Cement News tagged under: strength development

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Strength development of ternary cements

26 September 2022, Published under Cement News

Low-clinker ternary cements containing clinker, blastfurnace slag and calcined clay are becoming increasingly important in cement markets where decarbonisation is the key to sustainable construction. Central to the production of concrete for these construction projects is the strength development of ternary cements, which is the focus of a recent research project by VDZ. By Simone Elisabeth Schulze and Joerg Rickert, VDZ Technology GmbH, Germany. Figure 1: area of investigated cement ...

Influencers of strength

21 March 2022, Published under Cement News

Over the years several factors that influence the strength of cement have been determined. These include mineralogy, chemistry, microstructure and process.   Figure 1: central irregular alite growth with many inclusions surrounded by clearer alite growth The various influences on the strengths achieved by Portland cements has been the subject of a number of research projects in the laboratory as well as analyses of industrially-produced materials over the years. A useful method ...

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...

Early strength development

31 May 2017, Published under Cement News

This month Arthur Harrisson discusses early strength development in concrete, which is affected by many variables in practice. In the two-stage process, which includes a setting and a hardening phase, he observes the parts played by sulphates and C3A while acknowledging the importance of other factors such as the C3S content. Cement hydrates five hours after mixing Several studies of which factors influence early strength performance have been carried out under controlled condit...