Effect of cement composition on the early hydration of blended cements with natural zeolite

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F17%3A00311560" target="_blank" >RIV/68407700:21110/17:00311560 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1007/s10973-016-6007-4" target="_blank" >https://link.springer.com/article/10.1007/s10973-016-6007-4</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10973-016-6007-4" target="_blank" >10.1007/s10973-016-6007-4</a>

Result language

angličtina

Original language name

Effect of cement composition on the early hydration of blended cements with natural zeolite

Original language description

This paper studies the addition (0–40% w/w) of natural zeolite (NZ, 84% clinoptilolite) in blended cements made with Portland cement (PC) with low and medium C3A content. The isothermal calorimetry was used to understand the effect of NZ on the early cement hydration. For low C3A cement, the addition of NZ produces mainly a dilution effect and then the heat released curve is similar to plain cement with lower intensity. For medium C3A cement, the curve shows the C3S peak in advance and a high intensity of third peak attributed to C3A hydration. The high cation fixed of NZ reduces the ions concentration (especially alkalis) in the mixing water stimulating the PC hydration. The flowability decreases when the NZ replacement level increases. Results of Fratini’s test show that NZ with both PCs used presents slow pozzolanic activity. At early age, XRD and FTIR analyses confirm that hydration products are the same as that of the corresponding PC and the CH is progressively reduced after 28 days and some AFm phases (hemi- and monocarboaluminate) appear depending on the NZ percentage and the PC used. For low replacement levels, the compressive strength is higher than the corresponding PC from 2 to 28 days. For high replacement levels, the early compressive strength is lower than that of corresponding plain PC and the pozzolanic reaction improves the later compressive strength of blended cements.

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

20101 - Civil engineering

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2017

Confidentiality

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

Name of the periodical

Journal of Thermal Analysis and Calorimetry

ISSN

1388-6150

e-ISSN

1588-2926

Volume of the periodical

128

Issue of the periodical within the volume

2

Country of publishing house

HU - HUNGARY

Number of pages

13

Pages from-to

721-733

UT code for WoS article

000399242400010

EID of the result in the Scopus database

2-s2.0-85001776505