The stabilization of urban pavements founded on expansive clay subgrades in Victoria, Australia
Notice bibliographique
Résumé
Expansive clays cover vast areas of the globe including the United States, Canada, South Africa, Middle East, Europe and Australia. Movements in expansive clays are the result of moisture change. The migration of moisture is affected mainly by the suction characteristics of the clay and by the neighbouring tree roots. The clay profile near the surface that is within the depth of seasonal movement experiences cycles of shrinkage and heave that causes pavements to crack and lose their shape Moisture control of expansive soil subgrades for Local Government pavements continues to cause problems that are responsible for maintenance and performance of these pavements. Pavement damage is featured through the presence of longitudinal cracks, loss of shape and rotation of the kerb and channel. The current stabilization techniques are not entirely suitable for either existing or new urban pavements founded on expansive soils. The presence of trees and underground services will always remain the biggest challenge to the practical and economical viability of any method. Therefore, there is a need to seek a new technique of creating a stable moisture regime beneath urban pavements. The use of conventional heating in a road construction process was investigated in the early 1900s. This treatment method was abandoned for many reasons, including the insufficient depth of heat penetration, economics and environmental concerns. The hypothesis of this research is that clay processing using microwave (M/W) heating may provide a solution to expansive subgrades of new and existing pavements due to a number of factors. These include: penetrating radiation, controllable electric field distribution, rapid heating, selective heating of materials through differential absorption, self-limiting reactions, and finally the potential for portability and remote processing. The M/W processing of expansive clays, which is non-intrusive nature, is a completely new approach that is examined by the author. It involves the use of microwaves to change the clay particles to produce a new microstructure that is not capable of rehydration. The research provides an evaluation of the conditions or parameters needed for a successful application of M/W processing. It also identifies its limitations and weaknesses, and finally provides a list of further research work required for a prototype insitu application. The M/W method is shown to be an attractive and favorable possibility for future large-scale insitu applications.
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 | 0,001 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,001 | 0,001 |
| Études des sciences et des technologies | 0,000 | 0,001 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,001 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,001 |
| 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 ».