Version 1
: Received: 13 June 2019 / Approved: 18 June 2019 / Online: 18 June 2019 (08:27:14 CEST)
How to cite:
Costa, C.; Fernandes, S.; Velosa, A.; Rocha, F. Development of Geopolymers Formulations Based on Low-Grade Kaolins as a Potential Construction Material. Preprints2019, 2019060170. https://doi.org/10.20944/preprints201906.0170.v1
Costa, C.; Fernandes, S.; Velosa, A.; Rocha, F. Development of Geopolymers Formulations Based on Low-Grade Kaolins as a Potential Construction Material. Preprints 2019, 2019060170. https://doi.org/10.20944/preprints201906.0170.v1
Costa, C.; Fernandes, S.; Velosa, A.; Rocha, F. Development of Geopolymers Formulations Based on Low-Grade Kaolins as a Potential Construction Material. Preprints2019, 2019060170. https://doi.org/10.20944/preprints201906.0170.v1
APA Style
Costa, C., Fernandes, S., Velosa, A., & Rocha, F. (2019). Development of Geopolymers Formulations Based on Low-Grade Kaolins as a Potential Construction Material. Preprints. https://doi.org/10.20944/preprints201906.0170.v1
Chicago/Turabian Style
Costa, C., Ana Velosa and Fernando Rocha. 2019 "Development of Geopolymers Formulations Based on Low-Grade Kaolins as a Potential Construction Material" Preprints. https://doi.org/10.20944/preprints201906.0170.v1
Abstract
Sustainability, particularly in construction materials, has been a subject of growing interest. Civil construction is one of the industries where more materials are consumed, which leads to high energy consumption and CO2 emissions. The production of cement, especially clinker is largely responsible for these problems. As a solution, new materials emerge, which do not require much energy for their production, which are the alkaline cements, specifically the geopolymers. Geopolymers are inorganic polymers obtained by the alkaline activation of aluminosilicate precursors. In the present study geopolymers were developed with low grade kaolin (as a precursor) from a Portuguese company. The development of these geopolymers will be, due to their properties, a good solution for rehabilitation of earth buildings, especially in adobe. The development of these geopolymers is also a contribution to the sustainability of kaolin exploitations as it opens new markets for the low grade kaolins, presently not easily commercialized. As mechanical strength of adobe materials ranges in literature from 0.6 to 8.3 MPa, the values obtained for the developed geopolymers (between ~2 to 10 MPa) can be considered as totally adequate.
Keywords
geopolymers; kaolins; diatomite; applications
Subject
Environmental and Earth Sciences, Geochemistry and Petrology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
