A spark plug (sometimes, in British English, a sparking plug,[1] and, colloquially, a plug) is a device for delivering electric current from an ignition system to the combustion chamber of a spark-ignition engine to ignite the compressed fuel/air mixture by an electric spark, while containing combustion pressure within the engine.
Top 10 amazing movie makeup transformations. A concrete finisherâs main job is to smooth concrete as soon as itâs been poured to ensure that it dries evenly and to make sure that the project as a whole achieves consistent results when it comes to final texture, thickness, and density.
Concrete, the humble material behind many a building foundation, makes for nearly indestructible kitchen counters and offers artisan-crafted customization in both color and layout. With these bragging rights, concrete rises above much of the countertop competition. Learn more below and see whether concrete counters are right for your kitchen. The basics: Concrete is composed of water, a binder and a filler. 1  The binder, cement, is most commonly Portland cement, but slag cement and fly ash â both industrial waste by-products â are becoming common additions. 2  The filler, an aggregate, can be anything from sand, gravel and stone to crushed glass and beads.