This paper illustrates the application of waste glass powder as part of the binder in slag–fly ash systems activated by NaOH and NaOH/Na2CO3 activators. To evaluate the reaction kinetics, reaction products, mechanical properties, and durability performance of glass powder modified alkali activated slag–fly ash systems, calorimetry test, X-ray diffraction, FTIR, strength test, drying shrinkage tests, and carbonation test were conducted. From the isothermal calorimeter results, glass powder shows a higher reactivity compared to fly ash but still lower than slag. The reaction products of glass power modified samples exhibit an enhancement of polymerization degree of Si–O–T, observed in FTIR. As a consequence, higher drying shrinkage exists in glass modified mortars. The mechanical performance of different samples is mostly controlled by the Ca/Si of dry mixtures and activator type. After the slag–fly ash binder system was modified by the waste glass, a significant enhancement of resistance to carbonation was identified, especially for NaOH/Na2CO3 activated mortars, which show an increase of 300% on the carbonation resistance ability compared to the reference sample. The Na/(Si + Al) ratio of dry mixtures exhibits a positive correlation with carbonation resistance.

中文翻译：

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废玻璃作为碱活化矿渣粉煤灰砂浆的粘合剂

本文阐述了废玻璃粉作为粘合剂的一部分在 NaOH 和 NaOH/Na2CO3 活化剂活化的矿渣-粉煤灰系统中的应用。为了评价玻璃粉改性碱活化矿渣-粉煤灰体系的反应动力学、反应产物、力学性能和耐久性能，进行了量热试验、X射线衍射、FTIR、强度试验、干燥收缩试验和碳化试验。从等温量热仪的结果来看，与粉煤灰相比，玻璃粉表现出更高的反应性，但仍低于矿渣。在 FTIR 中观察到，玻璃粉改性样品的反应产物表现出 Si-O-T 聚合度的增强。因此，玻璃改性砂浆存在较高的干燥收缩率。不同样品的机械性能主要受干混合物的 Ca/Si 和活化剂类型的控制。用废玻璃改性矿渣-粉煤灰粘合剂体系后，发现其抗碳化能力显着增强，尤其是NaOH/Na2CO3活性砂浆，与参考样品相比，其抗碳化能力提高了300% . 干燥混合物的 Na/(Si + Al) 比率与抗碳化性呈正相关。