Compressive strength of mortar containing natural pozzolan under various curing temperature

Influence of curing conditions on the mechanical properties and durability of cement mortars

“…The different temperature [4], and especially the different relative humidity [5] present in the environment, may cause a different microstructure [6] and, as a consequence, different service properties, such as compressive strength [7] and the diffusion coefficient of chlorides [8] in concrete.…”

Calorimetric study of geopolymer binders based on natural pozzolan

“…It is assumed that the rate constant K is an inverse function of t 50 , so that the ratios of t 50 values determined at different temperatures can be used instead of K to calculate E a [30,33,35]. So, plotting Table 5 shows the calculated apparent activation energy of each of This is a preprint of an article published in Journal of Thermal Analysis and Calorimetry.…”

“…According to the literature [19,33,[36][37][38][39][40][41][42][43], results of apparent activation energy obtained for different kinds of Portland, blended, and alkali-activated cements are shown in Table 6. Comparison of the results shown in Table 6 with the calculated activation energies of the geopolymeric binders based on natural pozzolan given in Table 5 shows that the activation energies of alkali-activated binders are lower than those of Portland and blended cements.…”

“…Mechanical and calorimetric approaches have been used for the experimental determination of E a [31,33].…”

Effect of Scoria on Various Specific Aspects of Lightweight Concrete

“…Several researchers have investigated the effects of scorias as replacements for cement, namely with respect to the mortar toughness, cement fraction (Al-Swaidani and Aliyan 2015;Bondar 2015;Lotfy et al 2015;Ghrici et al 2007;Rabehi et al 2014), the fabrication of granulate forms for lightweight concretes (Mouli and Khelafi 2008), and thermal activation (Ezziane et al 2007). Most studies have shown that scorias are economically sound and ecologically friendly building materials (Vlček et al 2014).…”