Feasibility Study of Loess Stabilization with Fly Ash–Based Geopolymer

Liu, Zhen; Cai, C.S.; Liu, Fengyin; Fan, Fenghong

doi:10.1061/(asce)mt.1943-5533.0001490

Cited by 97 publications

(79 citation statements)

References 37 publications

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“…Liu et al [4] conducted experimental study using fly ash-based Alkali-activated binder for the loess soil stabilization. In this study, the investigators used a Class F fly ash as the raw material for the synthesis of AAB with two types of alkaline activators (i.e., potassium hydroxide and sodium hydroxide).…”

Section: Previous Studies On Soil Treated With Alkali-activated Bindermentioning

confidence: 99%

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Using Alkali-Activated Binders to Improve UAE Dune Sand

Arab¹,

Junaid²,

Omar³

et al. 2019

World Congress on Civil, Structural, and Environmental Engineering

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Soil improvement is a technique that improves the soil engineering properties. Several chemical and mechanical techniques have been developed over the last decades to alter or improve poor soil conditions. Many of these chemical techniques use either cement or lime. These traditional techniques have proven efficiency and durability over many years of use despite environmental concerns. Alkali-activated binders (AABs) have shown potential for low energy, low cost and high strength alternative to these traditional cementitious materials. A preliminary study was conducted on the feasibility of using alkali activated mixture of fly ash and Groundgranulated blast-furnace slag (GGBFS) to stabilize local dune-sands. Several micro-and macro-characterization techniques are used to examine the suitability of these binders to improve these local soils. Two different precursors are employed as activators in this investigation namely sodium silicate solution (Na2SiO3) and sodium hydroxide (NaOH). The factors studied for the geopolymerization process were Na2SiO3/NaOH ratio, total ratio of activator solids by sand weight, and finally ratio of fly ash to GGBFS. The tested specimens were cured temperature of 45 degree Celsius for 24 hours to replicate UAE environmental condition. A maximum strength of 3.68 MPa was attained after 14 days of curing for mixture with a ratio of Na2SiO3/NaOH equal to 1 and 40%:60% of fly ash to GGBFS. The total binder to soil ratio for this mixture was 15% by weight.

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Section: Previous Studies On Soil Treated With Alkali-activated Bindermentioning

confidence: 99%

“…One such challenge is the dependency of the properties of these binders on the pre-cursor source and the activation system. Several studies on the mechanical behaviour of heat cured AAM are available in the literature [2][3][4][5][6][7][8][9][10][11][12]. However, ambient cured AAM is preferable especially for soil improvement techniques.…”

Section: Introductionmentioning

confidence: 99%

Using Alkali-Activated Binders to Improve UAE Dune Sand

Arab¹,

Junaid²,

Omar³

et al. 2019

World Congress on Civil, Structural, and Environmental Engineering

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“…In recent decades, the petroleum‐based materials are widely used in the fields of automobile, consumption, construction, and so on . However, coupled with the increase in environmental awareness, the development of novel and green materials is attracting more and more attention, including using the industry by‐products or eco‐friendly materials to develop new materials, such as the wood plastic composites (WPCs) . Due to low cost, good processability, and excellent tenacity, high‐density polyethylene (HDPE)/wood fiber composites were extensively applied.…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3] However, coupled with the increase in environmental awareness, the development of novel and green materials is attracting more and more attention, including using the industry by-products or eco-friendly materials to develop new materials, such as the wood plastic composites (WPCs). [4][5][6] Due to low cost, good processability, and excellent tenacity, high-density polyethylene (HDPE)/wood fiber composites were extensively applied. However, the deficiency of enough rigidness and low heat deflection temperature and inferior toughness are preventing the composites from further application.…”

Section: Introductionmentioning

confidence: 99%

Impact of lithium chloride on the performance of wood fiber reinforced polyamide 6/high‐density polyethylene blend composites

Fang

Chen

et al. 2019

Polymer Composites

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Wood fiber reinforced polyamide 6 (PA6) and high‐density polyethylene (HDPE) blend composites were prepared via hot pressing. The PA6 was modified by lithium chloride (LiCl) for reducing the melting point. Crystallization analysis exhibited the decrease of the melting point (220°C to none) and the processing temperature (240°C to 200°C) of PA6. Thus, undesired discoloration and degradation were improved. LiCl was in favor of the interfacial compatibility among PA6, HDPE, and wood fiber. Also the LiCl could enhance the mechanical properties of the final products. The maximum flexural strength can reach up to 100.4 MPa. Besides, both maleic anhydride grafted high‐density polyethylene and wood fiber had positive effects on the mechanical performance.

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“…Geopolymers are chemically classified as an aluminosilicate in which silica (Si) and aluminium (Al) are lined each other by means of oxygen, for example: (-Si-O-Al-O)n or (-Si-O-Al-O-Si-O)n ( Fig. 1) [3,4].The simplified chemical formula of geopolymers might be expressed as the following (1) [5]: 246…”

Section: Introductionmentioning

confidence: 99%

Waste in the geopolymerization process. Proposal of the use of asbestos and fly ashes in the production of geopolymer concrete

Wójcik¹

2018

ZN PRz Mechanika

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Feasibility Study of Loess Stabilization with Fly Ash–Based Geopolymer

Cited by 97 publications

References 37 publications

Using Alkali-Activated Binders to Improve UAE Dune Sand

Using Alkali-Activated Binders to Improve UAE Dune Sand

Impact of lithium chloride on the performance of wood fiber reinforced polyamide 6/high‐density polyethylene blend composites

Waste in the geopolymerization process. Proposal of the use of asbestos and fly ashes in the production of geopolymer concrete

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