Pozzolanic reactions of common natural zeolites with lime and parameters affecting their reactivity

Mertens, Gilles; Snellings, Ruben; Balen, Koen Van; Biçer-Şimşir, Beril; Verlooy, Pieter; Elsen, Jan

doi:10.1016/j.cemconres.2008.11.008

Cited by 182 publications

(108 citation statements)

References 31 publications

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“…However, it is interestingly found that by having low percentage of zeolite replacement (2.4%) on low organic content types of organic soil (Type A soil) at 56 days of curing had shown highest strength gain even though with the lowest volume ratio of 0.195. Previous studies [6,171 suggested that the pozzolanic reaction at longer ages can be governed by silica and alumina active contents. Natural zeolite, even though crystalline, can act as pozzolanic materials because of its active contents [I 8, 191.…”

Section: Resultsmentioning

confidence: 99%

“…The reactivity of the natural zeolite as pozzolans is influenced by its grain sizes, in which the finer of the material shows higher short term pozzolanic activity. However, the influence can be less significant after 1 day [6].…”

Section: Introductionmentioning

confidence: 99%

“…Table 1 and Table 2, the hydrated lime utilized in this study is of high quality with high contents of CaO and high pH when tested for its suitability use. Whereas, the zeolite utilized with high SiIAl ratio were expected to have lower exponential reaction, thus reacted faster [6].…”

Section: Materials and Experimental Programmementioning

confidence: 99%

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Stabilization of Artificial Organic Soil at Room Temperature Using Blended Lime Zeolite

Ling

Kassim

Karim

et al. 2013

AMR

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Abstract. Organic content in soil is believed to inhibit formation of reaction products in lime stabilization which resulted in low gain of strength when dealing with organic soils. Zeolite, a kind of pozzolan with high CEC capacity is proposed to be use in this study in order to improve lime stabilization of organic soil. The effectiveness of blended lime zeolite in stabilization of organic soils was investigated by using two types of artificial organic soils with predetermined organic contents. Artificial organic soils were formed by mixing inorganic soil (commercial kaolin) with organic matter (commercial humic acid) at specific ratio. Initial consumption of lime for organic soils was determined in order to determine the minimum percentage of stabilizer required for each soil. Potential influencing factors that might affect the strength such as organic contents, contents of stabilizer, and curing periods were studied. The findings of the study showed that high organic contents and low lime contents resulted in lower gain of strength. However, it is found that slight replacement of lime with zeolite works well with low organic soil at long curing period which resulted in highest strength among all the mixes. Overall, longer curing periods will increase the strength of the soil in the order of 56 days > 28 days > 7 days. Nevertheless, the percentage of strength increment over curing periods is linear with the lime contents, which proved that lime is required for pozzolanic reaction.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Stabilization of Artificial Organic Soil at Room Temperature Using Blended Lime Zeolite

Ling

Kassim

Karim

et al. 2013

AMR

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“…Oni mogu da utiču na stepen hidratacije, nivo polimerizacije kao i na morfologiju C-S-H faze [8]. Na primer, jon Na + brže se otpušta u porni rastvor i tako se povećava njegova pH vrednost.…”

Section: Introductionunclassified

“…They may influence the rate of hydration, the degree of polimerization as well as morphology of C-S-H phase [8]. For instance Na + ion is faster released into the pore solution and therefore increases pH value.…”

Section: Introductionmentioning

confidence: 99%

Hydration process and compressive strength of cement pastes containing natural zeolite

Radeka¹,

Milović²,

Malešev³

et al. 2016

Gra mat konstru

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Zeolite as a raw material to the AAC production

Grabowska¹

2018

ce papers

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Natural zeolites have a long history as a precious raw material in various fields-in catalysis, environmental protection (as sorbents), in agriculture (in fertilizers), as well as in everyday life (as ingredients of detergents). In the last two decades, the possibility of using them in the building material technology began to be taken into account. The paper considers several ways of application of natural clinoptillolite in the autoclaved aerated concrete (AAC) production. Investigations concern the possibility of zeolite dosing as a cement substitute, part of the binder (raw material in the form of a mixture with blast furnace slag), additive to a sand slurry, and a partial substitute of gypsum (used in the AAC recipe). The testing program includes thermal analysis (TG/DTA), phase composition (X-ray powder diffraction), microscopic observation (scanning electron microscope/energy dispersive X-ray spectroscopy), and strength properties of samples autoclaved under existing industrial conditions. The results summary complements the benefits of using zeolite in AAC technology. K E Y W O R D Sautoclaved aerated concrete, hydration products, natural zeolite

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Pozzolanic reactions of common natural zeolites with lime and parameters affecting their reactivity

Cited by 182 publications

References 31 publications

Stabilization of Artificial Organic Soil at Room Temperature Using Blended Lime Zeolite

Stabilization of Artificial Organic Soil at Room Temperature Using Blended Lime Zeolite

Hydration process and compressive strength of cement pastes containing natural zeolite

Zeolite as a raw material to the AAC production

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