Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Geopolymeric concrete based on industrial wastes
In this paper the results of the synthesis of geopolymer-based building materials made with a kaolinitic residue are reported. The preparation of hardened materials takes place through a calcination step followed by a polycondensation step. The calcination step was carried out at temperatures ranging from 500 deg C to 750 deg C and times ranging between two and six hours. Optimum calcination conditions were found by evaluating the reactivity of the calcined products by differential scanning calorimetry. The polycondensation step was carried out at temperatures ranging from 25 deg C to 85 deg C by reaction with sodium or potassium silicate. The compositions of olycondensation systems stoichiometric for the synthesis of polysialate, polysialatesiloxo and polysialatedisiloxo geopolymers were tested, but only the first two were successful. An original quantitative analytical method was employed to determine the amounts of reacted silicate and water after polycondensation. The mortars obtained were tested for unconfined compressive strength, apparent density, porosity, surface area and pore size distribution. The results show that it is possible to produce good quality building materials starting from a kaolinitic residue.
Geopolymeric concrete based on industrial wastes
In this paper the results of the synthesis of geopolymer-based building materials made with a kaolinitic residue are reported. The preparation of hardened materials takes place through a calcination step followed by a polycondensation step. The calcination step was carried out at temperatures ranging from 500 deg C to 750 deg C and times ranging between two and six hours. Optimum calcination conditions were found by evaluating the reactivity of the calcined products by differential scanning calorimetry. The polycondensation step was carried out at temperatures ranging from 25 deg C to 85 deg C by reaction with sodium or potassium silicate. The compositions of olycondensation systems stoichiometric for the synthesis of polysialate, polysialatesiloxo and polysialatedisiloxo geopolymers were tested, but only the first two were successful. An original quantitative analytical method was employed to determine the amounts of reacted silicate and water after polycondensation. The mortars obtained were tested for unconfined compressive strength, apparent density, porosity, surface area and pore size distribution. The results show that it is possible to produce good quality building materials starting from a kaolinitic residue.
Geopolymeric concrete based on industrial wastes
Geopolymerbeton auf der Basis von industriellen Abfallprodukten
Colangelo, F. (Autor:in) / Cioffi, R. (Autor:in) / Santoro, L. (Autor:in)
2009
6 Seiten, 7 Bilder, 2 Tabellen, 23 Quellen
Aufsatz (Konferenz)
Englisch
Geopolymeric concrete based on industrial wastes
| British Library Conference Proceedings | 2009
Drying shrinkage of geopolymeric recycled aggregate concrete
| Elsevier | 2023
Utilisation of waste material in geopolymeric concrete
| Online Contents | 2011
Experimental Study of the Geopolymeric Recycled Aggregate Concrete
| Online Contents | 2016