Effect of mineral additives on the setting of blended cement by the maturity method

Compressive strength and shrinkage of mortar containing various amounts of mineral additions

“…7 shows an activity of pozzolan at early age due to important water consumption by the hydration. This result is in conformity with the results of setting time where a high rate of this mineral addition generates an acceleration of the setting [12]. After 7 days, the autogenous shrinkage of natural pozzolan mortars is reduced and becomes lower than that of ordinary cement.…”

Mechanical, hydration, and durability modifications provided to mortar made with crushed sand and blended cements

“…Ordinary Portland cement C1 presents the lowest decrease in the final setting time compared to blended cements C2 and C3. These results are in good agreement with those obtained by others researchers [29] on cement containing fines additions. The analysis of the setting results of various mixtures shows that it is possible to establish a relationship between the values of the setting time for mortars made with natural and CS.…”

Properties of early-age concrete relevant to cracking in massive concrete

“…Previous data of activation energy for type I cement showed a wide range of values (26 -47 kJ/mol) [79][80][81][82]. The addition of GGBS increases the apparent activation energy [23,[79][80][81], while the addition of FA reduces the activation energy [23,83].…”