A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Shrinkage mechanisms of alkali-activated slag
Abstract In this work, the physical and chemical changes of alkali-activated slag (AAS) after a prolonged drying treatment under various relative humidity (RH) conditions were studied. The results show that the shrinkage kinetics of AAS is strongly dependent on the RH, but irrespective of the moisture loss. At high RH, AAS exhibits a pronounced viscous characteristic, which is likely due to the rearrangement and reorganization of calcium-alumina-silicate-hydrate (C-A-S-H). Meantime, micropore closure, silicate polymerization, and new interlayer formation were observed during microstructure rearrangement, indicating a strong interaction between adjacent C-A-S-H particles. The large shrinkage in AAS may be attributed to the structural incorporation of alkali cations in C-A-S-H, which reduces the stacking regularity of C-A-S-H layers and makes the C-A-S-H easier to collapse and redistribute upon drying.
Shrinkage mechanisms of alkali-activated slag
Abstract In this work, the physical and chemical changes of alkali-activated slag (AAS) after a prolonged drying treatment under various relative humidity (RH) conditions were studied. The results show that the shrinkage kinetics of AAS is strongly dependent on the RH, but irrespective of the moisture loss. At high RH, AAS exhibits a pronounced viscous characteristic, which is likely due to the rearrangement and reorganization of calcium-alumina-silicate-hydrate (C-A-S-H). Meantime, micropore closure, silicate polymerization, and new interlayer formation were observed during microstructure rearrangement, indicating a strong interaction between adjacent C-A-S-H particles. The large shrinkage in AAS may be attributed to the structural incorporation of alkali cations in C-A-S-H, which reduces the stacking regularity of C-A-S-H layers and makes the C-A-S-H easier to collapse and redistribute upon drying.
Shrinkage mechanisms of alkali-activated slag
Ye, Hailong (author) / Radlińska, Aleksandra (author)
Cement and Concrete Research ; 88 ; 126-135
2016-07-06
10 pages
Article (Journal)
Electronic Resource
English
Shrinkage mechanisms of alkali-activated slag
| British Library Online Contents | 2016
Shrinkage mechanisms of alkali-activated slag
| Elsevier | 2016
Shrinkage mechanisms of alkali-activated slag
| Online Contents | 2016
Shrinkage mitigation strategies in alkali-activated slag
| British Library Online Contents | 2017
Shrinkage mitigation strategies in alkali-activated slag
| Elsevier | 2017