Waste glass has the potential to be a sustainable alkali-activated material, but the low activity is not conducive to the development of strength. This study aimed to improve the compressive strength of ground granulated blast furnace slag-glass powder (GGBS-GP) paste by replacing GP with pretreated glass powder (PGP). The results indicate that the pretreatment of GP by the alkaline solution can depolymerize the surface structure and promote its dissolution during the hydration process of GGBS-GP paste. Hence, compared to GP, PGP has a higher reactivity to react with GGBS and it is favorable for the formation and the growth of chain length of C-A-S-H gel. Compared with GGBS-GP paste, GGBS-PGP paste can increase the amount of C-A-S-H gel by 51%. Correspondingly, the compressive strength of GGBS-GP paste can be significantly improved through the partial or all substitution of GP by PGP, and its 28 d compressive strength can be increased by 92.5%. At last, the calculated results confirm that the incorporation of PGP can decrease the cost and increase the sustainability of the GGBS-GP system, which provides the precondition for the wide application of PGP as a new cementitious material.

废玻璃具有成为可持续碱活化材料的潜力，但活性低不利于强度的发展。本研究旨在通过用预处理玻璃粉（PGP）代替GP来提高磨碎的高炉矿渣玻璃粉（GGBS-GP）浆料的抗压强度。结果表明，碱性溶液预处理GP可以解聚表面结构并促进其溶解。GGBS-GP浆料的水合过程。因此，与GP相比，PGP与GGBS的反应活性更高，有利于CASH凝胶的形成和链长的增长。与GGBS-GP糊剂相比，GGBS-PGP糊剂可增加51%的CASH凝胶用量。相应地，通过PGP部分或全部替代GP，可以显着提高GGBS-GP浆料的抗压强度，其28天抗压强度可提高92.5%。最后，计算结果证实PGP的掺入可以降低成本，提高GGBS-GP体系的可持续性，为PGP作为新型胶凝材料的广泛应用提供了前提条件。