Evolution of binder structure in sodium silicate-activated slag-metakaolin blends

2011 ◽  
Vol 33 (1) ◽  
pp. 46-54 ◽  
Author(s):  
Susan A. Bernal ◽  
John L. Provis ◽  
Volker Rose ◽  
Ruby Mejía de Gutierrez
Keyword(s):  
Sodium Silicate ◽  
Activated Slag ◽  
Binder Structure

Chemical and physical effects of high-volume limestone powder on sodium silicate-activated slag cement (AASC)

2021 ◽  
Vol 292 ◽  
pp. 123257
Author(s):  
Xiaohong Zhu ◽  
Xiaojuan Kang ◽  
Jiaxin Deng ◽  
Kai Yang ◽  
Shouheng Jiang ◽  
...  
Keyword(s):  
Sodium Silicate ◽  
High Volume ◽  
Limestone Powder ◽  
Slag Cement ◽  
Physical Effects ◽  
Activated Slag

Sodium silicate activated slag-fly ash binders: Part I - Processing, microstructure, and mechanical properties

2018 ◽  
Vol 101 (6) ◽  
pp. 2228-2244 ◽  
Author(s):  
Kaushik Sankar ◽  
Peter Stynoski ◽  
Ghassan K. Al-Chaar ◽  
Waltraud M. Kriven
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Sodium Silicate ◽  
Microstructure And Mechanical Properties ◽  
Activated Slag

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 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

SODIUM SILICATE ACTIVATED SLAG-FLY ASH CEMENT

2014 ◽  
Vol 1 (1) ◽  
Author(s):  
Jan Pieter Vermeulen ◽  
Natalie Lloyd
Keyword(s):  
Blast Furnace ◽  
Fly Ash ◽  
Silica Fume ◽  
Sodium Silicate ◽  
Blast Furnace Slag ◽  
High Strength ◽  
Chemical Balance ◽  
Aluminum Hydrate ◽  
Activated Slag ◽  
Furnace Slag

This research examines an alternative binder, Alkali Activated Cement (AAC), examining the fresh and hardened mechanical properties of twelve AAC mortar mixes with varying mixture proportions of blast-furnace slag, fly ash, sodium silicate (the alkali activator), and additional water. In addition to the Slag-Fly Ash mortars, nine mixtures with blast-furnace slag, silica fume, aluminum hydrate, sodium silicate, and water were tested. For all mortars, the compressive strength was exponentially related to the water/activator-solids ratio. Mortar strengths at 28 days ranged from 5 MPa to 20 MPa. Increasing the slag to binder-solids ratio from 0.1 to 0.2 increased the strength with water to binder ratios from 0.2 to 0.4. However, rapid or almost instantaneous setting times were observed for a slag to binder-solids ratio of 0.2. The research concluded that using a carefully chosen mix design can prevent quick setting while still achieving high strength and acceptable workability. It is suggested the CaO to binder-solids ratio remain below 0.07; a sodium silicate to binder solids ratio of around 0.25 is optimal; a water to binder-solids ratio should be around 0.3. When replacing fly ash, a Si/Al ratio above 2 is recommended. This research concluded that other solids (Silica Fume and Aluminum Hydrate) could replace Slag and/or Fly Ash if the overall chemical balance of the system is maintained.

Acid-resistant cements for geothermal wells: sodium silicate activated slag/fly ash blends

2005 ◽  
Vol 17 (2) ◽  
pp. 65-75 ◽  
Author(s):  
T. Sugama ◽  
L. E. Brothers ◽  
T. R. Van de Putte
Keyword(s):  
Fly Ash ◽  
Sodium Silicate ◽  
Geothermal Wells ◽  
Activated Slag

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

scholarly journals Autogenous Deformation of Alkali-Activated Blast Furnace Slag Concrete Subjected to Variable Curing Temperatures

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Katalin Orosz ◽  
Abeer Humad ◽  
Hans Hedlund ◽  
Andrzej Cwirzen
Keyword(s):  
Blast Furnace ◽  
Diffraction Analysis ◽  
Sodium Silicate ◽  
Blast Furnace Slag ◽  
Curing Temperature ◽  
X Ray Diffraction ◽  
X Ray ◽  
Activated Slag ◽  
Furnace Slag ◽  
Alkali Activated

Deformations of alkali-activated slag concrete (AASC) with high MgO and Al2O3 content, subjected to variable curing temperature were studied. Sodium silicate and sodium carbonate were used as alkali activators. The obtained results showed development of deformations consisting of both shrinkage and expansion. Shrinkage appeared not to be affected by the activator type, while the expansion developed after the cooling down phase in stabilized isothermal conditions and did not stop within the duration of the tests. X-ray diffraction analysis performed shortly after the cooling down phase indicated the formation of crystalline hydrotalcite, which was associated with the observed expansion. A mixture with a higher amount of sodium silicate showed less expansion, likely due to the accelerated hydration and geopolymerization leading to the increased stiffness of the binder matrix.

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