionals, technicians and associate professionals, clerical support workers, and service and sales workers.
The worker must also have an attested educational certificate higher than secondary or an equivalent certification, and earn a monthly salary of at least Dh4,000.
More coverage from the Future Forum
Ten tax points to be aware of in 2026
1. Domestic VAT refund amendments: request your refund within five years
If a business does not apply for the refund on time, they lose their credit.
2. E-invoicing in the UAE
Businesses should continue preparing for the implementation of e-invoicing in the UAE, with 2026 a preparation and transition period ahead of phased mandatory adoption.
3. More tax audits
Tax authorities are increasingly using data already available across multiple filings to identify audit risks.
4. More beneficial VAT and excise tax penalty regime
Tax disputes are expected to become more frequent and more structured, with clearer administrative objection and appeal processes. The UAE has adopted a new penalty regime for VAT and excise disputes, which now mirrors the penalty regime for corporate tax.
5. Greater emphasis on statutory audit
There is a greater need for the accuracy of financial statements. The International Financial Reporting Standards standards need to be strictly adhered to and, as a result, the quality of the audits will need to increase.
6. Further transfer pricing enforcement
Transfer pricing enforcement, which refers to the practice of establishing prices for internal transactions between related entities, is expected to broaden in scope. The UAE will shortly open the possibility to negotiate advance pricing agreements, or essentially rulings for transfer pricing purposes.
7. Limited time periods for audits
Recent amendments also introduce a default five-year limitation period for tax audits and assessments, subject to specific statutory exceptions. While the standard audit and assessment period is five years, this may be extended to up to 15 years in cases involving fraud or tax evasion.
8. Pillar 2 implementation
Many multinational groups will begin to feel the practical effect of the Domestic Minimum Top-Up Tax (DMTT), the UAE's implementation of the OECD’s global minimum tax under Pillar 2. While the rules apply for financial years starting on or after January 1, 2025, it is 2026 that marks the transition to an operational phase.
9. Reduced compliance obligations for imported goods and services
Businesses that apply the reverse-charge mechanism for VAT purposes in the UAE may benefit from reduced compliance obligations.
10. Substance and CbC reporting focus
Tax authorities are expected to continue strengthening the enforcement of economic substance and Country-by-Country (CbC) reporting frameworks. In the UAE, these regimes are increasingly being used as risk-assessment tools, providing tax authorities with a comprehensive view of multinational groups’ global footprints and enabling them to assess whether profits are aligned with real economic activity.
Contributed by Thomas Vanhee and Hend Rashwan, Aurifer
Duminy's Test career in numbers
Tests 46; Runs 2,103; Best 166; Average 32.85; 100s 6; 50s 8; Wickets 42; Best 4-47
Benefits of first-time home buyers' scheme
- Priority access to new homes from participating developers
- Discounts on sales price of off-plan units
- Flexible payment plans from developers
- Mortgages with better interest rates, faster approval times and reduced fees
- DLD registration fee can be paid through banks or credit cards at zero interest rates
UAE currency: the story behind the money in your pockets
The Way It Was: My Life with Frank Sinatra by Eliot Weisman and Jennifer Valoppi
Hachette Books
TRAP
Starring: Josh Hartnett, Saleka Shyamalan, Ariel Donaghue
Director: M Night Shyamalan
Rating: 3/5
