Fire-induced compositional changes lead to strength loss and even failure in cement and concrete. Calcium silicate hydrate (C–S–H) gel, the main product of cement hydration, dehydrates at 25–200 °C, while temperatures of ...

Density Functional Theory was applied to obtain a refined IR and Raman theoretical vibrational spectra of the major silicate phases of Portland cement, i.e. dicalcium silicate (ß-C2S) and tricalcium silicate (C3S). We ...

Este Manual se ha desarrollado para dar soporte a los arquitectos, parejadores y project managers para la redacción e implantación de Plan de Gestión de Residuos de Construcción y Demolición y buenas prácticas gremiales, ...

Activated carbon mining waste influences the formation of hydrated phases, their saturation indexes and mineral stability fields during pozzolanic reactions. The behavior of these reactions is predicted in this study by ...

This experimental research analyzes the mechanical performance and durability of façade pieces based on Portland cement matrix and flax nonwovens as reinforcement. Two types of pozzolanic additions (silica fume and ...

The use of industrial waste as a cement addition often changes the composition and development of the hydrated phases and with them matrix performance and durability, in particular at later ages. The effect of the presence ...

Se realiza un estudio del proceso de carbonatación del cemento aluminoso en presencia de una concentración elevada de álcalis. En el presente trabajo se demuestra la formación, en las muestras estudiadas, de un compuesto ...

Se han estudiado los procesos de activación alcalinosulfáticos de una escoria granulada de alto horno española (Avilés, Ensidesa). Las disoluciones activantes utilizadas fueron: H2O desionizada (como disolución de referencia), ...

Raman scattering was discovered by Krisma and Raman in 1928. Until approximately 1986, the Raman literature was dominated by physical and structural investigations, with relatively few reports of Raman spectroscopy applied ...

Calcareous and siliceous CDW wastes from concrete and glass wastes when mixed in binary mixtures has been analyzed in this study. Fine CDW fractions (<5 mm) of different sorts are selected: siliceous waste (HsT), calcareous ...