Green reaction-type nucleation seed accelerator prepared from coal fly ash ground in water environment

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27690%2F21%3A10249175" target="_blank" >RIV/61989100:27690/21:10249175 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0950061821025915" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0950061821025915</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.conbuildmat.2021.124840" target="_blank" >10.1016/j.conbuildmat.2021.124840</a>

Result language

angličtina

Original language name

Green reaction-type nucleation seed accelerator prepared from coal fly ash ground in water environment

Original language description

Fly ash is the main waste generated from coal production. The application of fly ash in building materials helps reduce pollution. In the present work, a novel reaction-type nucleation seed accelerator with D50 of 512 nm was prepared from coal fly ash using wet-grinding technology, denoted as WFA seed. The physical and chemical performances of WFA seed and its promotion effect on hydration, strength and microstructure of Portland cement (PC) were studied. With the addition of WFA seed, compressive strength was significantly increased by 50% and 16% at 12 h and 28 days. The hydration heat peak was also clearly increased by WFA seed. The hydration and strength promotion by WFA seed is attributed to the dual function of secondary reaction (which occurs as early as 12 h) and nucleation induction, which is different from the single function of nucleation site effect of some existing nano-materials. Furthermore, the main chain length and Al/Si ratio of C-S-H gel were increased, and the pore structure of cement was refined by the addition of WFA seed.

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

20100 - Civil engineering

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

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

Name of the periodical

Construction and Building Materials

ISSN

0950-0618

e-ISSN

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Volume of the periodical

306

Issue of the periodical within the volume

01.11.2021

Country of publishing house

US - UNITED STATES

Number of pages

13

Pages from-to

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UT code for WoS article

000702903000001

EID of the result in the Scopus database

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