Utilization of high volume cement kiln dust and rice husk ash in the production of sustainable geopolymer

Yaseri, Sajad; Verki, Vajihollah Masoomi; Mahdikhani, Mahdi

doi:10.1016/j.jclepro.2019.05.056

Cited by 88 publications

(41 citation statements)

References 47 publications

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“…In terms of application and use of AAC, a higher setting time is a significant parameter for transporting far distances, storage and a shorter setting time, which is important for quick repairs of damaged surfaces [63]. The current results of IS and FS are in a good agreement with the results of past studies.…”

Section: Setting Timesupporting

confidence: 86%

“…13 that nearly parallel IS and FS for blends AAC3 and AAC7, indicating that slower alkali activation is due to the higher content of calcined LKD (40 Wt.% and 35 Wt.%), which acts here as a key activation agent. Higher amounts of alkaline cations of Ca +2 from LKD in the system is leading to the formation of extra Ca(OH)2 that causes more breaking and dissolving of Si and Al chains that accelerates the alkali-activation reaction, and consequently increases the setting time [63]. However, lower IS and FS were observed in AAC11, as shorter levels of reactions occurred due to the low reactive LKD and, therefore, lower alkali activation.…”

Section: Setting Timementioning

confidence: 98%

“…This dissolution was induced by the formation of extra Ak products at the longer ages. The fact of reducing crystalline quartz phases and the formation of vitreous Ak, led to the development of significant strength after 90 and 180 days of (AAC3) [63]. Additionally, a glassy phase of alumina-silicate gel (C-A-S-H) can be indicated in the 2θ range of 25 o -30 o at age of 28 days, however, due to the semi-amorphous nature, this product disappeared at age of 180 days [69,70].…”

Section: Setting Timementioning

confidence: 99%

See 2 more Smart Citations

Long-term performance of novel high-calcium one-part alkali-activated cement developed from thermally activated lime kiln dust

Kadhim

Sadique

Al-Mufti

et al. 2020

Journal of Building Engineering

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One-part earth alkaline activated dry cementitious mixture was produced using thermally activated lime kiln dust (LKD) waste material as a source of CaO activator and metakaolin and natural pozzolan as a source of aluminasilicate • The proportion of LKD and metakaolin in the ternary blend and thermal activation of LKD not only increased the reactivity but also induced higher degree of alkali-activation.• Significant increase in the rate of strength development after 28 days of curing and continued until 180 days that reached 51 MPa for increased proportion of 950ºC calcined LKD and metakaolin in the blend was revealed.• Considerable changes in mineralogy and amorphicity were evidently accredited to thermal treatment.

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Section: Setting Timesupporting

confidence: 86%

Section: Setting Timementioning

confidence: 98%

Section: Setting Timementioning

confidence: 99%

See 1 more Smart Citation

Long-term performance of novel high-calcium one-part alkali-activated cement developed from thermally activated lime kiln dust

Kadhim

Sadique

Al-Mufti

et al. 2020

Journal of Building Engineering

View full text Add to dashboard Cite

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“…It can be observed that the Si-O-T (T:Si or Al) stretching vibration, centered on the precursor at 1035 cm −1 , shifted to lower frequencies in the geopolymers (1004-994 cm −1 ). This change also indicates that the geopolymerization reaction has taken place due to the activation of the amorphous phase of the SOBE residue with the formation of N-A-S-H aluminosilicate gel, which means the condensation of Si-O tetrahedra as well as SiO 4 and AlO 4 in the geopolymer [40,[68][69][70]. The band shift at lower frequencies may be due to an increase in the content of non-bridging oxygens, as well as to an increase in the amount of tetrahedral aluminum in the gel structure [27,71].…”

Section: Fourier Transform Infrared Spectroscopy (Ftir)mentioning

confidence: 97%

Effect of Activating Solution Modulus on the Synthesis of Sustainable Geopolymer Binders Using Spent Oil Bleaching Earths as Precursor

et al. 2021

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The valorization of spent oil bleaching earths (SOBE) is crucial for the protection of the environment and the reuse of resources. In this research, alkali-activated binders were manufactured at room temperature using SOBE as a precursor by varying the mass ratio between the activating solutions of sodium silicate (Na2SiO3) and 6 M sodium hydroxide (NaOH) (activating solution modulus) (Na2SiO3/NaOH ratio = 1/1; 1/2; 1/3; 1/4) to investigate the influence on the technological properties of the materials. This process intends to evaluate the potential of SOBE, heat-treated at 550 °C (1 h), as a precursor of the reaction (source of aluminosilicates). Samples produced with higher amounts of sodium silicate developed a denser structure, with lower porosity and a higher amount of geopolymer gel. Maximum flexural (8.35 MPa) and compressive (28.4 MPa) strengths of samples cured at room temperature for 28 days were obtained with a Na2SiO3/NaOH mass ratio of 1/1. The study demonstrates that SOBE waste can be used as a precursor in the manufacture of geopolymer binders that show a good compromise between physical, mechanical and thermally insulating characteristics.

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“…As a result of such huge production of rice, millions of tons of rice husk are formed annually, leading to disposal problems. Many attempts have been made to recycle rice husk, such as used as fodder for animals, energy generation for heat, and electricity and biogas by combustion and gasification [ 24 ]. In recent five years, it is found that burning rice husk can produce different by-products such as rice husk ash and carbonized rice husk as sustainable additives to produce cement-based construction materials [ 23 , 25 ].…”

Section: Biomass Wastes For Functional Materials Synthesismentioning

confidence: 99%

Recent progress in the conversion of biomass wastes into functional materials for value-added applications

Zhou

Wang

2020

Science and Technology of Advanced Materials

124

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The amount of biomass wastes is rapidly increasing, which leads to numerous disposal problems and governance issues. Thus, the recycling and reuse of biomass wastes into value-added applications have attracted more and more attention. This paper reviews the research on biomass waste utilization and biomass wastes derived functional materials in last five years. The recent research interests mainly focus on the following three aspects: (1) extraction of natural polymers from biomass wastes, (2) reuse of biomass wastes, and (3) preparation of carbon-based materials as novel adsorbents, catalyst carriers, electrode materials, and functional composites. Various biomass wastes have been collected from agricultural and forestry wastes, animal wastes, industrial wastes and municipal solid wastes as raw materials with low cost; however, future studies are required to evaluate the quality and safety of biomass wastes derived products and develop highly feasible and cost-effective methods for the conversion of biomass wastes to enable the industrial scale production.

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Utilization of high volume cement kiln dust and rice husk ash in the production of sustainable geopolymer

Cited by 88 publications

References 47 publications

Long-term performance of novel high-calcium one-part alkali-activated cement developed from thermally activated lime kiln dust

Long-term performance of novel high-calcium one-part alkali-activated cement developed from thermally activated lime kiln dust

Effect of Activating Solution Modulus on the Synthesis of Sustainable Geopolymer Binders Using Spent Oil Bleaching Earths as Precursor

Recent progress in the conversion of biomass wastes into functional materials for value-added applications

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