The use of alkali activated waste binders in enhancing the mechanical properties and durability of soft alluvial soils

Sargent, Paul; Hughes, Paul; Rouainia, Mohamed; White, Maggie

doi:10.1016/j.enggeo.2012.10.013

Cited by 97 publications

(33 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the strengths achieved were lower and more favourable than those recorded by Sargent et al (2013) for a 506 GGBS-NaOH-Na 2 SiO 3 stabilised artificial alluvium. 507 508…”

mentioning

confidence: 71%

“…Samples stabilised with CEM-I survived the 12 279 cycle testing period with a gradual reduction in volume, whereas 10% lime samples only survived 3 cycles 280 exhibiting larger volumetric losses. According to Sargent et al (2013), most non-activated geopolymers fail after 281 the first cycle. However, the 5 and 10% GGBS samples survived 2 and 3 cycles respectively.…”

mentioning

confidence: 99%

See 1 more Smart Citation

A new low carbon cementitious binder for stabilising weak ground conditions through deep soil mixing

Sargent¹,

Hughes

Rouainia

2016

Soils and Foundations

View full text Add to dashboard Cite

Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details.

show abstract

“…However, the strengths achieved were lower and more favourable than those recorded by Sargent et al (2013) for a 506 GGBS-NaOH-Na 2 SiO 3 stabilised artificial alluvium. 507 508…”

mentioning

confidence: 71%

mentioning

confidence: 99%

A new low carbon cementitious binder for stabilising weak ground conditions through deep soil mixing

Sargent¹,

Hughes

Rouainia

2016

Soils and Foundations

View full text Add to dashboard Cite

show abstract

“…Most available research and industrial applications on geopolymers are limited to steamed or dry heat-cured concrete [12], whereas for ground improvement, elevated heat is not practically possible. Therefore, soil stabilization by geopolymers has only been investigated at ambient temperature [2], [13], [14]. In fact, low temperature maintains slow rate of geopolymerisation and strength gain in stabilized soils.…”

Section: Introductionmentioning

confidence: 99%

Stabilisation of Clay with Fly-Ash Geopolymer Incorporating GGBFS

Abdullah¹,

Shahin²,

Sarker³

2017

Proceedings of the 2nd World Congress on Civil, Structural, and Environmental Engineering

View full text Add to dashboard Cite

-Low water/binder ratio and higher activator content can help to accelerate the setting and strength development of fly-ash geopolymers cured at ambient condition. This study aims to achieve clay stabilization with fly-ash based geopolymer incorporating ground granulated blast-furnace slag (GGBFS), to enhance soil strength performance at ambient temperature. Laboratory experiments were performed on clay samples stabilized with both slag and fly-ash geopolymer and ordinary Portland cement (OPC), including the soil plasticity, compaction and unconfined compressive strength. The investigation was expanded to include un-activated fly-ash/slag clay samples used as control mixtures. The results indicated that introducing GGBFS to class (F) fly-ash based geopolymer assists, when synthesised in certain concentrations, in achieving a setting time and compressive strength comparable to OPC stabilised clay.

show abstract

“…After the activation the chemo-physical evolution is characterized by formation of cementitious compounds [18,19]. The reaction mechanism is promoted by the alkaline solution, which enables the dissolution of the aluminosilicate source (precursor) and the subsequent precipitation of gel phases, which condense in a three-dimensional aluminosilicate network [20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Behaviour of Soil Improved by Alkali Activated Binders

et al. 2017

View full text Add to dashboard Cite

Abstract:The use of alkali activated binders to improve engineering properties of clayey soils is a novel solution, and an alternative to the widely diffused improvement based on the use of traditional binders such as lime and cement. In the paper the alkaline activation of two fly ashes, by-products of coal combustion thermoelectric power plants, has been presented. These alkali activated binders have been mixed with a clayey soil for evaluating the improvement of its mechanical behaviour. One-dimensional compression tests on raw and treated samples have been performed with reference to the effects induced by type of binder, binder contents and curing time. The experimental evidences at volume scale of the treated samples have been directly linked to the chemo-physical evolution of the binders, investigated over curing time by means of X Ray Diffraction. Test results showed a high reactivity of the alkali activated binders promoting the formation of new mineralogical phases responsible for the mechanical improvement of treated soil. The efficiency of alkali activated binders soil treatment has been highlighted by comparison with mechanical performance induced by Portland cement.

show abstract

The use of alkali activated waste binders in enhancing the mechanical properties and durability of soft alluvial soils

Cited by 97 publications

References 19 publications

A new low carbon cementitious binder for stabilising weak ground conditions through deep soil mixing

A new low carbon cementitious binder for stabilising weak ground conditions through deep soil mixing

Stabilisation of Clay with Fly-Ash Geopolymer Incorporating GGBFS

Mechanical Behaviour of Soil Improved by Alkali Activated Binders

Contact Info

Product

Resources

About