Effect of siliceous sand volume fraction on the properties of alkali-activated slag mortars

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F23%3APU149798" target="_blank" >RIV/00216305:26310/23:PU149798 - isvavai.cz</a>
Result on the web
<a href="https://iopscience.iop.org/article/10.1088/1742-6596/2568/1/012010" target="_blank" >https://iopscience.iop.org/article/10.1088/1742-6596/2568/1/012010</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1742-6596/2568/1/012010" target="_blank" >10.1088/1742-6596/2568/1/012010</a>

Result language
angličtina
Original language name
Effect of siliceous sand volume fraction on the properties of alkali-activated slag mortars
Original language description
One of the critical factors affecting the performance of alkali-activated slag (AAS) is the nature and dose of alkali activator. The activator type can play a significant role during the transition from pastes to mortars or concretes. Therefore, three basic sodium activators (water glass, carbonate, and hydroxide) of the same molarity of 4M Na+ were used to prepare AAS-based mortars with different volume fractions of siliceous sand. These were compared by means of workability, mechanical strength, and long-term shrinkage under autogenous conditions. The results were compared to those obtained on pastes with similar workability. Increasing the content of the sand tended rather to decrease the mechanical properties, while greatly decreased autogenous shrinkage. Nevertheless, the most remarkable differences for different activators were observed when comparing the mortars with pastes. The transition from pastes to mortars resulted in the highest reduction in both compressive and flexural strength for sodium hydroxide. The flexural strength of the mortars with sodium water glass and sodium carbonate even increased considerably in presence of sand.
Czech name
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Czech description
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Project
<a href="/en/project/GA22-02098S" target="_blank" >GA22-02098S: Experimental analysis of the shrinkage, creep and cracking mechanism of the materials based on the alkali-activated slag</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

Article name in the collection
International Conference Building Materials, Products and Technologies, ICBMPT 2023
ISBN
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ISSN
1742-6588
e-ISSN
1742-6596
Number of pages
7
Pages from-to
1-7
Publisher name
IOP Science
Place of publication
neuveden
Event location
Telč
Event date
May 23, 2023
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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