A brief history and review of geopolymer technology is presented with the aim of introducing the technology and the vast categories of materials that may be synthesized by alkali-activation of aluminosilicates. The fundamental chemical and structural characteristics of geopolymers derived from metakaolin, fly ash and slag are explored in terms of the effects of raw material selection on the properties of geopolymer composites. It is shown that the raw materials and processing conditions are critical in determining the setting behavior, workability and chemical and physical properties of geopolymeric products. The structural and chemical characteristics that are common to all geopolymeric materials are presented, as well as those that are determined by the specific interactions occurring in different systems, providing the ability for tailored design of geopolymers to specific applications in terms of both technical and commercial requirements.

Geopolymer technology: the current state of the art

http://yaghi.berkeley.edu/pdfPublications/04MOFs.pdf

Metal-organic frameworks: a new class of porous materials

Supplementary cementitious materials

This review is focused on describing state-of-the-art synthetic routes for the preparation of magnetic nanoparticles useful for biomedical applications. In addition to this topic, we have also described in some detail some of the possible applications of magnetic nanoparticles in the field of biomedicine with special emphasis on showing the benefits of using nanoparticles. Finally, we have addressed some relevant findings on the importance of having well-defined synthetic routes to produce materials not only with similar physical features but also with similar crystallochemical characteristics.

https://iopscience.iop.org/article/10.1088/0022-3727/36/13/202/pdf

The preparation of magnetic nanoparticles for applications in biomedicine

The preparation of magnetic nanoparticles for applications in biomedicine : Biomedical applications of magnetic nanoparticles

XRD, EDX and IR analysis of solid solutions between thaumasite and ettringite

Metaettringite, a decomposition product of ettringite

A compositional model based on available structural evidence is proposed for amorphous calcium silicate hydrogel. It is applicable to gels in the (Ca/Si),solid range 1.0 to 1.4 and is formulated to take account of dimeric silicate species in the solid. Its composition is represented by CaxH6−2xSi2O7·zCa(OH)2·nH2O where x and z are not independently obtainable; x+z, however, is evaluated from the Ca/Si ratio. The model is applied to representative solubility data; Ksp and free energies of formation for C-S-H's in this composition range are evaluated.

Eric E. Lachowski

Papers

XRD, EDX and IR analysis of solid solutions between thaumasite and ettringite

Metaettringite, a decomposition product of ettringite

Compositional Model for Calcium Silicate Hydrate (C-S-H) Gels, Their Solubilities, and Free Energies of Formation

Clinker mineral hydration at reduced relative humidities

Immobilization of cesium in alkaline activated fly ash matrix