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Hemp Resources Toolkit
The GAIA Guild Hemp Resources Toolkit is a curated library of global knowledge on hempcrete, hemp-lime composites, and hemp-based materials. This master document brings together research studies, technical codes, life-cycle assessments, and practical case studies, all organized by category. It is designed as a one-stop reference for builders, architects, researchers, and advocates working to advance sustainable hemp construction.

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Table of contents
  • 📖 Standards & Codes
📖 Standards & Codes
  • International Residential Code 2024 – Appendix BL Hemp-Lime Construction 🔗 codes.iccsafe.org
This foundational code provides the regulatory framework for hemp-lime construction in residential applications, establishing safety standards and construction guidelines for builders and inspectors.
🌍 Life-Cycle Assessment
  • A holistic sustainability overview of hemp as building & transport material (2024) 🔗 ScienceDirect
  • Environmental LCA of hemp-based building materials in Western Australia (2023) 🔗 MDPI
  • Environmental LCA of hemp-based thermal insulation (USA) (2025) 🔗 ResearchGate
  • Life-cycle energy & carbon analysis of hemp-lime biocomposites (2017) 🔗 ResearchGate
🔥 Fire Resistance & Safety
  • Hempcrete passes ASTM E119 one-hour fire test (Intertek full-scale) (2024) 🔗 HempBuildMag
  • Ereasy hemp-lime one-hour ASTM E119 rating (2024) 🔗 Hemp Gazette
  • Canadian ASTM E119/CAN-ULC S101 fire test recap (2015) 🔗 New Society
  • Hempcrete with mineral additives: flammability & fire resistance (2025) 🔗 PMC
  • Hemp concrete with mineral additives: flammability & fire resistance (2025) 🔗 MDPI
💧 Hygrothermal & Moisture Regulation
  • Characterization of Hemp-Lime Bio-Composite (2019) 🔗 IOPScience
  • Thermo-hygrometric behavior of hempcrete walls in the Mediterranean (2019) 🔗 IOPScience
  • Experimental highlight of hygrothermal phenomena in hemp concrete wall (2015) 🔗 CORE
  • Effect of Temperature-dependent Sorption on Hemp Concrete (2015) 🔗 ScienceDirect
  • Influence of Water Absorption on Hemp Hurds Composites (2014) 🔗 ResearchGate
  • Experimental & numerical evaluation of hemp-lime building hygrothermal performance (2019) 🔗 HAL
  • Monitoring the hygrothermal performance of a hemp-lime building (2015) 🔗 ResearchGate
  • Mechanical, thermal & moisture buffering of hemp-lime composites (2020) 🔗 PMC
  • Effect of compaction & airflow on moisture buffering (2023) 🔗 PMC
  • Hygrothermal behaviour of hemp-lime walls vs maturation/carbonation (2023) 🔗 ScienceDirect
  • Long-term monitoring of lime-hemp wall insulation (2023) 🔗 ScienceOpen
  • DOE/NREL review of hemp concrete moisture buffering (2024) 🔗 OSTI.gov
  • Microstructure & moisture properties of hemp/flax shives (2024) 🔗 Taylor & Francis
  • The Measurement of Hemp Concrete Thermal & Moisture Properties (2025) 🔗 MDPI
🌡️ Thermal & Energy Performance
  • Hygrothermal & mechanical characterization of novel hemp-lime composites (2024) 🔗 USHBA PDF
  • Thermal Properties of Hempcrete, a Case Study (2018) 🔗 Theseus.fi
  • Thermal & Indoor Environmental Quality – PA Hemp House (2022) 🔗 PHRC PSU
  • Thermal conductivity of hemp concretes: variation with formulation (2014) 🔗 HAL
  • Moisture fixation & thermal properties of lime-hemp concrete (2013) 🔗 ResearchGate
  • Dynamical interactions between heat & mass flows in lime-hemp concrete (2006) 🔗 UCLouvain
  • Thermal performance of real-life in-situ cast lime hemp walls in Flanders (2020) 🔗 IOPScience
  • Occurrence of thermal bridges in hemp-lime construction junctions (2019) 🔗 BME Journal
  • Thermal performance evaluation of hempcrete masonry walls (2024) 🔗 ScienceDirect
  • Optimizing hempcrete via thermal pre-treatment of hurds (2024) 🔗 MDPI
  • Effects of 3D distribution/orientation of hemp shivs (2025) 🔗 ScienceDirect
🏗️ Durability
  • Physical properties, water sensitivity & long-term durability (2020) 🔗 QUB
  • Effect of long-term weathering on hemp & rapeseed concrete (2020) 🔗 QUB Pure
  • Durability & hygrothermal performance of metakaolin-based hemp shiv geopolymers (2025) 🔗 ScienceDirect
  • Durability, recyclability & LCA of green insulating composites (2025) 🔗 ScienceDirect
🧱 Structural
  • Study on strength & microstructure of hempcrete (2019) 🔗 AIP
  • Study of Lime Hemp Concrete (LHC): Mix design, casting process & mechanical behavior (2016) 🔗 Google Drive
  • Mechanical & thermal properties of hemp-lime composites (2015) 🔗 Kompozyty Journal
  • Effect of compaction on mechanical & thermal properties of hemp concrete (2010) 🔗 ResearchGate
  • Low density hemp-lime composites under compression loading (2010) 🔗 Claisse Info
  • Composite made with hemp hurds & different binders (2013) 🔗 ScienceDirect
  • Hemp concretes mechanical properties using shives & fibers (2008) 🔗 Epsilon SLU
  • Characterisation of hemp-lime composite as a building material (2013) 🔗 University of Bath
  • Overview on bio-based building material with plant aggregate (2016) 🔗 RILEM Letters
