Cement News tagged under: pozzolana

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TITAN acquires pozzolana quarry

31 January 2024, Published under Cement News

TITAN Cement International (TCI) has acquired concession rights in Vezirhan Pozzolana Quarry, in East Marmara, Turkey. The acquisition will expand the portfolio of low-carbon cementitious products available to its customers.     This reinforces TITAN's 2026 growth strategy, which focusses on doubling the volume of green cements and expediting the market launch of new green products and cementitious solutions. The current acquisition follows the one of a participation in Aegean Pe...

Fly ash and pozzolanas

18 January 2021, Published under Cement News

The drive for alternative raw materials has put the spotlight on fly ash and pozzolanas. However, their use in cement has been around for some time. This month Arthur Harrisson looks at their origin and performance in cement. Pumice rock A pozzolana is a material which, when mixed with a hydraulic cement, will react with the lime from the cement and water to produce cementitious hydration products of its own. The most familiar types of pozzolanic materials in common use are low-...

New supplementary cementitious materials

19 August 2019, Published under Cement News

The search for new supplementary cementitious materials (SCMs) is ongoing. A recent review of existing SCMs and the potential for new ones caught the eye of Arthur Harrisson and provided further potential for investigation. A disused slate quarry: a potential SCM? A recent review 1 of the availability of supplementary cementitious materials (SCMs) and the possibility for expanding the choice of those available examined the range of emerging SCM sources and also the means of tes...

Portland cement, lime and alkali-activated binders

15 May 2019, Published under Cement News

Following on from last month’s discussion regarding the production of alternatives to Portland cement clinker, Arthur Harrisson takes a closer look at alkali-activated binders. Fly ash needs to be activated to produce an effective binder In a recent article 1 about the production of alternatives to Portland cement clinker, in the discussion of the preferred options of Gartner and Sui 2 , mention was made of alkali-activated binders, which were considered worthy of a paper of th...

Pozzolana is the key

20 November 2017, Published under Cement News

East Africa is enjoying strong cement demand, driven by economic growth and a buoyant construction sector. But, given the high capital cost of establishing a cement plant there, how does a new player gain entry to the market? The answer may lie in pozzolana. Volcanoes hold the clue to making East African cement markets easier to enter The moderator is currently engaged as ‘owner’s representative’ for the establishment of a cement factory in east Africa. Economic growth is accele...