scholarly journals Extraction and Determination of Residual Ester in Ester Hardened Sodium Silicate Sand

2018 ◽  
Vol 394 ◽  
pp. 022064
Author(s):  
Lingbo Tang
Keyword(s):  
Sodium Silicate

scholarly journals Interaction of Magnesia with Limestone-Metakaolin-Calcium Hydroxide Ternary Alkali-Activated Systems

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
A. Cwirzen ◽  
L. Metsäpelto ◽  
K. Habermehl-Cwirzen
Keyword(s):  
Sodium Hydroxide ◽  
Calcium Hydroxide ◽  
Sodium Silicate ◽  
Ternary Systems ◽  
Sodium Sulphate ◽  
Crystalline Phases ◽  
Amorphous Phases ◽  
Porous Microstructure ◽  
Alkali Activated

The effect of magnesia on ternary systems composed of limestone, metakaolin and calcium hydroxide, alkali activated with sodium silicate, sodium hydroxide, and sodium sulphate was studied by determination of the compressive strength, X-ray powder diffraction (XRD), thermogravimetry (TG), and scanning electron microscope (SEM). Pastes activated with sodium silicate and sodium sulphate showed strength regression caused by a formation of an unstable prone to cracking geopolymer gel. The presence of magnesia in sodium hydroxide-activated system hindered this trend by promoting a formation of more stable crystalline phases intermixed with brucide. In general, magnesia densified the binder matrix by promoting a formation of amorphous phases while sodium hydroxide produced the most porous microstructure containing high amount of crystalline phases.

A new organic-silica based nanocomposite prepared for spectrophotometric determination of uranyl ions

RSC Advances ◽  
2016 ◽  
Vol 6 (12) ◽  
pp. 9563-9570 ◽  
Author(s):  
A. A. Elabd ◽  
O. A. Elhefnawy ◽  
A. M. El Nahrawy
Keyword(s):  
Sodium Silicate ◽  
Spectrophotometric Determination ◽  
Uranyl Ion ◽  
Uranyl Ions ◽  
Silicate Nanocomposites ◽  
Organic Silica

A new organic-silica based nanocomposite has been prepared for uranyl ion (UO22+) determination based on the absorbance enhancement of tartrazine incorporated copper sodium silicate nanocomposites (T-CSS).

scholarly journals Reclaiming Ability of Spent Sands with Modified, Hydrated Sodium Silicate

2014 ◽  
Vol 14 (1) ◽  
pp. 41-44
Author(s):  
J. Kamińska ◽  
A. Kmita
Keyword(s):  
Sodium Silicate ◽  
Water Glass ◽  
Bending Strength ◽  
Colloidal Suspension ◽  
Strength Properties ◽  
Matrix Component ◽  
Na2o Content ◽  
Zinc Carbonate ◽  
Ignition Loss

Abstract The presented in the paper investigations were aimed at the determination of the reclaimed material (obtained in the dry mechanical reclamation process) addition influence on properties of moulding sands with hydrated sodium silicate modified by colloidal suspension of zinc oxide nanoparticles in propanol. Nanoparticles originated from the thermal decomposition of alkaline zinc carbonate, were used. The results of the reclamation of the spent moulding sand with hydrated sodium silicate performed in the AT-2 testing reclaimer are presented in the paper. Both, spent sands from the Floster S technology and from the technology with the modified water-glass were subjected to the reclamation processes. The following determinations of the reclaimed material were performed: pH reaction, acid demand, ignition loss and Na2O content. The obtained reclaim was used as a matrix component of moulding sands with water-glass in the Floster S technology, in which it constituted 60% and 50% of the sand matrix. The strength properties of the prepared moulding sands were determined (bending strength Rgu, tensile strength Rm u) after samples storing times: 1h, 2h, 4h and 24 hours.

The Determination of Sodium Silicate Composition Using ATR FT-IR

2010 ◽  
Vol 49 (14) ◽  
pp. 6287-6290 ◽  
Author(s):  
James S. Falcone ◽  
Jonathan L. Bass ◽  
Maria Angelella ◽  
Emily R. Schenk ◽  
Karen A. Brensinger
Keyword(s):  
Sodium Silicate ◽  
Ft Ir

scholarly journals MECHANICAL PROPERTIES BETON AGROPOLIMER ABU SEKAM PADI DENGAN AKTIVATOR SODIUM SILIKAT DAN SODIUM HIDROKSIDA

2019 ◽  
Vol 9 (2) ◽  
pp. 23-32
Author(s):  
Cut Yusnar ◽  
Ruhana Ruhana ◽  
Sulaiman YH
Keyword(s):  
Mechanical Properties ◽  
Sodium Hydroxide ◽  
Sodium Silicate ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Compressive Properties ◽  
Optimum Result ◽  
Pozzolanic Material ◽  
Concrete Testing

Rice Husk Ash usually used as pozzolanic material admixtures that have been used for Geopolimer concrete. This study report on the behavior on mechanical properties (compressive and flexural) of rice husk ash geopolimer concrete using activator sodium silicate and sodium hydroxide with variation comparison of sodium silicate to sodium hydroxide was 0,25; 0,1; and 1,25. Concrete testing included the determination of compressive and flexural properties.  It was shown that the behavior of compressive properties of comparison of sodium silicate to sodium hydroxide 1,0 was the optimum result and the behavior of flexure properties gotoptimum result on the comparison of sodium silicate and sodium hydroxide was 1,25.

Determination of thermodynamic and microscopic origins of the Soret effect in sodium silicate melts: Prediction of sign change of the Soret coefficient

2021 ◽  
Vol 154 (7) ◽  
pp. 074501
Author(s):  
Masahiro Shimizu ◽  
Tsubasa Fukuyo ◽  
Jun Matsuoka ◽  
Kento Nakashima ◽  
Kenzo Sato ◽  
...  
Keyword(s):  
Sodium Silicate ◽  
Soret Effect ◽  
Silicate Melts ◽  
Soret Coefficient ◽  
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