Cement News tagged under: strength development

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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...