Cement News tagged under: concrete

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GCCA replies to Guardians' 'Concrete Week' launch article

27 February 2019, Published under Cement News

The Global Cement and Concrete Association (GCCA) set out a formal reply to the Guardian newspaper's article which was posted on Monday 26 February 2019, stating that cement and concrete are part of the sustainable future. The GCCA commented, "The Guardian’s 'Concrete Week' is a great opportunity to look at a range of important issues associated with concrete, and it is right to examine some of the important challenges the world faces. However, inadequately covering the significant work a...

Cementos Argos

31 January 2019, Published under Cement News

Cementos Argos has supplied 22,978m 3 of concrete, equivalent to around 400 mixer trucks, to the La Zurza wastewater treatment plant in Santo Domingo in the Dominican Republic. The plant, which will be the largest in the Caribbean, will have a capacity of 27m gallons/second of treated water being returned to the river flow. The project will not only benefit up to 500,000 inhabitants from 37 sectors of the National District and the province of Santo Domingo, it will also aid the Ozama and...

Creating a voice

04 December 2018, Published under Cement News

The Global Cement and Concrete Association (GCCA) met for its first AGM and symposium at the Corinthia Hotel, London, UK, on Friday, 23 November 2018. With leading CEOs, sustainability, logistics, strategists and co-processing managers, as well as cement and concrete associations in attendance, delegates were informed of an agreed work programme for the GCCA going forward. In addition, the GCCA explained how it will create a voice for the cement and concrete industry, promoting cement as 'th...

Strength predictions

03 October 2018, Published under Cement News

A prediction of strength in concrete can be made through a range of methods and with numerous variables. To facilitate this, Arthur Harrisson examines the key factors that control strength development in concrete. Figure 1: cement 28-day strengths Various methods have been developed to predict the strength that a concrete may reach with a particular combination of cement, supplementary cementitious materials (SCMs), aggregate, admixture and even water. The variables are numerous...

Graphene may have commercial use as concrete additive

14 September 2018, Published under Cement News

Zenyatta Centures Ltd's research with the University of Toronto into cement strength when using small quantities of graphene from Albany Graphite has led to some startling results. Using just 0.02 per cent of the graphene product when combined with cement saw compressive strength of cured cement paste increase by 39 per cent, reports Junior Mining Network. Professor Deman Panesar, University of Toronto Department of Civil & Mineral Engineering, said, "This encouraging preliminary result ...

Self-healing concrete

10 September 2018, Published under Cement News

The formation of cracks in concrete is a common occurrence and in many cases is not regarded as a major issue. However, in some circumstances they may pose a threat to a concrete structure if its purpose is to prevent the movement of water or if there is a risk of the ingress of deleterious materials. Research is underway in a number of locations to investigate ways of encouraging healing of the cracks without major intervention. Figure 1: microcracks in concrete (cracks are up to 0.0...

The future of concrete

10 October 2017, Published under Cement News

In the second report from the international symposium “The Future of Cement’, which took place in Paris in June, we look at recent developments in the world of concrete in terms of production methods, emissions, standards, sustainability and 3D printing. The symposium examined the use of concrete in modern-day cities In June this year, ICR partnered an international symposium looking at the research underway in the field of concrete production. The event, held at the UNESCO head...

Lafarge Africa and COREN develop Nigeria's first concrete manual

11 August 2017, Published under Cement News

Lafarge Africa Plc is set to partner Council for the Regulation of Engineering in Nigeria (COREN) in the research and development of Nigeria’s first concrete mix design manual. The concrete mix design manual provides step-by-step guidance on the selection and proportioning of concrete ingredients such as cement, sand and aggregates, and then the mixing and placing of concrete. The manual came after exhaustive research and testing with concrete materials in different parts of the country....

Cemex delivers concrete for Riga's Bulk Terminal

18 May 2017, Published under Cement News

Cemex has supplied more than 3500m 3 of concrete to the Riga Bulk Terminal, a state-of-the-art marine terminal being built for the Freeport of Riga, Latvia’s port authority. Located in Kundzinsala, in Riga’s northern district, the terminal is a key part of a global and regional cargo supply chain and passenger traffic network in the Baltic Sea region. Cemex in Latvia supplied the concrete for the construction of the base plate, walls, and coverings for the new loading point of the Riga Bul...

A case for low-lime cement

22 February 2017, Published under Cement News

The cement and concrete industry is re-inventing itself through new and efficient processes to not only reverse its environmental impact, but to make improvements to the whole supply chain of the building materials industry. This sustainability drive has seen the emergence of low-clinker cements, including cements that have a reduced lime content. By Dr Vahit Atakan, Dr Sada Sahu and Dr Nick DeCristofaro, Solidia Technologies, USA. Pavers ready for curing: Solidia Concrete ® cures wi...