About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Characterization of Minerals, Metals and Materials 2022
|
Presentation Title |
L-28: Influence of the Sand Content on the Physical and Mechanical Properties of Metakaolin-based Geopolymer Mortars |
Author(s) |
Igor Klaus Rocha Andrade, Beatryz Cardoso Mendes, Leonardo G. Pedroti, Carlos Maurício Fontes Vieira , José Maria Franco de Carvalho |
On-Site Speaker (Planned) |
Leonardo G. Pedroti |
Abstract Scope |
Metakaolin is a naturally occurring calcined clay, rich in aluminosilicates, and for this reason, it is one of the most used precursors in the geopolymers' production. This work evaluates the influence of the sand content on the physical and mechanical properties of metakaolin based geopolymer mortars, using sodium hydroxide solution with a concentration of 10 mol/L, thermal curing at 50 ºC and solution/precursor ratio of 0.90 ± 0.08. The cylindrical and prismatic specimens were tested in flexural strength (1.6 MPa to 4.7 MPa), compressive strength (2.3 MPa to 7.4 MPa), bulk density (1.66 g/cm³ to 2.01 g/cm³), voids content (22.0% to 40.1%) and water absorption (12.3% to 30.7%). The addition of sand in the studied contents collaborated for the formation of a more compact and less porous composite, presenting better mechanical performances. |
Proceedings Inclusion? |
Planned: |
Keywords |
Aluminum, |