More than 40% of traffic deaths in China happen after dark. The single biggest lever on whether a line is visible at night is not the paint — it is the glass beads inside and on top of it. Here is the mechanism, the numbers, and what the standards actually require.
Glass beads as fillers in coatings and composites: what actually matters in the spec – RI, coating compatibility, particle size distribution and loading levels.
High-index (RI 1.7+) vs standard (RI 1.5) glass beads: when wet-night retroreflectivity justifies the higher cost, and how to spec both grades correctly.
Seven mistakes that ruin a glass bead blast finish – wrong pressure, contaminated media, bad nozzle angle and more. Fixes that protect the surface and the workpiece.
Glass bead mesh to micron conversion chart for road marking, blasting and grinding. Includes gradation tables, common sieve sizes and how to read a spec sheet.
AASHTO M247, EN 1423 or BS 6088 – which glass bead standard applies to your road marking project? A practical comparison of scope, gradation and RI requirements.
Drop-on or premix glass beads for road marking? Compare retroreflectivity, cost per kg and application method, then spec the right grade for your market.
Glass beads can be made from fresh batch or recycled cullet. The two look alike in a bag. Whether they perform alike is a longer story.
A sieve report looks like a boring table of numbers until you learn to read it as a story about how the batch will behave. A quick field guide.
Sieve size gets all the attention, but roundness decides whether the bead actually reflects. A look at the test nobody talks about enough.
