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Thermal and hygrothermal performance is evaluated for straw-sodium silicate and mycelium-bound composites, supported by Life Cycle Assessment (LCA) for environmental impact. Flax composites reach low thermal conductivity (down to 0.078 W·m⁻¹·K⁻¹) and compressive strengths up to 0.56 MPa, while mycelium samples show 0.045–0.056 W·m⁻¹·K⁻¹.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/sustainable-agricultural-waste-based-bio-composites-for-zero-pollution-construction/501250/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/sustainable-agricultural-waste-based-bio-composites-for-zero-pollution-construction/501250.png","ImageObject",300,407,{"name":92,"@type":93},"hdkawk","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-23","2026-10-03",true,{"@type":102,"interactionType":103,"userInteractionCount":44},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"Which agricultural wastes are studied as raw materials in the dissertation?","Question",{"text":112,"@type":113},"The thesis focuses on wheat, flax, and hemp straw as sustainable feedstocks for bio-based composites.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How are the composites’ performance evaluated?",{"text":117,"@type":113},"Performance is assessed through thermal and hygrothermal property testing and through environmental evaluation using Life Cycle Assessment (LCA).",{"name":119,"@type":110,"acceptedAnswer":120},"What environmental benefits are reported for the proposed materials?",{"text":121,"@type":113},"The results indicate reductions in embodied energy and carbon emissions by up to 40% compared with conventional insulation, and mycelium-based composites show carbon-negative footprints.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},501250,1791181732,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":39,"category_name":40,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":44,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145},3985747859855,"https://ap-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c","SLOVAK UNIVERSITY OF TECHNOLOGY IN BRATISLAVA FACULTY OF CIVIL ENGINEERING  \nMaryna Babenko  \nDissertation Thesis Abstarct  \nThe use of agricultural waste for the production of construction materials with zero  \npollution  \nto obtain the Academic Title of “philosophiae doctor”, abbreviated as “PhD.“in the doctorate degree study programme: Building Technology  \nin the field of study: 5.1.4 Civil Engineering  \nForm of Study: Full-time  \nBratislava 2025  \nDissertation Thesis has been prepared at: Department of Materials Engineering and Physics  \n(Faculty of Civil Engineering,  \nSlovak University of Technology in Bratislava)  \nSubmitter: Maryna Babenko  \nDepartment of Materials Engineering and Physics  \nFaculty of Civil Engineering,  \nSTU in Bratislava Radlinského 11,  \nSK-810 05 Bratislava, Slovakia  \nSupervisor: prof. Ing. Stanislav Unčík, PhD.  \nDepartment of Materials Engineering and Physics  \nFaculty of Civil Engineering,  \nSTU in Bratislava Radlinského 11,  \nSK-810 05 Bratislava, Slovakia  \nDissertation Thesis Abstract was sent:    \nDissertation Thesis Defence will be held on ................at ...............o’clock at Department of Materials Engineering and Physics (Faculty of Civil Engineering, Slovak University of Technology in Bratislava), Radlinského 11, SK-810 05 Bratislava, Slovakia  \nprof. Ing. Stanislav Unčík, PhD. Dean of Faculty of STU  \nAbstract  \nThis dissertation investigates the potential of agricultural waste—specifically wheat, flax, and hemp straw—as a sustainable raw material for the production of bio-based composites aligned with zeropollution construction principles. The study presents a comprehensive evaluation of thermal and hygrothermal properties of both straw-sodium silicate and mycelium-bound composites, alongside their environmental performance through Life Cycle Assessment (LCA) . Flax straw-based composites achieved a thermal conductivity as low as 0.078 W·m⁻¹·K⁻¹, with optimized compressive strength reaching 0.56 MPa at a flax-to-sodium silicate ratio of 1:2.65, and densities ranging from 250 to 345 kg·m⁻³. Mycelium-based insulation samples demonstrated average thermal conductivity between 0.045 and 0.056 W·m⁻¹·K⁻¹, and densities from 107 to 220 kg·m⁻³, depending on the substrate. The highest thermal conductivity-to-weight ratio (TC-WR) was observed in wheat - mycelium composites, measured at 0.148 W⁻¹·kg⁻¹·m⁴ ·K, outperforming other straw-based variants. The materials also showed favorable hygrothermal behavior, with moisture sorption stabilizing within 0.003% to 0.52% under changing humidity conditions. SEM and EDS analyses confirmed the effective integration of sodium silicate on straw fibers, contributing to structural strength and water resistance. Environmental analysis revealed that the proposed materials could reduce embodied energy and carbon emissions by up to 40% compared to conventional insulation (e.g., mineral wool, EPS) . Mycelium-based composites exhibited carbon-negative footprints ranging from −244 to −298 kg CO₂/m³. Additionally, the reuse of regional agricultural residues addresses a pressing waste management issue in the EU, where over 700 million tons of agricultural waste are generated annually. The outcomes demonstrate that straw-based biocomposites are not only technically viable but also economically and environmentally advantageous for building applications, especially in the context of low-energy renovations and sustainable construction.  \nAbstrakt  \nDizertačná práca sa zaoberá využitím poľnohospodárskeho odpadu – konkrétne pšeničnej, ľanovej akonopnej slamy – ako udržateľného surovinového zdroja na výrobu bio-kompozitných materiálov vsúlade s princípmi výstavby bez znečistenia (zero pollution) . Práca poskytuje komplexné hodnotenie mechanických, tepelných a hygrotermálnych vlastností kompozitov viazaných na silikát sodný a hubové mycélium a taktiež ich environmentálnu výkonnosť prostredníctvom analýzy životného cyklu (LCA) . Kompozity na báze ľanovej slamy dosiahli","cbCaivqeaXoGIK2R","https://ap.wps.com/l/cbCaivqeaXoGIK2R","pdf",1906749,26,"English","# Abstract\n## Materials and feedstocks\n## Thermal and hygrothermal properties\n## SEM/EDS characterization\n## Environmental performance (LCA)","[{\"question\":\"Which agricultural wastes are studied as raw materials in the dissertation?\",\"answer\":\"The thesis focuses on wheat, flax, and hemp straw as sustainable feedstocks for bio-based composites.\"},{\"question\":\"How are the composites’ performance evaluated?\",\"answer\":\"Performance is assessed through thermal and hygrothermal property testing and through environmental evaluation using Life Cycle Assessment (LCA).\"},{\"question\":\"What environmental benefits are reported for the proposed materials?\",\"answer\":\"The results indicate reductions in embodied energy and carbon emissions by up to 40% compared with conventional insulation, and mycelium-based composites show carbon-negative footprints.\"}]","Sustainable Agricultural Waste-Based Bio-Composites for Zero-Pollution Construction | PDF",1791018358,66]