Development of a New Product Using Fibres from Recycled Tires
Notice bibliographique
Résumé
Reliable Tire Recycling (RTR) tasked Team 2 to develop a recycling method for a synthetic fibre by-product produced by their tire recycling process. This by-product is made from a heterogenous mixture of short fibres such as polyester and nylon and contains significant amounts of impurities like dirt and crumb rubber. RTR expressed interest in using the by-product to create a new parking curb that would supersede their current model. They requested that the new design be light enough for a single person to carry, be able to withstand all-year Winnipeg weather, and can hold up during interactions with vehicles (i.e., collisions, rollovers, etc.). Team 2 proposed a new parking curb that incorporates the fibre by-product into RTR’s existing rubber mixture, paired with a redesigned form that meets the specified design objectives. The redesign includes underside cavities as well as reduced length for weight and material reduction. The proposed curb would be composed of 22% fibre by-product by mass, which was mixed directly into the rest of the ingredients (70% crumb rubber, 7.5% hydraulic binder, 0.5% water) to create test specimens for material evaluation. The mixture was formed by compressing it with 1700 psi of pressure and baking it at 100 °C. Other compositions were tested as well, including a control composition, 5% fibre by-product, 12% fibre by-product, RTR’s existing curb and two existing market options. The density of each test specimen was calculated first, and that density was used to determine the weight a proposed curb would be if it was made using each composition. All compositions containing fibre would result in a curb weight under the 35 lb design objective. The test specimens were evaluated by uniaxially compressing them according to ASTM standards. This test showed that the addition of fibre by-product, as well as applying higher pressure in the material creation process made the material deform less under load. All specimens containing fibre deformed less than 50% under the design load of 100 psi, passing the design objective. All specimens were then subjected to thermal testing, where they were exposed to extreme hot and cold temperatures (+75 °C and -80 °C respectively). After exposure, each was inspected for deformation and then hit with a metal rod at 21.7 km/hr to evaluate how it responded to impact force. All specimens passed, as none degraded noticeably post temperature exposure and all withstood the impact. A digital curb was then constructed using the 22% fibre by-product mixture, which was then subjected to 100 psi of pressure on the top face. The digital curb deformed a maximum of 8%, passing the deformation design objective. After analyzing the test results Team 2 recommended that RTR make several changes to their current mode of production. It was recommended that RTR increase the pressure used to manufacture curbs and begin introducing the fibre by-product into their curb mixture, starting with 22% replacement of crumb rubber for increased strength and reduced waste to landfill. It was also recommended that RTR adopt a curb design similar to the one proposed by Team 2 for weight, material, and cost savings.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,001 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,001 | 0,001 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».