Global Cement News

We report on development from Japan this week with the creation of a low-alkali cement for use at nuclear waste sites. Professor Katsuyoshi Kondo, Joining and Welding Research Institute at Osaka University, and Nippon Steel & Sumikin Cement Co have prepared a process that mixes silica dioxide extracted from rice chaff with cement.

As press reports explain, the team has developed technology to extract highly purified silica with numerous holes measuring 5 – 7nm in diameter by washing rice chaff with organic acid and burning it. The surface area of the silica extracted from rice chaff is 50,000 - 90,000 times larger than that contained in existing cements, enhancing the reaction between silica and calcium hydroxide and thus lowering the alkaline level.

The stated application for this new research is for underground nuclear waste disposal sites. At these locations extremely high durability is required for long periods of time, potentially for tens of thousands of years.

Normally the concern with alkali-silica reactivity is between alkali in the cement and a sensitive aggregate over a shorter time period. Under high moisture and high alkali content the resulting concrete can crack leading to reduced-performance. However, the issue with nuclear waste storage is that it has to be stored underground and for long periods of time. This means that the cement can potentially react with groundwater producing calcium hydroxide making the groundwater alkaline. This can then react with aggregates in the clay and bedrock at the storage site. Clearly this is undesirable for a long-term storage site of hazardous materials.

In the wake of the Fukushima disaster, this kind of development will be of high interest in Japan. It will also have applications around the world wherever radioactive waste sites are built.

One example of the demanding construction conditions facing builders in these environments is the original sarcophagus used to encase the Chernobyl Nuclear Power Plant reactor in 1986. Building it used more than 7,000t of steel and 410,000m³ of concrete. Erected in a hurry under horrendous conditions, the container was never sealed properly and the structure was only given a design lifespan of 20 to 30 years. Currently a replacement, New Safe Confinement, is being built at a projected cost of Euro2bn for completion in 2017. The structure will be up to 100m tall and 165m long with a lifetime of at least 100 years.

One of the issues raised in the documentary film 'Into Eternity' is what exactly should one daub on the entrance to a long-term waste dump? Given that the Onkalo spent nuclear fuel repository in Finland is planning to stay sealed for 100,000 years, how should its planners communicate to people, who potentially rediscover it in the future, that they should stay away? One suggestion quoted here is to put Edvard Munch's The Scream on the door. However, we have difficulty today in reading and interpreting Ancient Egyptian writing and art from 5000 years ago. What this means for any of our descendants unlucky enough to stumble upon a buried nuclear waste site is anyone's guess. At the very least though using a low-alkali cement that will last as long as possible is a good start.

Nigeria: Dangote Cement has appointed two new Regional Chief Executive Officers (RCEOs). Arvind Pathak has been appointed as the new regional Chief Executive Officer of Nigeria and Vivek Chawla will serve as the new Regional CEO for West and Central Africa. Chawla was appointed on 17 August 2015.

Chawla has over 30 years of experience working in the cement industry. Previous to working for Dangote he was the President of Hindalco Industries, part of the Aditya Birla Group. Chawla also worked as Chief Executive Officer, East Region of ACC Limited.

The past few weeks have been notable for the high number of cement plant projects announced. Aside from further Dangote developments in Africa, (which doesn't seem to be able to go a week without announcing some 'milestone' or another,) a growing number have been in 'new' markets, especially in Central Asia.

The list from the past month or so is impressive. In east Asia Myanmar's Ait Thit Man group has announced that it will double its capacity from 5000t/day to 10,000t/day. In the south, Shree Cement wants to build another new facility in India. In west Asia, Pakistan, a country that has not seen significant cement capacity investment in the past few years, will be getting a new plant in Salt Range courtesy of China's Yantai Yantai Baoqiao Jinhong.

Turkmenistan looks set to build a 1Mt/yr plant as part of a massive government industrial stimulus package. China's Jilong Group wants to build a 0.8Mt/yr plant in Issyk Kul, Krygyzstan. Another Chinese producer, Xinjiang Tianshan will be bringing a 1.2Mt/yr plant to Georgia. Even today (Wednesday 30 September 2015), we have heard that there will be further Chinese investment, this time by Shangfeng Cement. It has announced financing for two new plants: in Tajikistan and Uzbekistan. Both are set to be 1.2Mt/yr facilities.

Two trends are clear from this. 1. Land-locked Central Asian and other relatively undeveloped countries elsewhere in Asia are finally coming to the cement plant party. 2. It is the Chinese producers that have the upper hand in these markets. This is based partly on cultural, political, geographical and historic links between China and these former Soviet nations. It is partly due to the lower 'face value' cost of Chinese equipment compared to European manufacturers. (The efficiency with which the lower cost equipment is installed and its running costs remain potential pitfalls, according to the Europeans.) Finally, it has a lot to do with the collapse of domestic demand for cement plants in China itself, where the economy continues to teeter on the brink.

The steady rise of the Central Asian cement sector and the increasing international activities of Chinese cement plant manufacturers have been 'on the cards' for years. To date, they have been trends waiting to happen, but 2015 looks to be the year that these factors finally combined and translated into large numbers of projects.

For Central Asian countries the prospects that come with a larger and more dynamic cement industry should enable greater independence, accelerated infrastructure development and economic growth. For the Chinese, setting up cement plants in Central Asia is a natural expansion of its multi-billion dollar activities in the African cement sector, where Sinoma recently signed a massive deal with Dangote Cement. As noted previously in this column, Africa can't continue to add capacity at the current rate forever.

For European manufacturers of cement plants, the other side of this story is not as pretty. AGAB, the large plant manufacturing group of Germany's Verband Deutscher Maschinen- und Anlagenbau (VDMA), has recently released its Status Report 2014/2015, which reports on activities from 2014. AGAB members' cement plant order volume fell by an incredible 63% in 2014 to Euro198m. This is a fall from Euro529m in 2013 and six times lower than the Euro1.2bn peak of 2008. Some of this is domestically driven but the vast majority of it is export markets.

The same report also shows that, for construction of all types of large industrial plants, Chinese producers have increased their global market share from 5% in 2006 to 17% in 2014. Over the same period, Western European producers have seen their share fall from 45% to 33%, although an increase in overall project volumes mean that these producers received roughly the same value of orders in each year. US suppliers, although not a major consideration for the cement sector, saw their share of orders fall from 22% to 20%. Japan also lost a third of its stake over the same period, falling from 15% of sales in 2006 to just 10% in 2014.

While AGAB's report anticipates increased competition from Chinese producers, it is by no means all 'doom and gloom' for Europe's traditional large plant manufacturers. It highlights the fact that Russia, the largest single market for heavy plant in 2014 and a significant consumer of European-made cement equipment, has decided against Chinese equipment in some cases. It also highlighted that the weakness of the Euro helps exports from Germany and the rest of the Eurozone and suggests that the sector should look to increase its service and consultation offering in order to build on its existing reputation for high quality equipment.

Ireland: CRH has announced that Mark Towe, currently President and Chief Executive of Oldcastle, will assume the new role of Chairman, CRH Americas. He will work with the Group Chief Executive to support performance and excellence programmes across the group. The appointment is effective from 1 January 2016. Towe will continue as an Executive Director on the Board of CRH.

India: HeidelbergCement India has reported that Daniel R Fritz has tendered his resignation from the position of Director of the company with effect from close of business on 29 September 2015.