scholarly journals The Effect of Alkali Concentration and Sodium Silicate Modulus on the Properties of Alkali-Activated Slag Concrete

2018 ◽  
Vol 16 (7) ◽  
pp. 293-305 ◽  
Author(s):  
Hamed Taghvayi ◽  
Kiachehr Behfarnia ◽  
Mohammadbagher Khalili
Keyword(s):  
Sodium Silicate ◽  
Alkali 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 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

Effect of Fly Ash, MgO and Curing Solution on the Chemical Shrinkage of Alkali-Activated Slag Cement

2010 ◽  
Vol 168-170 ◽  
pp. 2008-2012 ◽  
Author(s):  
Yong Hao Fang ◽  
Ya Min Gu ◽  
Qiu Boa Kang
Keyword(s):  
Fly Ash ◽  
Ordinary Portland Cement ◽  
Alkali Concentration ◽  
Early Age ◽  
Chemical Shrinkage ◽  
Slag Cement ◽  
Alkali Activated Slag ◽  
Reduction Effect ◽  
Activated Slag ◽  
Alkali Activated

The chemical shrinkages of alkali-activated slag cement (AASC), and the effect of fly ash, MgO burnt at 900°C and the curing solutions were studied. The shrinkages were compared with that of ordinary portland cement (OPC). The results show that the chemical shrinkage of AASC is lower than that of OPC. Adding fly ash and light-burnt MgO reduced the early age chemical shrinkage, while the shrinkage-reduction effect decreased with the age. The alkality of the curing solution has significant effect on the hydration and shrinkage of AASC. The chemical shrinkage of AASC increased with the alkali concentration of the curing solution. The mechanisms of fly ash, MgO and curing solution on the shrinkage were discussed.

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 Effect of Stress–Strength Ratio on Creep Property of Sodium Silicate–Based Alkali-Activated Slag Concrete

2019 ◽  
Vol 9 (18) ◽  
pp. 3643 ◽  
Author(s):  
Xianyu Zhou ◽  
Ying Wang ◽  
Wenzhong Zheng ◽  
Pang Chen ◽  
Yusheng Zeng
Keyword(s):  
Sodium Silicate ◽  
Creep Property ◽  
Creep Model ◽  
Strength Ratio ◽  
Creep Properties ◽  
Alkali Activated Slag ◽  
Dependent Strain ◽  
Activated Slag ◽  
Stress Dependent ◽  
Alkali Activated

Alkali-activated materials have attracted increasing interest owing to their excellent properties and environmental protection. However, there have been few studies on their creep properties. The aim of this article is to investigate the effect of the stress–strength ratio on the creep property of sodium silicate–based alkali-activated slag (AAS) concrete. For this reason, five groups of AAS concrete with different stress–strength ratios (0.15, 0.3, 0.45, 0.6, and 0.75) were tested. The results indicate that the creep of AAS concrete has a convergent nonlinear stage and a non-convergent stage but not an obvious linear stage. The AAS concrete basically has a consistent creep coefficient and diverse specific creep under a stress–strength ratio of 0.15–0.6. The elasticity modulus of AAS is much smaller than that of ordinary Portland cement (OPC) concrete, which is the reason for the greater creep compared to that in OPC concrete, and the inaccuracy of the model prediction. By applying the actual elastic modulus, the models can predict the specific creep and stress-dependent strain of AAS concrete with a 0.3 stress–strength ratio, except for the B3 model. The secant modulus of AAS concrete decreases linearly with an increase in the stress–strength ratio. Finally, we propose an improved creep model for AAS concrete with a wide stress–strength ratio based on the GL2000 model.

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