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Concrete leveling : ウィキペディア英語版 | Concrete leveling
In civil engineering, concrete leveling is a procedure that attempts to correct an uneven concrete surface by altering the foundation that the surface sits upon. It is a cheaper alternative to having replacement concrete poured, and is commonly performed at small businesses and private homes as well as at factories, warehouses, airports and on roads, highways and other infrastructure. ==Causes of Concrete Settlement== Concrete slabs can be susceptible to settlement from a wide variety of factors. In some areas of the United States, naturally occurring soils can consolidate over time, including areas ranging from Texas up through to Wisconsin. Soil erosion also contributes to concrete settlement, as this is very common for locations with improper drainage. Concrete slabs built upon filled-in land can excessively settle as well. This is common for homes with basement levels, as the fill on the outside of the foundation frequently is not "compacted" properly. In some cases, the slabs pitch down, directing water down towards the basement level. Tree roots can actually heave a slab upwards; this is quite common along public roadways, especially within Metropolitan areas. Concrete settlement and uneven concrete surfaces, and uneven footings can also be caused by seismic activity especially in earthquake-prone countries including Japan, New Zealand, Turkey and USA.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Concrete leveling」の詳細全文を読む
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