H2020Individual fellowship2021–2024

NEASCMs · Nano-engineered aluminosilicate cementitious materials

Horizon 2020 — Marie Skłodowska-Curie Actions

Duration
2021-08-02 → 2024-02-29
EU contribution
€224,934
Participants
1
Scheme
MSCA-IF

Lines connect the coordinator with its partners.

Results in brief

Nano-engineered aluminosilicate cementitious materials

The project has achieved most of its objectives and milestones for the period, with relatively minor deviations. The objective of this Fellowship is to train Dr. Pengkun Hou through a research project entitled as “Nano-Engineered Aluminosilicate Cementitious Materials” (NEASCMs) with the aim of preparing low-carbon cementitious binders for sustainable construction. During the program, the researcher revealed the regulation of the aluminosilicate cementitious materials with nanosilica particles, the negative surface charge of which contributes to the blocking of the dissolution/precipitation of the hydrates of aluminate phase, but enhances the silicate phase reaction, laying foundation for the nanoengineering of cementitious binders. Moreover, the preparation of supersulfated cement, the limestone-calcined clay cement with nanoengineering has been conducted, both of which exhibits benefits on the acceleration of the hydration and hardening performances of the binders. Through all the fundamental and engineering research work, techniques for exploring the use of aluminosilicate mineral, from industrial waste or inert clay-type mineral can be designed, contributing to the reduction of waste, as well as CO2 emission.

Data: CORDIS, © European Union

Project objective

The project “Nano-Engineered Aluminosilicate Cementitious Materials” (NEASCMs) is designed for training the fellow by preparing low-carbon cementitious binders for sustainable construction and solidification/stabilization, S/S. Effects of nanoengineering on the regulation of the hydration and hardening processes of aluminosilicate-based cementitious binders for sustainable constructions, as well as its roles on the solidification/stabilization of aluminosilicate-based grains/wastes for environmental protection will be explored. Nanoengineering will be utilized for preparing low-carbon cementitious materials containing of different sources of Aluminosilicates, Carbonates and Sulfates (ACS) binders for sustainable construction. The hydration kinetics and performance of ACS binders will be tailored through the optimization of a combination of cement and minor ions (such as Mg, Fe, Cl). The mechanical properties and durability will be systematically studied for evaluation of performance. Secondly, effects of nanoengineering on S/S of typical aluminosilicate-based grains/wastes for environmental protection will be investigated. Solidification/stabilization using nanoengineered aluminosilicates will be studied and modelled thermodynamically. Cases such as solidification/stabilization of soil/construction wastes, mining wastes will be researched, and the environment features, such as the solidification capability, the leachability of the wastes will be investigated through mechanical testing and sequential extraction procedures (SEP), etc. Life-cycle assessment (LCA) will be used for a comprehensive understanding of the sustainability of the production and utilization of the new binders, baselined against Portland cement by taking the transportation, production, usage, and recycling stages into consideration. This project will shed a light on the preparation of low-carbon cementitious binders featuring great intellectual merits and broad engineering implications.

Original text from CORDIS.

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Data: CORDIS, © European Union