Early and middle stages of multicomponent cement hydration under the effect of geothermal water and increased temperatures

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F23%3APU146973" target="_blank" >RIV/00216305:26310/23:PU146973 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0375650522002772" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0375650522002772</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.geothermics.2022.102632" target="_blank" >10.1016/j.geothermics.2022.102632</a>

Result language

angličtina

Original language name

Early and middle stages of multicomponent cement hydration under the effect of geothermal water and increased temperatures

Original language description

The study of early and middle stages of hydration in the systems composed of Portland cement Class G (PC) - silica fume (SF) - metakaolin (MK) and PC - SF - blast furnace slag (BFS) was performed by Isothermal calorimetry, Thermogravimetric, X-ray diffraction, and Fourier Transform Infrared analyses in the mid-IR region. The influence of composition, temperature (25, 60, and 80 degrees C), and hydration media (water and geothermal solution) was investigated. Geothermal solution delayed main hydration, however, considering the times of the calorimetric maxima at 25 degrees C, it led to the formation of hydration products with more polymerized structures in larger amounts than during the hydration process using water. At higher temperatures, the deceleration effect of the geothermal solution became less evident, nevertheless higher degree of silica polymerization and more hydration products were found in samples that were hydrated in water. Regardless of the hydration temperature, the hydration carried out in geothermal solution became more effective already after 40 h. The effect of fine additives advanced by higher temperatures resulted in accelerated hydration represented by faster depletion of gypsum. The presence of SO4-AFm and CO3-AFm phases was confirmed during the deceleration period of the hydration process using water and geothermal solution, respectively.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10500 - Earth and related environmental sciences

Project

<a href="/en/project/GA19-16646S" target="_blank" >GA19-16646S: The elimination of the negative impact of zinc in Portland cement by accelerating concrete admixtures</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2023

Confidentiality

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

Name of the periodical

GEOTHERMICS

ISSN

0375-6505

e-ISSN

1879-3576

Volume of the periodical

108

Issue of the periodical within the volume

únor

Country of publishing house

GB - UNITED KINGDOM

Number of pages

13

Pages from-to

„“-„“

UT code for WoS article

000899990600004

EID of the result in the Scopus database

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