Characterizing pozzolanic activity of rice husk ash by impedance spectroscopy

Wansom, S.; Janjaturaphan, S.; Sinthupinyo, Sakprayut

doi:10.1016/j.cemconres.2010.08.013

Cited by 45 publications

(18 citation statements)

References 14 publications

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“…In Thailand, the annual production of RHA has been approximated at 1.6 million tons [6]. Several researchers have shown that the main chemical composition of rice husk is silicon dioxide (SiO 2 ), and the highest amount of amorphous silica was achieved when rice husk ash was burned between 500 and 700°C [7,8].…”

Section: Introductionmentioning

confidence: 99%

Assessing the effect of biomass ashes with different finenesses on the compressive strength of blended cement paste

et al. 2012

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Section: Introductionmentioning

confidence: 99%

Assessing the effect of biomass ashes with different finenesses on the compressive strength of blended cement paste

et al. 2012

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“…Likewise, corrosion resistance and durability of concrete markedly enhanced with the addition of RHA, while porosity, heat conductivity, and density slightly decreased . In addition, hydration was accelerated in early stage, which sequentially improved the pozzolanic activity . RHA is essential for the synthesis of industrial materials such as fiber‐cement composite , organic derivatives , TiO 2 /SiO 2 composites , alumina silicate composites , bricks , silica powder , and modified lubricating grease , meanwhile absorbing contaminants in the waste water as absorbent .…”

Section: Introductionmentioning

confidence: 99%

Removal of metal impurities in rice husk and characterization of rice husk ash under simplified acid pretreatment process

Chen

Fang

et al. 2017

Env Prog and Sustain Energy

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Acid pretreatment plays an important role in the preparation of amorphous silica with high activity and high specific surface area before combustion process. However, some limitations and problems exist in the pretreatment process of previous literatures. On the basis of this, this work is aimed at simplifying the acid pretreatment process and combustion condition, which could present a more advantageous process for practical industrial applications. Then the removal percentage and behavior of metal impurities in rice husk is studied by ICP‐OES, and effects of acid pretreatment on properties of rice husk ash (RHA) at various combustion temperatures are comprehensively investigated in comparison with previous results by scanning electron microscope (SEM), X‐ray fluorescence (XRF), X‐ray diffractometer (XRD), and surface analyzer. The results suggest that the removal degree of each metal is various due to each chemical form in rice husk, of which removal percentage of K is especially remarkable. The contributions of simplified acid pretreatment to the properties of RHA are equally prominent: smaller nanoscale particles, higher purity, and specific surface area of above 200 m2/g. In addition, the pretreatment can also eliminate the crystallization and keep the high activity of RHA in combustion temperature range of 600–900°C. © 2017 American Institute of Chemical Engineers Environ Prog, 36: 830–837, 2017

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“…To reduce the impact of the industry, we need to slow the demand for cement. Work has been done on replacing some of the cement with fillers such as plant fibers, fly ash, and rice husk ash, with the added benefit that these fillers are often unwanted byproducts of other industries [20, 21]. Parallel work is also under way on alkali-activated aluminosilicate-based geopolymer as a replacement for cement in construction.…”

Section: Resource Utilizationmentioning

confidence: 99%

Material research for environmental sustainability in Thailand: current trends

Niranatlumpong

Ramangul

Dulyaprapan

et al. 2015

Science and Technology of Advanced Materials

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This article covers recent developments of material research in Thailand with a focus on environmental sustainability. Data on Thailand’s consumption and economic growth are briefly discussed to present a relevant snapshot of its economy. A selection of research work is classified into three topics, namely, (a) resource utilization, (b) material engineering and manufacturing, and (c) life cycle efficiency. Material technologies have been developed and implemented to reduce the consumption of materials, energy, and other valuable resources, thus reducing the burden we place on our ecological system. At the same time, product life cycle study allows us to understand the extent of the environmental impact we impart to our planet.

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Characterizing pozzolanic activity of rice husk ash by impedance spectroscopy

Cited by 45 publications

References 14 publications

Assessing the effect of biomass ashes with different finenesses on the compressive strength of blended cement paste

Assessing the effect of biomass ashes with different finenesses on the compressive strength of blended cement paste

Removal of metal impurities in rice husk and characterization of rice husk ash under simplified acid pretreatment process

Material research for environmental sustainability in Thailand: current trends

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