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Publikācija: Impact of Organic Compounds Extracted from Hemp-Origin Aggregates on the Hardening Process and Compressive Strength of Different Types of Mineral Binders

Publication Type Scientific article indexed in SCOPUS or WOS database
Funding for basic activity EU Structural Funds
Defending: ,
Publication language English (en)
Title in original language Impact of Organic Compounds Extracted from Hemp-Origin Aggregates on the Hardening Process and Compressive Strength of Different Types of Mineral Binders
Field of research 2. Engineering and technology
Sub-field of research 2.1. Construction and transportation engineering
Research platform Materials, Processes, and Technologies
Authors Laura Vītola
Māris Šinka
Aleksandrs Korjakins
Diāna Bajāre
Keywords Wood Cement Composites, Sisal, Natural Fibers
Abstract Biocomposite building materials with mineral binders are becoming more topical recently because they can address growing environmental concerns regarding carbon footprints and resource depletion better than traditional building materials. However, these new materials also pose new challenges. There have been issues with the compatibility of plant-origin aggregates (such as hemp-origin aggregates) with commonly used mineral binders due to organic compounds released by these aggregates, and these issues have not yet been extensively studied. Magnesium-based binders are a group of alternative binders that are being used in the production of biocomposites, and although they do not appear to have the same compatibility issues, they too have not yet been widely researched. In this study, the impact of organic compounds released by hemp-origin aggregates on the physical and mechanical properties of binders were tested. The hydration processes of commonly used binders such as cement and lime alongside alternative binders-magnesium cements influenced by released organic compounds were investigated. Organic-compound extracts from hemp-origin aggregates were prepared in a water medium with different pH values. The resulting extracted organic compounds were shown to retard the setting time of hydraulic binders (cement and hydraulic lime) and decrease their compressive strength by more than 50%. Magnesium-cement binders, however, show only slight retardation in setting time and no compressive strength loss. Thus, magnesium-cement binders have demonstrated their superior compatibility with plant-origin aggregates.
DOI: 10.1061/(ASCE)MT.1943-5533.0003461
Hyperlink: https://ascelibrary.org/doi/10.1061/%28ASCE%29MT.1943-5533.0003461 
Reference Vītola, L., Šinka, M., Korjakins, A., Bajāre, D. Impact of Organic Compounds Extracted from Hemp-Origin Aggregates on the Hardening Process and Compressive Strength of Different Types of Mineral Binders. Journal of Materials in Civil Engineering, 2020, Vol. 32, No. 12, Article number 04020386. ISSN 0899-1561. e-ISSN 1943-5533. Available from: doi:10.1061/(ASCE)MT.1943-5533.0003461
Additional information Citation count:
ID 31429