Influence of the activator concentration of sodium silicate on the thermal properties of alkali-activated slag pastes

2016 ◽  
Vol 102 ◽  
pp. 811-820 ◽  
Author(s):  
Alaa M. Rashad ◽  
Sayieda R. Zeedan ◽  
Ahmed A. Hassan
Keyword(s):  
Thermal Properties ◽  
Sodium Silicate ◽  
Activator Concentration ◽  
Alkali Activated Slag ◽  
Activated Slag ◽  
Alkali Activated

scholarly journals Alkali-activated slag cements produced with a blended sodium carbonate/sodium silicate activator

2016 ◽  
Vol 28 (4) ◽  
pp. 262-273 ◽  
Author(s):  
Susan A. Bernal ◽  
Rackel San Nicolas ◽  
Jannie S. J. van Deventer ◽  
John L. Provis
Keyword(s):  
Sodium Silicate ◽  
Sodium Carbonate ◽  
Alkali Activated Slag ◽  
Activated Slag ◽  
Alkali Activated

scholarly journals Thermal Properties of Alkali Activated Slag Plaster for Wooden Structures

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Andrius Kielė ◽  
Danutė Vaičiukynienė ◽  
Gintautas Tamošaitis ◽  
Rėda Bistrickaitė
Keyword(s):  
Thermal Properties ◽  
Alkali Activated Slag ◽  
Activated Slag ◽  
Wooden Structures ◽  
Alkali Activated

scholarly journals Influence of sodium silicate powder silica modulus for mechanical and chemical properties of dry-mix alkali-activated slag mortar

2020 ◽  
Vol 233 ◽  
pp. 117354 ◽  
Author(s):  
Tero Luukkonen ◽  
Harisankar Sreenivasan ◽  
Zahra Abdollahnejad ◽  
Juho Yliniemi ◽  
Anu Kantola ◽  
...  
Keyword(s):  
Sodium Silicate ◽  
Chemical Properties ◽  
Alkali Activated Slag ◽  
Activated Slag ◽  
Alkali Activated ◽  
And Chemical Properties

scholarly journals Alkali-activated slag cements produced with a blended sodium carbonate/sodium silicate activator

2015 ◽  
pp. 1-12 ◽  
Author(s):  
Susan A. Bernal ◽  
Rackel San Nicolas ◽  
John L. Provis ◽  
Jannie S. J. van Deventer
Keyword(s):  
Sodium Silicate ◽  
Sodium Carbonate ◽  
Alkali Activated Slag ◽  
Activated Slag ◽  
Alkali Activated

Sodium silicate-based alkali-activated slag mortars

2000 ◽  
Vol 30 (9) ◽  
pp. 1375-1379 ◽  
Author(s):  
A.R Brough ◽  
M Holloway ◽  
J Sykes ◽  
A Atkinson
Keyword(s):  
Sodium Silicate ◽  
Alkali Activated Slag ◽  
Activated Slag ◽  
Alkali Activated

scholarly journals Understanding the Role of Metakaolin towards Mitigating the Shrinkage Behavior of Alkali-Activated Slag

Materials ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 6962
Author(s):  
Bo Fu ◽  
Zhenyun Cheng ◽  
Jingyun Han ◽  
Ning Li
Keyword(s):  
Compressive Strength ◽  
Setting Time ◽  
Drying Shrinkage ◽  
Activator Concentration ◽  
Reaction Products ◽  
Alkali Activated Slag ◽  
Activated Slag ◽  
Alkali Activated ◽  
Shrinkage Behavior

This research investigates the mechanism of metakaolin for mitigating the autogenous and drying shrinkages of alkali-activated slag with regard to the activator parameters, including concentration and modulus. The results indicate that the incorporation of metakaolin can decrease the initial viscosity and setting time. Increasing activator concentration can promote the reaction process and shorten the setting time. An increase in the metakaolin content induces a decrease in compressive strength due to reduced formation of reaction products. However, increasing activator dosage and modulus can improve the compressive strength of alkali-activated slag containing 30% metakaolin. The inclusion of metakaolin can mitigate the autogenous and drying shrinkage of alkali-activated slag by coarsening the pore structure. On the other hand, increases in activator concentration and modulus result in an increase in magnitude of the autogenous and drying shrinkage of alkali-activated slag containing metakaolin. The influence of the activator modulus on the shrinkage behavior of alkali-activated slag-metakaolin binary system should be further investigated.

scholarly journals The influence of different parameters on the hydration process of binders based on alkali activated slag

2005 ◽  
Vol 70 (1) ◽  
pp. 97-105 ◽  
Author(s):  
Darko Krzan ◽  
Miroslav Komljenovic ◽  
Branislav Zivanovic
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Water Glass ◽  
Sodium Metasilicate ◽  
Hydration Process ◽  
Activator Concentration ◽  
Alkali Activated Slag ◽  
Activated Slag ◽  
Alkali Activated

The influence of certain types of activators (water glass Na2O.nSiO2 and sodium-metasilicate Na2SiO3.5H2O) on the hydration process of alkali activated slag was investigated in this study. The influence of activator concentration, specific surface area of the slag and the modulus n of the water glass (mass ratio between SiO2 and Na2O) on the kinetics of the hydration process i.e., the change of compressive strength were also investigated. Poorly crystallized low base calcium silicate hydrate C-S-H (I) is the main hydration product of alkali activated slag regardless of the activator used. This is the reason for the rapid increase in the strength of alkali activated slag and also of the very high strength values. The strength growth rate and strength values were significantly higher when sodium-metasilicate was used as the activator than when water glass was used. The specific surface area of the slag and the activator concentration are parameters which have a closely connected influence on strength and their action is cumulative. The modulus n of water glass does not have an explicit influence on the strength of alkali activated slag.

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