Influence of steel slag on mechanical properties and durability of concrete

Preliminary investigation on the pozzolanic activity of superfine steel slag

“…Nevertheless, there are still some problems with the utilization of steel slag. Firstly, the activity of the cementitious composition in steel slag is much slower than that of Portland cement clinker because of its thermal history [10,11]. Secondly, the high amount of f-MgO and f-CaO content in steel slag leads to an undesirable volume change of steel slag cement [12,13].…”

Preparation and modeling of energy-saving building materials by using industrial solid waste

“…From Table 1, it can be seen that the chemical composition of SS is similar to that of PC, so the effect of SS on the bulk density of the sample is not apparent. In addition, the decreasing of the strength is probably due to two reasons: the early activity of SS is much lower than that of PC; SS decreases the early hydration rate of PC [15,27]. Thus, SS replacement reduces the hydration degree of the sample thereby decreases its strength property.…”

“…It was reported that the production of steel slag is over 70 million tons in recent years with the slag generation rate of about 0.08-0.15 ton per ton steel [14]. From the theoretical point of view, SS can be used to substitute partially as clinker for producing composite Portland cement [15][16][17]. In this paper, these two solid wastes both of FA and SS were used as the cement replacement to manufacture FC.…”

The difference among the effects of high-temperature curing on the early hydration properties of different cementitious systems

“…In the meanwhile, it is an efficient way to utilize the industrial residue. The early activity of mineral admixture is normally lower than that of cement, so replacing part of cement by mineral admixture tends to decrease the early strength of concrete [1][2][3]. However, some mineral admixtures can improve the workability of concrete or reduce the early hydration heat of binder [4][5][6].…”