And so, as the temperature changes, there's thermal contraction," Steenlage said. Building materials like wood, metal and glass expand when exposed to heat and contract in the cold. Not just ...

Many cracks occur when early-age concrete is subjected to tensile stresses, especially concrete volume changes associated with restrained thermal contraction (cooling) or concrete drying shrinkage.

One of the reasons concrete cracks is due to “thermal cracking” and this relates to the temperature development as concrete hydrates as well as temperature differences within a slab.

The transformation does not involve diffusion processes but lattice displacement of atoms by shear produced by the thermal contraction of the crystal structure during cooling. Martensite does not ...

Bundle up: Wear thermal clothing to prevent muscle contraction from the cold, especially if you're working or playing sports outdoors. Avoid being a couch potato: Take active breaks if you're ...