R
Ruby Mejía de Gutiérrez
Researcher at University of Valle
Publications - 144
Citations - 5536
Ruby Mejía de Gutiérrez is an academic researcher from University of Valle. The author has contributed to research in topics: Portland cement & Compressive strength. The author has an hindex of 30, co-authored 136 publications receiving 3813 citations.
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Journal ArticleDOI
Evolution of binder structure in sodium silicate-activated slag-metakaolin blends
TL;DR: In this article, the structural evolution in pastes produced from alkali silicate-activated granulated blast furnace slag (GBFS)/metakaolin (MK) blends is assessed.
Journal ArticleDOI
Effect of binder content on the performance of alkali-activated slag concretes
Susan A. Bernal,Ruby Mejía de Gutiérrez,Alba L. Pedraza,John L. Provis,Erich D. Rodríguez,Silvio Delvasto +5 more
TL;DR: In this paper, the authors evaluated the mechanical and durability performance of concretes produced using alkali silicate-activated ground granulated blast furnace slag as sole binder.
Journal ArticleDOI
MgO content of slag controls phase evolution and structural changes induced by accelerated carbonation in alkali-activated binders
Susan A. Bernal,Susan A. Bernal,Susan A. Bernal,Rackel San Nicolas,Rupert J. Myers,Ruby Mejía de Gutiérrez,Francisca Puertas,Jannie S.J. van Deventer,John L. Provis,John L. Provis +9 more
TL;DR: In this paper, the structural development and carbonation resistance of three silicate-activated slags (AAS) with varying MgO contents (5%), hydrotalcite is identified as the main secondary product in addition to C-A-S-H.
Journal ArticleDOI
Effect of silicate modulus and metakaolin incorporation on the carbonation of alkali silicate-activated slags
TL;DR: In this paper, high-energy synchrotron X-ray diffractometry of uncarbonated paste samples was used to identify the main reaction products in alkali-activated GBFS/MK blends, and aluminosilicates with a zeolitic (gismondine) structure.
Journal ArticleDOI
Engineering and durability properties of concretes based on alkali-activated granulated blast furnace slag/metakaolin blends
TL;DR: The effects of activation conditions on the engineering properties of slag/metakaolin blends are examined in this article, showing that at high activator concentration, compressive strength at early age is enhanced by the inclusion of metakaolin in the binder.