Expanded Glass for Thermal and Acoustic Insulation from Recycled Post-Consumer Glass and Textile Industry Process Waste

Abstract

The production of glass foams obtained by recycling post-consumer glass and textile industry processing waste is presented. The mechanical, thermal and acoustic properties were characterized as a function of process temperature and time. The results showed that it is possible to produce glass foams with thermal and acoustic insulation properties from a mixture consisting of 96.5% of glass waste, 1% of textile waste and 2.5% of manganese dioxide, processed at temperatures between 800 and 900 °C for a time between 30 and 90 min. The samples had density in the range of 200–300 kg m−3, porosity of 87–92%, thermal conductivity of 85–105 mW m−1 K−1, noise-reducing factors of 0.15–0.40 and compressive strength of 1.2–3.0 MPa. Although their insulation performance was not as outstanding as that of polymer foams, these materials can emerge as competitive candidates for applications requiring non-flammability and high-temperature load bearing capacity in combination with low weight, mechanical strength, and thermal and acoustic insulation properties. The use of secondary raw materials (which accounted for 97.5% by weight of the synthetic blend) limits the energy required compared to that needed for the extraction, transportation and processing of primary raw materials, making these foams attractive also in terms of environmental footprint.

Scleroglucan-Based Foam Incorporating Recycled Rigid Polyurethane Waste for Novel Insulation Material Production

“…In light of increased awareness of environmental and health issues, there is growing research interest in alternative materials. These materials aim to utilize secondary, renewable or recycled sources to meet sustainability and ecological requirements [5,7,9,10]. Rigid polyurethane (PU) foams are widely used as insulation materials in buildings, refrigeration and appliances [11].…”

Ensuring the Energy Efficiency of Buildings through the Simulation of Structural, Organizational, and Technological Solutions for Facade Insulation

“…A strategy for wood chip reuse through the fabrication of bio-based building insulation foam was proposed [12]. The results of the research [13] show that it is possible to produce glass foams with thermal and acoustic insulation properties from a mixture consisting of 96.5% glass waste, 1% textile waste, and 2.5% manganese dioxide, processed at temperatures between 800 and 900 • C for a time between 30 and 90 min. In the study in [14], a twofactor experiment was conducted to investigate the influence of accelerator dosage and fiber dosage on the strength, frost resistance, wear resistance, and shrinkage of repaired steel-fiber-reinforced concrete for rigid road surfaces.…”

“…It is known [13,14,20] that external thermal insulation composite systems finished with plaster with glued and mechanically fastened insulation are most often used in the mass construction of buildings with various structural schemes. This choice of facade insulation technology is due to one of the main reasons for its use-lower price compared with ventilated facades.…”

Formation of Cellular Concrete Structures Based on Waste Glass and Liquid Glass

“…A promising direction for the use of cullet is the production of porous heat-insulating materials and foamed concrete [24][25][26][27]. Heat insulators [28] based on foamed polyurethane, polypropylene, polystyrene, etc., are combustible [29,30], and their use for the construction of residential buildings and technological structures carries certain risks in terms of fire and chemical hazards.…”