Improving concrete performance with delayed PCE addition Premium
Among modern admixtures, polycarboxylate ether superplasticisers play a vital role in producing high-strength, durable and highly workable concrete. However, the effectiveness o...
Cement Chemistry
30 posts · Page 1 of 3
Cement type and chloride penetration Premium
The durability of concrete is affected by a range of factors and it is recommended that these are taken into account when the type of cement needed for a project is specified. A...
Accelerated carbonation of concrete to sequester CO2 Premium
This month Arthur Harrisson looks at the phenomenon of accelerated carbonation, its effects in concrete and carbonation methods. Figure 1: hydrated concrete – optical microscopy...
Maintaining quality with emission limits Premium
The trend towards more sustainable cement production and decarbonisation has resulted in increased emissions control. While this has led to challenges in terms of maintaining qu...
Influencers of strength Premium
Over the years several factors that influence the strength of cement have been determined. These include mineralogy, chemistry, microstructure and process. Figure 1: central irr...
Limestone specifications Premium
When asked to review the suitability of limestone deposits for cement manufacture, Dr Michael Clark makes a range of important assessments such as what other materials would nee...
Producing boron cement Premium
The creation of low-energy belite clinker is a specific area of research that aims to reduce CO 2 emissions from the cement manufacturing process. Boron minerals, of which Turke...
Belite size distribution Premium
Belite size is affected by several factors ranging from raw materials, the length of the burning zone, the fuels used in the production process as well as the conditions in the ...
Fly ash and pozzolanas Premium
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 ...
Process, mineralogy and cement quality Premium
This month Arthur Harrisson looks at the relationship between temperature differences in the clinker manufacturing process, the composition of clinker produced and the quality o...