Given the worldwide abundant resources of low purity kaolin and urban waste glass, their use to produce alkali activated cements seem to be a promising area in the search for alternative sustainable cements with environmental advantages over Portland cement. Under this perspective, the properties of silicate activated low purity metakaolin (MK) and flat soda lime silicate waste glass (WG) at MK/WG mass ratios of 100/0, 85/15 and 70/30 were investigated. The chemical composition of the pastes was varied in terms of modulus (Ms=0.8-1.2) SiO₂/Na₂O of the activating solution with additions of 12 and 16 wt.% Na₂O. Cubic samples dry cured at 20°C were used to follow the compressive strength from 1 to 90 days, which reached from 17 to 56 MPa; the highest values were attained by samples activated with Ms= 0.8- 1 and 12%Na₂O. The products of the reactions were evaluated by X-ray diffraction, infrared spectroscopy, scanning electronic microscopy and nuclear magnetic resonance. The microstructures included unreacted MK, WG and N-A-S-H, while the incorporation of WG favored the formation of a more complex reaction product similar to a (N,C)-A-S-H type gel.

考虑到世界范围内低纯度高岭土和城市废玻璃的丰富资源，在寻找替代硅酸盐水泥具有环境优势的可持续水泥方面，将其用于生产碱活化水泥似乎是一个有前途的领域。从这个角度出发，研究了MK / WG质量比为100 / 0、85 / 15和70/30的硅酸盐活化的低纯度偏高岭土（MK）和纯碱石灰硅酸盐废玻璃（WG）的性能。糊剂的化学组成根据活化溶液的模量（Ms ＝ 0.8-1.2）SiO ₂ / Na ₂ O而变化，其中添加了12和16重量％的Na _2。O.在20°C下干燥固化的立方样品用于跟踪1到90天的压缩强度，达到17到56 MPa。Ms = 0.8-1和12％Na ₂ O活化的样品达到最高值。反应产物通过X射线衍射，红外光谱，扫描电子显微镜和核磁共振进行评估。微观结构包括未反应的MK，WG和NASH，而WG的加入有利于形成更复杂的反应产物，类似于（N，C）-ASH型凝胶。