Hydrogen Bonds Turn Concrete’s Weakest Layer Into a Vibration-Killing Shield
Molecular dynamics simulations reveal that hydroxyl-rich polymers like PVA strengthen cement's weakest interlayer through hydrogen bonding, boosting damping capacity by ...
Tag: energy dissipation
Eggshells, an Unlikely Muse, Could Shield Spacecraft From Debris
Researchers at Dalian University of Technology have shown that arrays of water-filled aluminum eggshells sandwiched between plates can cut projectile ...
Latticed Steel Joints Give Prefabricated Buildings a Major Seismic Boost
A novel latticed steel-concrete composite beam-column joint for prefabricated frames carried over 40 percent higher peak loads and dissipated more ...
Bubbles Reshape the Hydraulic Jump: CFD Reveals a Threshold Where Air Transforms Dam Spillway Flows
High-resolution CFD simulations show that upstream flow aeration leaves hydraulic jump energy dissipation nearly unchanged but triggers threshold effects above ...
Glass Fibers Turn Brittle Tunnel Liners Into Energy-Absorbing Shields
A multi-scale study shows that adding 1 percent chopped glass fibers to cementitious thin spray-on liners more than doubles toughness ...
Lightweight Infill Walls Reshape How Concrete Frames Survive Earthquakes
New laboratory tests reveal that lightweight ceramsite aerated concrete block infill walls dramatically alter the stiffness, ductility, and failure modes ...
Deep Mines Run Hot: Why 40°C Makes Coal Waste Concrete Stronger, Then Weaker
New experiments on gangue cemented backfill reveal that curing temperature boosts strength up to a critical threshold of 40 degrees ...
Burnt Clay Bricks Beat Greener Blocks on Strength but Fail More Brittle in Quake Tests
New experiments in Bangladesh show that burnt clay brick infills give reinforced concrete frames the highest lateral strength but brittle ...
Semi-Active Damper With Negative Stiffness Tames Earthquake Shaking Without Adding Peak Forces
Researchers in China have built and tested a semi-active friction damper that dissipates seismic energy only during unloading, extending structural ...
New Ductile Connections Keep Hollow Core Slabs Standing When Earthquakes Strike
Researchers at Anna University have developed two novel ductile slab-to-beam connection details that kept hollow core floor slabs supported at ...
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Mothers who receive childcare support from maternal grandparents show more parental warmth, finds NTU Singapore study
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University of Seville Breaks 120-Year-Old Mystery, Revises a Key Einstein Concept
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Bee body mass, pathogens and local climate influence heat tolerance
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Researchers record first-ever images and data of a shark experiencing a boat strike
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Groundbreaking Clinical Trial Reveals Lubiprostone Enhances Kidney Function
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