Maximum power consumption comes to building heating, which depends on the efficiency of envelopes. Energy sector covers 50% total energy consumption. Reducing cost it is necessary increase complex elements in envelopes, both their production and operational conditions. The usage plant-based materials such as hemp hurds, has high porosity porous structure, increases reduces cost, relatively emission CO2, because, order perform photosynthesis, plants absorb CO2 release oxygen. This feature...

This paper presents the effect of natural compound (E,E)-1,7-bis(4-Hydroxy-3-methoxyphenyl)-1,6-heptadiene-3,5-dione (curcumin) on antibacterial, anti-aging, mechanical and morphological properties polyurethane (PU) rigid foams. Concentrations 1 wt%, 2 wt% 5 antibacterial was used, infection reduction capacity evaluated for different types bacteria (Escherichia coli (G-) Staphylococcus aureus (G+). In order to determine all assumed synthesized PU foams were characterized by analytical...

Rigid polyurethane foams (RPUFs) were successfully modified with different weight ratios (0.5 wt%, 1.5 wt% and 5 wt%) of APIB-POSS AEAPIB-POSS. The resulting evaluated by their processing parameters, morphology (Scanning Electron Microscopy analysis, SEM), mechanical properties (compressive test, three-point bending test impact strength), viscoelastic behavior (Dynamic Mechanical Analysis, DMA), thermal (Thermogravimetric TGA, conductivity) application (contact angle, water absorption...

Currently, there is great demand to implement circular economy principles and motivate producers of building materials integrate into a closed loop supply chain system improve sustainability their end-product. Therefore, it interest replace conventional raw with inorganic or organic waste-based filler-type additives promote the close chain. This article investigates possibility bottom waste incineration ash (WA) particles be used as flame retardant replacement increase fire safety thermal...

The rational use of wood waste allows the saving forest resources and contributes to reduction greenhouse effect. Three types were used in this work: packaging (W), demolition furniture construction (PLY), door production (DW). work performed an analysis granulometric composition assessed size, shape, particles. particle size was range 0–20 mm, but quantitative proportion particles different sizes nature shape different. All thermochemically treated reduce amount dust soluble increase...

Water-blown biopolyurethane (bioPUR) foams are flammable and emit toxic gases during combustion. Herein, a novel approach suggested by the current study is to use different amounts of lignin waste (LigW), which increases thermal stability delays flame spread sodium silicate (LG), has foaming ability at high temperatures acts as protective layer fire. However, there have been no studies carried out investigate synergy between these two materials. Therefore, ratios, namely 1/1 1/2 LigW/LG,...

Bio-sourced materials combined with a polymer matrix offer an interesting alternative to traditional building materials. To contribute their wider acceptance and application, investigation into the use of wood-polymer composite boards is presented. In this study, biocomposite (BcB) for industry are reported. BcB fabricated using dry incorporation method corn starch (CS) hemp shiv (HS) treatment water at 100 °C. The amount CS size HS fraction evaluated by means compressive bending tensile...

Currently, the recycling potential of wood waste (WW) is still limited, and in a resource efficiency approach, WW insulation materials, such as polyurethane (PUR), appears an appropriate solution. It known that quality main aspect which influences stability final products. Therefore, current study analyses different WW-based fillers possible modifiers for biocomposite foams application loose-fill materials building envelopes. During fillers, it was determined most promising filler scobs (WS)...

The development of new thermal insulation materials needs to evaluate properties and structure raw material, technological factors that make influence on the conductivity material. One most promising for production material is straw. use natural fibres in closely linked ecological building sector, where selection based including recyclable, renewable low resource techniques In current work results research resources insulating are presented. Due high abundance a good its as barley straw,...

Depletion of fossil fuels resources and large amounts pollutants emitted to the atmosphere enforce searching for alternative renewable resources. One these is fibred hemps. The main components obtainable during processing hemp biomass – fibres shives, they are characterised by low density porous structure; thereby, suitable production thermal insulating composites. research based on investigation two types composites produced from shives as well biologically divisible binders. covers impact...

The water absorption of expanded polystyrene boards was studied with the aim developing a procedure for prediction long-term on basis short-term data. specifications EN 12087 test methods determining by total immersion over period 28 days have been discussed and some disagreement between provided 13163 observed. results obtained in specimens EPS density ranging from 12 to 35 kg/m3, which were manufactured various firms foaming raw beads supplied manufacturers, are presented. tests performed...

Natural fibres from flax and hemp are used as raw materials for efficient thermal insulation. In current work, tests were carried out using chopped combed long well fibres. Investigations have shown that conductivity of natural depends on their preparation method (combing, chopping) density.

For the production of traditional building materials, excavated natural resources are used. The process such materials requires high-energy demands, wherefore, high amounts CO2 gases, which have a great impact on climate change, emitted. Only small part is effectively recycled and reused. Generally, they transported to landfills, rapidly expand may pollute soil, groundwater air. Currently, attention paid novel materials. aim use as less possible replace them by renewable resources....

Textile waste is formed in various stages, from the preparation of raw materials to utilisation textile products. One sources production woollen yarns. During yarns, generated during mixing, carding, roving, and spinning processes. This disposed landfills or cogeneration plants. However, there are many examples being recycled new products produced. work deals with acoustic boards made was yarn processes up stage. Due parameters, this not suitable for further use work, composition yarns...