Lightweight Concrete Additives | High-Performance Foaming Agents for Cellular Concrete
jar últimos ya je̲ya, Hormigón ligero espumado xi ganado popularidad nu'bya yá propiedades aislamiento térmico ne facilidad producción. However, nuna ar klase ar hormigón pe̲ts'i ar inconveniente ke ar altamente inestable jar ár estado fresco ne exhibe mextha contracción secado nu'bu̲ ar endurece. jar nuna ar he̲'mi, desarrollamos 'nar mezcla hormigón espumado mejorado nä'ä to soportar nuya fenómenos adversos. ya resultados experimentales nuna ar mezcla demostraron da ár estructura ar poros xí fuertemente influenciada ir nge ár densidad seca, nä'ä ar determina principalmente ya contenido ar espuma. ir, ar crucial reducir ar densidad seca nuna hñei jar 'mui mejorar ár nzäm'bu ja yá 'befi frescos ne endurecidos.
ar óptima nthe ar su̲mento, agregado espumado, ne ar dehe bí logrado ir nge ar za ar concentración 'nar he̲'mi cementicio suplementario típico (SCM) such as fly ash, molido granulado escoria horno alto, ne humo sílice. The SCMs are incorporated in a varying range of proportions from 30 to 70 percent by volume. In addition to these SCMs, a specific foaming agent called GENFIL is added for the purpose of producing stable and homogenous cellular lightweight concrete.
The foamed concrete was produced using a wet method by utilizing static inline mixers with continuous on board density monitors to ensure the proper blending of the base and foamed aggregates. The resulting concrete was found to have a high water retention, a relatively low viscosity, and a strong thixotropic behavior, and it had a higher compressive strength at early ages than the control mix with cement alone. ir otra parte, the flexural strength was found to increase significantly with the inclusion of POFA, nu'bya ar formación ar gel adicional C — S — H ir nge ar reacción pozolánica nuna ar SCM.