Abstract：
Ternary alkali-activated binder was prepared by blast furnace slag (GGBS), recycled powder (RP) and waste glass powder (WGP) using simplex centroid design method. By measuring the fluidity, setting time, drying shrinkage and mechanical property of specimen, the complementary effect of GGBS, RP and WGP was discussed. The reaction mechanism and microstructure were explored by X-ray diffraction and scanning electron microscopy. The results reveal that the addition of RP could significantly reduce the fluidity and setting time of paste, while WGP can obviously improve the rheological property and play a retarding role. The workability of paste can be effectively regulated by mixing RP and WGP together. Whether added alone or in combination, RP and WGP can effectively improve the shrinkage performance. In the ternary system, GGBS can be rapidly activated and form a skeleton structure. The fine RP particles can play a good role in filling the structure, and the pozzolanic reaction of WGP gradually occurs, which makes the microstructure more compact. The incorporation of GGBS, RP and WGP can promote the growth of hydration products, improve the density of microstructure, and form a certain complementary effect.
摘要：
以高炉矿渣(GGBS)为原料制备了三元碱活化粘结剂,回收粉末(RP)和废玻璃粉(WGP)采用单纯形质心设计方法。通过测量流动性，设置时间,试样的干燥收缩率和力学性能，GGBS的互补效应，讨论了RP和WGP。通过X射线衍射和扫描电子显微镜研究了反应机理和微观结构。结果表明，RP的加入能显著降低浆料的流动性和凝固时间，而WGP可以明显改善流变性能并起到缓凝作用。通过将RP和WGP混合在一起可以有效地调节浆料的可加工性。无论是单独添加还是组合添加，RP和WGP可以有效地改善收缩性能。在三元体系中，GGBS可以被快速激活并形成骨架结构。细小的RP颗粒可以起到很好的填充结构的作用，WGP的火山灰反应逐渐发生，这使得微观结构更紧凑。GGBS的合并，RP和WGP可以促进水化产物的生长，提高微观结构的密度，形成一定的互补效应。