  • Utilization of hemp concrete as building material (2012) 🔗 ResearchGate
  • Thermal-insulating wall material based on hemp shives & lime binder (2019) 🔗 AIP
⚗️ Geopolymers
  • Hemp fiber reinforced one-part alkali-activated composites (2023) 🔗 ScienceDirect
  • Impact of hemp shiv content & binder type in geopolymer composites (2025) 🔗 ScienceDirect
  • Optimizing fiber type & content in geopolymer–oil composites (2025) 🔗 ScienceDirect
  • Fibre hornification improves long-term properties of fibre-reinforced geopolymers (2024) 🔗 ScienceDirect
🧵 Hemp Fiber Polymers
  • Polymer structural composites reinforced with hemp (2025) 🔗 MDPI
  • Environmental feasibility of hemp-fiber composites (2025) 🔗 MDPI
  • Characterisation of hemp-fibre reinforced polymer composites (2022) 🔗 MDPI
  • Hemp for new staple fibre yarns for composites (2022) 🔗 Frontiers
  • Hemp-reinforced NAO brake material (2024) 🔗 Frontiers
  • Enhancing mechanical properties of hemp & sisal composites (2025) 🔗 MDPI
  • Cellulose extraction from hemp fiber (2025) 🔗 Springer
🧪 Materials & Mix Design
  • Performance improvement using hemp shiv in cementitious composites (2023) 🔗 ScienceDirect
  • Case study of hempcrete & prefabricated walls (2025) 🔗 MDPI
  • Lignocellulosic industrial waste as hemp substitute (2025) 🔗 MDPI
  • Hemp fibers for biodegradable biocomposites (2024) 🔗 ScienceDirect
  • Measurement of hemp concrete thermal & moisture properties (Slovakia, 2025) 🔗 ResearchGate
🔊 Acoustics
  • Acoustic, thermal & mechanical properties of hemp-clay building materials (2018) 🔗 ResearchGate
This research explores the multi-functional properties of hemp-clay composites, demonstrating their effectiveness in sound absorption and noise reduction applications in building construction.
⚡ Energy Consumption
  • Effectiveness of hempcrete as infill insulation in the Prairies (2014) 🔗 Google Drive
  • Energy performance in Swedish timber buildings renovated with hemp-lime (2019) 🔗 MDPI
These studies demonstrate the significant energy savings achievable through hemp-based insulation systems, particularly in cold climate applications and building renovation projects.
🌱 Environmental Impact
  • Hempcrete as a sustainable building material (Updike) 🔗 Google Drive
  • Hempcrete – An environmentally friendly material? (2014) 🔗 ResearchGate
  • Hempcrete from cradle to grave: role of carbonation in sustainability (2016) 🔗 Polimi
  • Industrial hemp in carbon farming (Vosper) 🔗 Google Drive
📊 Field Studies & Case Monitoring
  • Thermal & hygroscopic study of hemp concrete in ambient conditions (2021) 🔗 ResearchGate
  • Thermal performance of hempcrete infill-wall (Nepal, 2025) 🔗 ResearchGate
These field studies provide real-world performance data from hemp buildings in different climatic conditions, offering valuable insights for practitioners and researchers working with hemp construction materials.
🌀 Circular & 3D Printing
  • Circular honeycomb made by hemp/epoxy (2025) 🔗 Springer
  • Hemp processing waste for 3D printing biocomposites (2025) 🔗 Springer
These cutting-edge studies explore the integration of hemp materials with advanced manufacturing technologies, demonstrating the potential for circular economy applications and innovative construction methods.
🌬️ Air Quality
  • Indoor air quality & overheating in low-carbon housing, UK (2014) 🔗 Taylor & Francis
This comprehensive study examines how hemp-based construction materials contribute to improved indoor air quality and thermal comfort in low-carbon housing applications, providing evidence for health and wellness benefits.
🏭 Manufacturing
  • Green chemistry approach to pulping hemp for construction fiber (2020) 🔗 EPA
  • Manufacturing of building blocks using hempcrete (2016) 🔗 IJLRET
  • Enhancement of lime-hemp concrete properties with manufacturing tech (2015) 🔗 AJCE Journal
These manufacturing studies focus on optimizing production processes for hemp-based building materials, exploring sustainable processing methods and quality enhancement techniques.
📚 Reviews & Overviews
  • Natural fiber-reinforced composites in engineering (2025) 🔗 Springer
  • Applications of hemp polymers in food, textile & packaging (2022) 🔗 MDPI
  • Environmental impact assessment of hemp cultivation & applications (2024) 🔗 Frontiers
These comprehensive review articles provide broad overviews of hemp material applications, synthesizing current knowledge and identifying future research directions across multiple disciplines.
📰 Journals & Collections
These specialized journals serve as primary sources for the latest research developments in natural fiber applications, including hemp-based materials and construction technologies. They provide ongoing access to cutting-edge research and industry developments.

Stay Updated: The GAIA Guild Hemp Resources Toolkit is continuously updated with new research and developments. Bookmark these journal collections to stay current with the latest advances in hemp construction materials.
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