The Occurrence of Hydrated Alumina in Certain Soil Colloidal Materials

1930 ◽  
Vol B11 (2001) ◽  
pp. 192-193
Author(s):  
I. A. Denison
Keyword(s):  
Hydrated Alumina ◽  
Colloidal Materials

Special Binding for Refractory Concretes

2019 ◽  
Vol 17 (17) ◽  
pp. 11-16
Author(s):  
Elena Valentina Stoian ◽  
Dan Nicolae Ungureanu ◽  
Florin Toma ◽  
Alexandru Gabriel Colţa ◽  
Daniel Anculescu ◽  
...  
Keyword(s):  
Silica Fume ◽  
Ph Value ◽  
Concrete Structures ◽  
Hydrated Alumina ◽  
Binding System ◽  
Hydraulic Binder ◽  
Aluminous Cement ◽  
Mechanical Strengths ◽  
Condensed Silica Fume ◽  
New System

AbstractThe paper shows data related to coexistence of various binding systems, which could be present during the hardening of special concretes. It is taken into account the Ultra Low Aluminous Cement Concretes additivated with different materials (phosphates and mineral ultra dispersed powders - Condensed Silica Fume, Hydrated Alumina etc). In correlation to the pH-value, these substances can favour the forming of new binding systems besides the hydraulic binder (which is not important in this case). The new system is the coagulation binding form. The coagulation binding system has a very important role in the advanced compactness and in the increasing mechanical strengths of concrete structures.

scholarly journals Selective switching of multiple plexcitons in colloidal materials: directing the energy flow at the nanoscale

Nanoscale ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 6005-6015
Author(s):  
Nicola Peruffo ◽  
Gabriel Gil ◽  
Stefano Corni ◽  
Fabrizio Mancin ◽  
Elisabetta Collini
Keyword(s):  
Energy Flow ◽  
Colloidal Particle ◽  
Colloidal Materials

Two sets of plexcitonic resonances are selectively activated and connected by a relaxation cascade in colloidal particle-porphyrin nanosystems.

Some peculiarities in melting aluminomagnesia glass using hydrated alumina

1958 ◽  
Vol 15 (8) ◽  
pp. 440-443
Author(s):  
I. A. Yatsunov ◽  
M. D. Velenko
Keyword(s):  
Hydrated Alumina

ADSORPTION OF COLLOIDAL MATERIALS ON POLYMER SURFACES

1983 ◽  
Vol 4 (3) ◽  
pp. 275-290
Author(s):  
Brian G. Sherry ◽  
Hirotsugu K. Yasuda ◽  
Magda El-Nokaly ◽  
Stig E. Friberg
Keyword(s):  
Polymer Surfaces ◽  
Colloidal Materials

Effect of Seedings on the Microstructure of Hydrated Alumina

2012 ◽  
Vol 554-556 ◽  
pp. 709-713
Author(s):  
Yan Hong Liu ◽  
Hong Wen Ma ◽  
Mei Tang Liu
Keyword(s):  
Electron Microscopy ◽  
Particle Size ◽  
Decisive Role ◽  
Mechanism Study ◽  
Hydrated Alumina ◽  
Crystal Nucleus ◽  
X Ray ◽  
Intrinsic Mechanism ◽  
Scanning Electron

The morphology and particle size of boehmite play a decisive role on the application of alumina that derived from it. In this paper, we employed pseudoboehmite that produced from Al2 (SO4)3•18H2O and NH3•H2O at 70 °C, pH 7.5 as precursor to synthesize boehmite, and utilized different seeding when preparing pseudoboehmite and boehmite. To identify the influence of seeding on the microstructure of pseudoboehmite and boehmite, the products were characterized by X-ray powder diffraction (XRD), field-emission scanning electron microscopy (FE-SEM) and BET. The results indicate that the pseudoboehmite seeding has a significant influence on the morphology and particle size of pseudoboehmite to which we should pay high attention. However, the boehmite seeding does not play the role of crystal nucleus as expected. The further intrinsic mechanism study is ongoing.

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