In this research article engineering properties of solely ground granulated blast furnace (GGBS) slag geopolymers have been investigated at varying proportions of alkali activators. Combination of sodium hydroxide (SH) and sodium meta silicate (SMS) powder has been used as alkali activators. Consistency, setting time and compressive strength have been determined at different concentration of SH and ratio of SMS/SH for GGBS geopolymer. Maximum compressive strength of 87.76 MPa has been achieved at 2 molar concentration of SH and SMS/SH = 2.0 after 28 days of curing at ambient temperature. The consistency of mix attaining maximum compressive strength is 27.5%. The initial and final setting time of 55 and 105 minutes has been observed. The soundness of geopolymer paste is within permissible limits. The micro-structural analysis of GGBS and geopolymer paste has been performed by XRD, FTIR, FESEM and EDAX. The co-existence of calcium silicate hydrate gel and geopolymeric gel may be responsible for achieving high compressive strength at low concentration of activators under ambient temperature curing.

中文翻译：

---

磨碎的高炉矿渣的温和化学活化作用制备的地聚合物的工程性能

在这篇研究文章中，已经研究了在不同比例的碱活化剂的作用下，单磨粒状高炉矿渣地质聚合物的工程性能。氢氧化钠（SH）和偏硅酸钠（SMS）粉末的组合已用作碱活化剂。已经确定了GGBS地质聚合物在不同SH浓度和SMS / SH比下的稠度，凝固时间和抗压强度。在环境温度下固化28天后，在2摩尔浓度的SH和SMS / SH = 2.0时，已达到87.76 MPa的最大抗压强度。达到最大抗压强度的混合物的稠度为27.5％。观察到初始和最终凝固时间分别为55分钟和105分钟。地质聚合物浆料的稳固性在允许的范围内。GGBS和地质聚合物糊的微结构分析已通过XRD，FTIR，FESEM和EDAX进行。硅酸钙水合物凝胶和地质聚合物凝胶的共存可能是在室温固化下在低浓度的活化剂下获得高压缩强度的原因。