Unsupervised Machine Learning for Risk-Based Integrity Assessment of Underground Steel Pipelines: Bulk Water Distribution Utilities

Authors: Mthunzi Lushozi, Gbeminiyi John Oyewole Abstract: Aging big-diameter underground steel pipelines pose significant sustainability and operational challenges for bulk water distribution utilities. These challenges include, but are not limited to, an increased risk of underground big-diameter pipeline failure and rising costs for asset condition assessments. We developed and tested a unsupervised machine-learning framework to […]

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A Review of Frost-Salt-Mechanical Coupled Deterioration Mechanisms in Vibropressed Concrete for Pavement Applications

Authors: Zhang Kaiyue, Norul Wahida Kamaruzaman Abstract: Freeze-thaw cycling, deicing salt attack, and traffic-induced mechanical loading are major causes of durability loss in concrete pavements in cold and seasonally frozen regions. Vibropressed concrete (VPC), manufactured with low water-to-binder ratios, dry-consistency mixtures, and intensive vibration-compaction, is widely used in paving blocks, kerbs, slabs, and other precast […]

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