Hydration and thermal properties of alkaline hybrid cements based on waste clay and solid alkaline activators

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26232511%3A_____%2F25%3AN0000001" target="_blank" >RIV/26232511:_____/25:N0000001 - isvavai.cz</a>

Alternative codes found

RIV/00216305:26310/26:0201285 RIV/00216224:14310/25:00141237

Result on the web

<a href="https://link.springer.com/article/10.1007/s10973-024-13944-5" target="_blank" >https://link.springer.com/article/10.1007/s10973-024-13944-5</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10973-024-13944-5" target="_blank" >10.1007/s10973-024-13944-5</a>

Result language

angličtina

Original language name

Hydration and thermal properties of alkaline hybrid cements based on waste clay and solid alkaline activators

Original language description

The cement industry is actively pursuing sustainable alternatives to reduce CO2 emissions and combat climate change. This study focuses on replacing Portland cement (PC) with rotary kiln flue dust (RFD), a byproduct of metakaolin production. The research investigates the viability of using moderately alkaline activators, including Na2SO4, Na2CO3, K2SO4, and K2CO3, to achieve alkali activation without the need for high-temperature calcination, which consumes a lot of energy. The experimental mixtures, comprising 75% RFD, 20% PC, and 5% alkaline activator, exhibit promising results in terms of compressive and flexural strengths. Na2SO4 enhances the mechanical properties of the binder. Synergic effect of alkaline activator and PC accelerate reaction original raw material, leading to the formation of ettringite. Conversely, carbonate activators extend the setting time and delay reactions, impacting the early age properties of the binder. The study also explores the thermal stability of the binders, demonstrating a notable impact of alkaline activators on the expansion and contraction behaviors during heating. The findings contribute with valuable insights into the design and optimization of eco-friendly alkali-activated binders, addressing the need for sustainable construction materials with enhanced performance and durability. This research represents a significant step toward developing environmentally preferable cementitious materials, paving the way for the construction industry to adopt more sustainable practices and reduce its ecological footprint.

Czech name

—

Czech description

—

Type

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

CEP classification

—

OECD FORD branch

20100 - Civil engineering

Project

<a href="/en/project/GA23-05082S" target="_blank" >GA23-05082S: The research on the combined effect of sulfur, copper and lithium oxides on the formation and properties of Portland cement clinker.</a><br>

Continuities

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

Publication year

2025

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

—

Issue of the periodical within the volume

JAN 2025

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

13

Pages from-to

—

UT code for WoS article

001389306100001

EID of the result in the Scopus database

2-s2.0-85214087778