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Concrete creep is essentially the sagging of concrete over time. Creep and shrinkage of concrete are two physical properties of concrete.The creep of concrete, which originates from the calcium silicate hydrates (C-S-H) in the hardened Portland cement paste (which is the binder of mineral aggregates), is fundamentally different from the creep of metals and polymers.
After sufficient setting and hardening of concrete (after 28 days), the progressive loss of capillary water is also responsible for the "drying shrinkage". It is a continuous and long-term process occurring later during the concrete life when under dry conditions the larger pores of concrete are no longer completely saturated by water. Thermal ...
Many cars have a feature called "courtesy power on" which allows the windows to remain operational for a brief period after the key is taken out of the ignition, so that adjustments can be made without putting the key back in. Additionally, some vehicles offer the option to operate the windows from outside the car using a remote. [12]
Romans also made use of glass in construction with colored glass in mosaics and clear glass for windows. Glass came to be fairly commonly used in windows of public buildings. [ 2 ] Central heating in the form of a hypocaust , a raised floor heated by the exhaust of a wood or coal fire.
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Repointing is also called pointing, [1] or pointing up, although these terms more properly refer to the finishing step in new construction. Tuckpointing is also commonly used as a synonym , though its formal definition is technically different.
While most internal combustion engines don't require time to warm up — even though many people like to hop into a warm vehicle — EV owners may need to take some action before getting on the road.
Back-up collision with a lamppost. Back-up collisions happen when a driver reverses the car into an object, person, or other car. Although most cars come equipped with rear view mirrors which are adequate for detecting vehicles behind a car, they are inadequate on many vehicles for detecting small children or objects close to the ground, which fall in the car's blind spot, particularly ...