Maturation of loess treated with variable lime admixture: Pore space textural evolution and related phase changes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F12%3A10129936" target="_blank" >RIV/00216208:11310/12:10129936 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.clay.2012.03.008" target="_blank" >http://dx.doi.org/10.1016/j.clay.2012.03.008</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.clay.2012.03.008" target="_blank" >10.1016/j.clay.2012.03.008</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Maturation of loess treated with variable lime admixture: Pore space textural evolution and related phase changes

Popis výsledku v původním jazyce

Changes in the pore space of loess treated with 1%-8% of lime (CaO) and compacted in the laboratory were studied by the mercury intrusion porosimetry (MIP) over a long term period (1-360 days). The measurement of pH value was used to monitor the progressof pozzolanic reaction in curing time. The development of the new mineral phases (calcium silicate hydrates, calcium aluminates hydrates and calcium aluminate carbonate hydrate) in the treated soil was investigated using X-Ray diffraction. The MIP indicated that 2% of CaO was sufficient for long term pozzolanic reaction. The threshold value corresponded to the initial consumption of lime determined from the pH measurements. Although the pH value decreases with curing time, at pH higher than 11.7 the progressing pozzolanic reaction changes the voids of the lime treated soil. Above 2% of CaO the macroporosity kept decreasing due to increasing mesoporosity for 360 curing days due to the new mineral phases. At 2% of CaO the decrease of the

Název v anglickém jazyce

Maturation of loess treated with variable lime admixture: Pore space textural evolution and related phase changes

Popis výsledku anglicky

Changes in the pore space of loess treated with 1%-8% of lime (CaO) and compacted in the laboratory were studied by the mercury intrusion porosimetry (MIP) over a long term period (1-360 days). The measurement of pH value was used to monitor the progressof pozzolanic reaction in curing time. The development of the new mineral phases (calcium silicate hydrates, calcium aluminates hydrates and calcium aluminate carbonate hydrate) in the treated soil was investigated using X-Ray diffraction. The MIP indicated that 2% of CaO was sufficient for long term pozzolanic reaction. The threshold value corresponded to the initial consumption of lime determined from the pH measurements. Although the pH value decreases with curing time, at pH higher than 11.7 the progressing pozzolanic reaction changes the voids of the lime treated soil. Above 2% of CaO the macroporosity kept decreasing due to increasing mesoporosity for 360 curing days due to the new mineral phases. At 2% of CaO the decrease of the

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DB - Geologie a mineralogie

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Applied Clay Science

ISSN

0169-1317

e-ISSN

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Svazek periodika

61

Číslo periodika v rámci svazku

JUNE

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

37-43

Kód UT WoS článku

000304845900006

EID výsledku v databázi Scopus

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