![](http://www.alamy.com/thumbs/6/E16DFBED-DDDD-4A86-985F-5D888F0C51A8/2JCM37K.jpg)
Thermal differences of heat in boundary of patio slabs become evident as fresh snow fall melts on the perimeter, or concentration of chemicals
Size: 7360px × 4912px
Location: Sevenoaks, Kent, England, UK
Photo credit: © Yon Marsh / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: black, boundary, chemicals, clint, coating, concentration, concrete, conduction, contraction, damage, erosion, evidence, expansion, gaps, gradient, grike, grikes, heat, ice, layer, map, melt, melting, mush, outline, patio, paver, pavers, perimeter, radiation, risk, salt, shallow, slab, slabs, slip, slipping, slush, snow, snowfall, squares, sweeps, thermal, thin, water, weather, white