权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

From common clays to Geopolymer binders - crystallographic and building material technology-based investigations

从普通粘土到地质聚合物粘合剂 - 基于晶体学和建筑材料技术的研究

基本信息

批准号：
325967999
负责人：
Professor Dr.-Ing. Frank Dehn
金额：
--
依托单位：
Kompetenzzentrum für Materialfeuchte (CMM)
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2016
资助国家：
德国
起止时间：
2015-12-31 至 2022-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/325967999?language=en
关键词：
common clays Geopolymer binders crystallographic

项目摘要

Up to date actual scientific knowledge about the thermal and alkaline activation of common clays is restricted to a phenomenological description, despite common clays being the most heterogeneous, natural raw materials in terms of their phase content, structure and particle morphology. However, due to their chemical and mineralogical composition as well as for the future availability they seem to be particularly suitable for an alkaline activation, and thus, for the development of Geopolymer binders. Currently, the relation between material properties and process parameters for common clays has not been investigated with respect to the resulting properties of mortars and concretes based on Geopolymer binders. One approach to gain a better understanding of these phenomena is the combination of investigations of model clay minerals and real common clays, which will be the main focus of this research project. The focus of this study will be on the investigation of the occurring reactions when using calcined common clays as an alkaline activation source material for the production of Geopolymer binders dependent on phase content and crystal structure of the clay minerals. Most attention will be paid on the interaction between metaclay minerals and thermally not activated clay minerals in order to predict the raw material behaviour of the naturally occurring clay mixtures on a performance basis. In addition, fundamental knowledge about the activation and reactivity of metaclay can be derived from these investigations which could be also considered in cementitious mortars and concretes where calcined clays are used.Furthermore, Geopolymer binders and mortars are initially in the center of interest, due to the complexity of these systems. By the applicants approach strong and fundamental statements about texture, porosity/permeability, surface structure, alkalinity and selected mechanical properties of Geopolymer binders and mortars made of calcined common clays, can be systematically derived for the first time generated by means of natural and engineering science methods. The project objectives shall be achieved by two interacting working packages, which deal with mineralogical and crystallographical characteristic values, process parameters and construction material technological properties of Geopolymer binders and mortars.

迄今为止，关于普通粘土的热活化和碱活化的实际科学知识仅限于现象学描述，尽管普通粘土在其相含量、结构和颗粒形态方面是最不均匀的天然原材料。然而，由于它们的化学和矿物组成以及未来的可用性，它们似乎特别适合碱性活化，因此，用于开发地质聚合物粘合剂。目前，普通粘土的材料性能和工艺参数之间的关系还没有被调查的砂浆和混凝土的基础上地质聚合物粘合剂的性能。将模型粘土矿物与真实的普通粘土相结合是深入理解这些现象的途径之一，这将是本研究项目的主要重点。本研究的重点将是调查发生的反应时，使用煅烧的普通粘土作为碱性活化源材料的地质聚合物粘合剂的生产依赖于相含量和晶体结构的粘土矿物。最关注的是变质粘土矿物和热不活化粘土矿物之间的相互作用，以预测天然存在的粘土混合物的性能基础上的原材料行为。此外，从这些研究中可以获得有关变粘土的活化和反应性的基本知识，这些研究也可以用于使用煅烧粘土的水泥砂浆和混凝土。此外，由于这些系统的复杂性，地质聚合物粘合剂和砂浆最初是感兴趣的中心。通过申请人的方法，关于由煅烧的普通粘土制成的地质聚合物粘合剂和砂浆的纹理、孔隙率/渗透率、表面结构、碱度和选定的机械性能的强有力的和基本的陈述可以首次通过自然科学和工程科学方法系统地导出。项目目标应通过两个相互作用的工作包来实现，这两个工作包涉及矿物学和晶体学特征值、工艺参数以及地质聚合物粘合剂和砂浆的建筑材料技术性能。